Cabinet of Ministers Regulations No. 118 in Riga on 12 March 2002 (pr. No 11, 40) rules on surface and ground water quality, Issued in accordance with the law "on pollution" in article 12, the second subparagraph and the law "on environmental protection" 18. the second paragraph of article i. General questions 1. provisions lay down quality standards in surface and ground waters.
2. measures taken in implementation of those rules, may not directly or indirectly increase the water, air or soil pollution.
3. If water or watercourses or in these rules are covered in other legislation certainly different water quality regulations, the quality standards which establish more stringent requirements.
 
 
II. Water quality standards for surface water 4. Water quality regulations, which defines the particular hazardous substances (annex 1) and dangerous substances (annex 2) thresholds in water, apply to all surface waters, including waters, fish for priority water and used for the abstraction of drinking water in the surface waters.
5. The application of this provision in annex 1 and 2 in certain water quality regulations, take into account the foreseeable use of the affected area, as well as the need to prevent pollution of water by that rule 1. substances listed in the annex and to reduce water pollution by these regulations 2. substances listed in the annex.
6. The protection of the environment and regional development Ministry at least every four years, this provision is evaluated the information contained in annex 2 and, if necessary, on the basis of it: data on chemical 6.1 substances or groups of substances hazardous for the aquatic environment and human health;
6.2. chemical risk assessment results;
6.3. the chemicals produced and imported, the quantities used, usage or storage conditions;
6.4. natural and legal persons based on the submitted proposals and expert opinion.
7. the provisions of this annex 2. evaluation of information protection of the environment and regional development Ministry informs the public, environmental protection and public health institutions, as well as other relevant institutions.
 
 
III. Water quality regulations for priority fish waters 8. Environmental protection and regional development, the Ministry determines the priority of the water — fresh fish, which requires the protection of water and water quality measures to ensure fish populations favourable living conditions. Fish list for priority water shall be coordinated with the Ministry of agriculture. The list shall be reviewed at least every six years.
9. the conditions of this chapter shall not apply to natural or artificial ponds used for intensive fish-farming.
10. Priority fish waters are divided into: 10.1. lašveidīg fish in the waters in which live or where possible to ensure the salmon (Salmo salar), sea trout, and Brook trout (Salmo trutta), Grayling (thymallus thymallus) and whitefish (Coregonus) existence;
10.2. karpveidīg fish in the waters in which live or in which you may provide to the cyprinids (cyprinidae), as well as fish Pike (Esox Lucio), perch (Perca fluviatilis) and eel (Anguilla Anguilla) existence.
11. to control the priority water quality compliance with the requirements of this regulation, water samples are taken for 12 months at the same place, subject to this provision in annex 3 the frequency of sampling. Priority water quality of fish meeting the requirements of this regulation if: 11.1. the requirements set out in these rules referred to in annex 3 parameters: pH, Bod5, non-ionized ammonia, ammonium, nitrites, total residual chlorine free, zinc, and copper — 95% of samples match. If samples are taken less frequently than once a month, these requirements must conform to all samples;
11.2. the requirements set out in these rules referred to in annex 3 parameters: temperature and dissolved oxygen, these provisions comply with the model laid down in annex 3;
11.3. the average concentration of suspended substance meets this rule 3. the requirements set out in the annex;
11.4. particularly dangerous substances and dangerous substances in concentration does not exceed this rules 1 and 2 quality laid down in the annex;
11.5. no conditions, causing damage to fish populations.
12. The provisions referred to in paragraph 11, a quantity of the sample, the samples shall not be taken into account that the discrepancy was caused by floods or other natural disasters.
13. Priority water quality of fish without compliance with the rules set out in annex 3 quality standards do not conflict with the requirements of this regulation if the discrepancy caused soil constituent substances which natural processes come into waters (hereinafter referred to as the natural enrichment of waters).
 
 
IV. Water quality of bathing Water Regulations 14 are set out in the laws, as well as bathing waters in which bathing is not prohibited and is traditionally used for bathing, except for therapeutic purposes and water used in swimming pools.
15. the bathing water quality regulations for this provision in annex 4. These regulations do not apply to the bathing areas of the Cabinet of Ministers of 11 august 1998, the provisions of no. 300 "bathing and hygiene of the premises" in annex 1.
16. to control water quality compliance with the requirements of this regulation, water samples are taken at the same location, subject to this provision in annex 4 sampling frequency. The quality of bathing water complies with the requirements of these regulations if: 4. This provision 16.1. in the annex, the limit values corresponds to 95% of the samples;
16.2. the rules set out in annex 4 to meet the target of 90% of the samples (80% of the samples, analyzing the total coliform and faecal coliform counts);
16.3. the remaining samples that do not meet quality standards, different from those not more than 50% (this condition does not apply to microbiological parameters, pH and dissolved oxygen);
16.4. quality standards correspond to those of the relevant parameter values in the water samples, which did not match a sample taken at the establishing of a time interval to ensure statistical reliability of the data.
17. The rules referred to in point 16 of samples samples shall not be taken into account that the discrepancy was caused by floods or other natural disasters, or characteristic of the weather conditions.
18. Bathing mismatch this provision set out in annex 4. quality standards do not conflict with the requirements of this regulation if the discrepancy is due to the natural enrichment of the waters and if this discrepancy does not pose harm to human health.
 
 

V. water quality regulations used for the abstraction of drinking water in the surface waters 19. Surface water used or intended for use in the abstraction of drinking water and that the water supply using the system (used for the abstraction of drinking water the surface water), divided into three categories according to the used water purification methods: 19.1. A1 category — uses a simple physical treatment and disinfection;
19.2. Category A2-used physical and chemical treatment and disinfection;
19.3. A3 category — used intense physical and chemical treatment, extended treatment and disinfection.
20. used for the abstraction of drinking water in the surface waters according to the breakdown of this provision, paragraph 19 of the categories specified in annex 5 of these rules. The protection of the environment and regional development Ministry at least every four years, assess the provision contained in annex 5.
21. Water quality regulations used for the abstraction of drinking water in the surface water down this provision in annex 6. Quality regulations apply before water treatment according to the specified category.
22. to control used for the abstraction of drinking water in the surface water quality in compliance with the requirements of this regulation, water samples are taken at the same location, subject to the provisions laid down in annex 6 of the sampling frequency. Used for the abstraction of drinking water in the surface water quality meets the requirements of this regulation if: 22.1. This provision 6. limit values laid down in annex meets 95% of the samples;
22.2. the rest of this rule 6. requirements set out in the annex meet the 90% of the samples;
22.3. the remaining samples that do not meet quality standards, different from those not more than 50% (this condition does not apply to microbiological parameters, temperature, pH and dissolved oxygen), but it does not cause harm to human health;
22.4. quality standards correspond to those of the relevant parameter values in the water samples, which did not match a sample taken at the establishing of a time interval to ensure statistical reliability of the data.
23. The rules referred to in point 22 of samples samples shall not be taken into account that the discrepancy was caused by floods or other natural disasters, or characteristic of the weather conditions.
24. Drinking water, surface waters used for the abstraction of the non-compliance with the rules set out in annex 6 quality standards do not conflict with the requirements of this regulation if the discrepancy caused floods, other natural disasters or natural water enrichment and if this discrepancy does not pose harm to human health.
 
 
Vi. Water quality regulations for groundwater used for drinking water abstraction 25. This provision is laid down in annex 9 of the water quality standards apply to groundwater horizon and complex risks to waters used for the abstraction of drinking water, and where the average water volume of more than 10 m3 a day as well as groundwater horizon and their assemblies for use in the abstraction of drinking water.
26. If the chloride, sulphate, electrical conductivity, iron or permanganate index quality regulations has exceeded natural processes, there should be no direct or indirect emission or other activities that might lead to the parameter value increases in a given water horizon or complex.
 
 
VII. Water quality monitoring 27. Latvian environmental agency determines the specific sampling points, the distance to the nearest place of the emission of pollutants and sampling depth especially dangerous or hazardous substances and priority for the monitoring of fish the waters. The public health agency determines the sampling points water monitoring.
28. the requirements of these regulations to complete the analyses shall be carried out in an approved laboratory. The laboratory has the right to use other test methods, provided these rules 3, 4, 8 and 9 in the annex, where the relevant national standards or adapted in Latvia, international standards provide for the exchange of the methods and the results obtained are comparable with the results obtained with these rules 3, 4, 8 and 9 listed in annex testing methods, and if with a different test method of reach as high limit of detection , precision and accuracy, taking into account that: 28.1. detection limit is the lowest concentration of analyte in a sample which can be detected, but not always, can be expressed as a specific value.
28.2. accuracy is the difference between independent test results, conducted under certain circumstances (random error);
28.3. accuracy is the difference between a large number of repeated measurements and the average of the accepted reference value (systematic error).
29. Operator surface or ground water discharge especially dangerous or hazardous substances, carried out especially dangerous and monitoring of emissions of hazardous substances. Monitoring and control are carried out in accordance with the Cabinet of Ministers of 22 January 2002, the Regulation No. 34 "regulations on the emission of pollutants in the water."
30. environmental monitoring needs of the country, the regional environmental authority identify especially dangerous or hazardous substances emission in affected areas. The Latvian Environment Agency collects the information collected and controlled waters in affected areas with especially hazardous and dangerous substances, under the Cabinet of Ministers of 22 January 2002, rule no. 34 "regulations on the emission of pollutants in the water".
31. the Environment Agency carries out monitoring of priority water fish according to this provision the requirements of annex 3.
32. where monitoring data indicate that the fish in the waters of lašveidīg oxygen concentrations of less than 6 mg/l, but the waters — karpveidīg less than 4 mg/l, the Latvian Environment Agency and regional environmental management find oxygen concentrations decrease reasons and take measures to prevent damage to fish populations.
33. where monitoring data shows that the water quality priority is higher for this rule 6. requirements set out in the annex, the Latvian Environment Agency has the right to reduce the frequency of sampling. If the Latvian Environment Agency finds that certain fish for water pollution affect or not conditions which could impair the quality of the waters, it is entitled to a two-year stop following water sampling.
34. The public health agency to carry out bathing water monitoring according to this provision, 4. the requirements set out in the annex. Water quality control by the state sanitary inspection.

35. Water user, which prepares and delivers drinking water to customers, take drinking water abstraction used in surface water monitoring according to this rules 6, 7 and 8 the requirements set out in the annex.
36. Drinking water, surface waters used for the abstraction of water sampling the sampling sites before drainage to the treatment plants. The water used for the sampling containers, as well as reagents and methods used for the preservation of part of the sample, sample transport, storage and preservation should not significantly affect the analytical results. The analyses shall be carried out after the izkāšan of the sample through the wire mesh, to release it from floating debris, including wood and plastic pieces.
37. Drinking water, surface water used for the abstraction of the frequencies of sampling and analysis must not be less than 7 of these rules laid down in annex the minimum annual frequencies. Samples are taken throughout the year with equal intervals, for complete information about the water quality.
38. where monitoring data indicate that used for the abstraction of drinking water in the surface water quality is higher in certain parameters for this rule 6. requirements set out in the annex, the public health agency has the right to allow the operator to relevant samples less than that laid down in annex 7 of these rules.
39. Water user, which prepares and delivers drinking water to customers, take drinking water abstraction of groundwater monitoring to be used under this provision 9. requirements set out in the annex and water deposits in the Passport.
40. This provision 9. table 1 of the annex to the above parameter for determining concentration using the test methods that reach as high limit of detection, precision and accuracy, as referred to in this provision table 2 of Annex 9. Regardless of the testing methods used in the sensitivity of the results to the point with the same number of decimal places as that rule 9. in table 1 of the annex.
 
 
VIII. measures for the prevention of pollution 41. If the results of the monitoring or other data indicate that the quality regulations in a given body of water not reached or not reached the planned deadlines, the protection of the environment and regional development Ministry instructs the environmental protection bodies: 25.5. to explore the causes of non-compliance;
41.2. to reconsider the conditions contained in the permit (A) or (B) the categories of polluting activities, or water use permit, reducing the required emission limits;
41.3. review monitoring programs and to make those amendments;
25.7. other measures to prevent further deterioration in water quality and promote its improvement.
42. The protection of the environment and regional development Ministry will not hesitate to make this rule 41. measures referred to in paragraph 1, if the causes of non-compliance cases of force majeure, including large floods or prolonged drought.
43. The protection of the environment and regional development Ministry according to the law "on pollution" to develop article 17:43.1. the priority action programme to reduce pollution of the waters and the rules laid down in annex 3 requirements of quality assurance;
43.2. the action programme to reduce pollution and water quality in accordance with this provision, 4. the requirements set out in the annex.
 
 
IX. Information 44. to the aquatic environment inform the public, State and local authorities, the Latvian Environment Agency: 44.1. every two years, prepare a report on surface and ground water protection, including information on this provision 13., 18., and in paragraph 24 to the application of the requirements and the action taken;
44.2. the report on the State of the environment every year, includes information on the results of monitoring in accordance with the provisions of article 29, 30, 31, 34, 35 and 39 with the requirements set out in paragraph;
27.5. shall ensure that the public have access to information that you provide to the Commission of the European Union in accordance with the provisions of paragraph 45.
45. In order to inform the Commission of the European Union, Latvian Environmental Agency: 45.1. at least every four years, the report on amendments to these rules 1 and 2 in the annex;
45.2. report on priority water and fish in the water, and amendments to the lists;
45.3. inform about this rule 13, 18, 24 and 42 in application of the requirements and the action taken;
28.2. every three years report on surface and ground water protection and enforcement of these rules, but once a year — about water protection. Report on surface and ground water protection sends nine months after the end of the calendar year, but a report on bathing water protection before the end of the calendar year;
28.3. provides information about this rule referred to in paragraph 43 of the action programmes: 45.5.1. — for the first time within six months of their publication;
45.5.2. further information — updated every other year to 30 June;
45.6. six months after the receipt of the information about, according to this provision the requirements of Chapter VII results of the monitoring carried out;
28.4. provide information on surface and groundwater monitoring methods.
46. where the priority of the fish the waters cross or form national frontiers, environmental protection and regional development Ministry at the request of the State concerned or on its own initiative, consult with the countries concerned to determine which waters apply these rules laid down in annex 3 quality regulations and determine the measures necessary for the achievement.
47. where these rules determine the quality regulations have not been met or planned deadlines will not be achieved in cross-border waters, a regional environmental authority shall inform the environmental impact assessment State Bureau, who shall in turn inform the countries concerned.
 
 
X. closing questions 48. Chapter III of these rules, 16, 30, 31, 32, 33 and 34 shall enter into force by 1 January 2003.
49. environmental protection and regional development, the Ministry of development and up to January 1 2004, the approval of the Cabinet of Ministers that rule 43, paragraph action programmes.
50. This rule 44.3. subparagraph and paragraph 45 shall enter into force with special rules.
Prime Minister a. Smith of environmental protection and regional development Minister v. Makarova in the Editorial Note: the entry into force of the provisions to the April 4, 2002.
 
1. the annex to Cabinet of 12 March 2002, the Regulation No 118 specific limit values for dangerous substances into surface water No.
CAS name of substance threshold (1) µ g/l PO box

number of fresh sālsūdeņo 1.
107-06-2 1.2-dichloroethane 10 10 2.
120-82-1 1, 2, 5-trichlorobenzene 0.4 0.4 3.
Aldrin 309-00-2 0.01 0.01 4.
50-29-3 dihlordifeniltrihloretān (DDT) 0.002 0.002 (dihlordifenildihloretān (SWP) and dihlordifenildihloretilēn (DDE)) 5.
dieldrin 60-57-1 0.01 0.01 6.
-Mercury and its compounds (2) 1.0 0.3 7.
772-20-8 endrin 0.005 0.005 8.
87-68-3, or perhlorbutadiēn of hexachlorobutadiene 0.1 0.1 9.
118-74-1 hexachlorobenzene 0.03 0.03 10.
608-73-1 hexachlorocyclohexane (all isomers) 0.01 0.01 11.
67-66-3 chloroform 12 12 12.
465-73-6 in 13.0.005 0.005 isodrin
-cadmium and its compounds 5 14 2.5.
127-18-4 tetrachloroethylene perchloroethylene or 10 10 15.
87-86-5 pentachlorophenol 2 2 16.
56-23-5 carbon tetrachloride or tetrahlormetān of 12 12 17.
79-01-6 trichloroethylene 10 10 18.
-trichlorobenzene, technical blend 0.4 0.4 notes.
(1) the table shows the maximum permissible concentration in the average year.
(2) the waters of transition threshold is 0.5 µ g/l For metal concentrations of these elements be ion concentration in water.
Environmental protection and regional development Minister v. Makarova 2. Annex Cabinet of 12 March 2002, the Regulation No 118 limit values for dangerous substances into surface water No.
CAS name of substance threshold (1) µ g/l PO box
number of fresh-water sālsūdeņo i. metals and other substances 1.
arsenic and its compounds — 36 150 2.
— zinc and its compounds 81 120 3.
-chromium and its compounds 50 11 4.
— nickel and its compounds 8.2 52 5.
— lead and its compounds 8.1 2.5 6.
— copper and its compounds 3.1 9.0 II. Organic substances 7.
75-35-4, 1.1-dichloroethylene 100 100 8.
94-75-7 2.4-dihlorfenoksietiķskāb-10 10 9.
107-05-1 3-chloropropene 100 100 10.
107-13-1 acrylonitrile 8 8 11.
1912-224-9 atrazine 1 1 12.
109-89-8 diethanolamine is 100 100 13.
95-50-1 1.2-dichlorobenzene 541-73-1 1.3-dichlorobenzene 106-46-7 10 10 1.4-dichlorobenzene 14.
75-09-2 dichloromethane 10 10 15.
124-40-3 in dimetilamīn 10 10 16.
60-51-5 or a 1 1 17 rogor Dimethoate.
106-89-8 epichlorohydrin 100 100 18.
122-14-5 fenitrothion 0.01 0.01 19.
-phenols (phenol index) 300 300 20.
50-00-0 formaldehyde 95000 95000 21.
67-72-1 10 10 22 hexachloroethane.
95-51-2 2-chloroaniline 108-42-9 3-chloroaniline 10 10 106-47-8 4-chloroaniline 23.
chlorobenzene 108-90-7 1 1 24.
— hlornaftalīn, the technical mixture 0.01 0.01 25.
330-55-2 linuron 1 1 26.
121-75-5 Malathion 0.01 0.01 27.
91-20-3 naphthalene 1.2 1.2 28.
— 0.01 0.01 of tin organic compounds (expressed as Tin) 29.
— polychlorinated biphenyls (PCB) 0.01 0.01 30.
122-34-9 simazine 1 1 31.
126-73-8 100 100 32 of the tributyl phosphate.
1582-09-8 0.1 0.1 33 trifluralin.
71-55-6 1,1,1-trichloroethane 79-00-5 100 100 1, 1,2-trichloroethane 34.
95-95-4 2, 4, 5-trichlorophenol 933-78-8 1 1 2, 3, 5-trichlorophenol 88-06-2-2, 4, 6 trichlorophenol. Petroleum products III 35.
-10 10 monoaromātisk hydrocarbons (benzene, toluene, Ethylbenzene, xylene) with aggregates BTEX 36.
— non-cyclical oil hydrocarbons 100 100 37.
— polyaromatic hydrocarbons (PAH) 0.001 0.001 note.
(1) the table shows the maximum permissible concentration in the average year.
The metal concentrations in these elements be considered as ion concentration in water.
Environmental protection and regional development Minister v. Makarova in annex 3 of the Cabinet of Ministers of 12 March 2002, the Regulation No 118 water quality regulations for priority water No fish.
Parameter/unit Lašveidīg the waters of fish Karpveidīg fish water test method minimum sample p.k.

target value target value of threshold limit values the sampling frequency 1.
Ammonium ion (mg/l NH4-) ² ² ² 0.03 0.78 (1) ² 0.16 0.78 (1) — — distillation and spectrophotometry titrimetrij — stream analysis 2.
Biological oxygen demand Bod5 ² ² 2 4 five day incubation method (mg/l O2) EN EN 1899-1.2:1998 (oxygen is determined by the Winkler method or electrochemically) 3.
Zinc (mg/l Zn) ² ² 1.0 0.3 atomic absorption spectrophotometry 4 once a month.
Phenols (phenol index) — 0.005 0.005 spectrophotometry (mg/l C6H5OH): flow analysis 5.
Dissolved oxygen (mg/l O2) 50% 9 50% 9 50% ³ ³ ³ ³ 7 8 50% — the Winkler method at least once a month 7 100% 100% ³ ³ 5-electrochemical method in one sample, which indicates the lowest concentration of O2 day (take the Chair.







12 noon). If possible, take the large fluctuations vis-2 samples per day 6.
Total free chlorine (mg/l HOCl) (2) ² ² 0.005 0.005 (2) DPD method (with diethyl-p-Phenylenediamine once a month) 7.
Total phosphorus (mg/l P) ² ² 0.100 0.065 1) spectrophotometry 2) flow analysis 8.
Petroleum hydrocarbons (3) (3): a Visual inspection once a month (4) — gas chromatography-infrared spectrophotometry 9.
Non-ionised ammonia (mg/l NH3) ² ² ² 0.005 0.025 (5) ² 0,025 0.005 (5) calculation of the ammonium ion concentration once a month, taking into account the temperature and pH 10.
Nitrite (mg/l NO2-) ² ² 0.01-0.03 spectrophotometry, HPLC-Analysis of flow 11.
pH (pH units) 6-9 (0), (6) 6-9 (0), (6) the electrochemical method with pH meter once a month, 12.
Suspended substances (mg/l) 25 (0) ², ² (7) 25 (0), (7) filtering through glass fibre filter EN EN 872:1996 13.
Temperature (° C) (8) (8) termometrij once a week until 12 noon at 14.
Copper (mg/l Cu) ² ² 0.04 0.04 atomic absorption spectrophotometry notes.
The metal concentrations in these elements be considered as ion concentration in water.
(0) may exceed These regulations not specific hydrological or meteorological conditions.
(1) the concentration exceeds this threshold, do not conflict with the requirements of this regulation, if it is not characteristic of hydrological or meteorological conditions, low water temperature or slow nitrification or where regional environmental governance has received the Latvian Institute of fisheries research finding that the concentration of such harmful affects fish populations.

(2) such concentration allowed if water pH value of 6. Higher pH values permissible higher total chlorine free.
(3) oil products may only contain water in such quantities as to: 1) do not constitute a visible film on the water surface or coating on the watercourses and the lake bottom;
2) does not grant the fish felt "hydrocarbon" taste;
3) harmful affect fish populations.
(4) during Visual inspections determine whether on the water surface observed oil film forms, and take soil samples to determine the presence of oil coating. Such verification shall be carried out once a month. Fish taste test only if there is a reasonable suspicion the fish water pollution with petroleum products.
(5) this is not a violation of the regulations, if a day observed in separate non-ionised ammonia temporarily concentration increases.
(6) emissions affect the priority shall be allowed to fish the waters of the natural pH value changes of ± 0.5 pH units, if such changes are from pH 6 to pH 9 and if they are not reinforced in other substances present in the water of harmful effects.
(7) the average concentration of suspended substances is not applicable if the suspended matter consists of hazardous substances. A tolerance of suspended matter concentration increased significantly during floods.
(8) the requirements of the priority of the water temperature of the fish is determined taking into account the following conditions: 1) the priority water temperature downstream of the thermal exhaust (measured at the mixing zone) must not exceed the outlet water temperature does not affect the about: 1.5 ° C — lašveidīg fish waters;
3 ° C to karpveidīg fish waters.
Thermal exhaust, which leads to greater temperature increases are permitted if received Fisheries Research Institute of Latvia's opinion that such increased water temperature damaging affect fish populations;
2) priority water temperature for fish downstream of the thermal exhaust (measured at the mixing zone) must not exceed: (0) — lašveidīg 21.5 ° C fish waters;
(0) 28 ° C — karpveidīg fish waters;
3) if priority waters inhabited by fish species that spawn requires a cold water, spawning periods following water temperature thermal discharges must not exceed: (0) 10 ° C — lašveidīg fish waters;
(0) 10 ° C — karpveidīg fish waters;
4) temperature limits to be exceeded by not more than 2% of the total number of measurements.
Environmental protection and regional development Minister v. Makarova in annex 4 of the Cabinet of Ministers of 12 March 2002, the Regulation No 118 bathing water quality regulations no
Parameter/target-Border-test method minimum p.k.
unit size size sampling frequency i. microbiological indicators 1.
Involved (PF 0 virus indication at least (2) 10 litres) 3 different tissue cultures 2.
Faecal coliforms 100 2000 multi-stage fermentation time (e. coli) dilution tubes.
two (100 ml) positive subcultures stop-not-prināšan for feeds.
weeks (1) counting with the VIS (most probable number method) or membrane filtration and cultivation on a suitable kultūrbarotn. Suspicious colonies subcultivation and identification. Determining both the total number of coliform and faecal coliform counts, incubation t ° is variable.





LVS EN ISO 9308-1:2001 and EN ISO 9308-1:1990 3.
Intestinal enterococci 100 counting with the VIS (the most (2) (100 possible numbers method) ml) or membrane filtration method. Cultivating the applied kultūrbarotn.





LVS EN ISO 7899-1:1998 LVS EN ISO 7899-2:2001 4.
Coliform bacteria like fekālaj every 500 10000 (100 ml in two coliform) weeks (1) 5.
Salmonella Concentration with 0 membrane (2) (1000 ml) filtering method. The standartbarotn of Inok would.





— Subkult-bottom gears blooms leading to isolation agar — identification.





EN ISO 6340:1995 II. Physico-chemical indicators 6.
The absorption of ammonium ions spektrofot-(3) (mg/l NH4 +) metrij, Nessler or blue indofenol method 7.
Transparency (m) 2, 1 (0) Measurement the sample time sampling with two drive Sekk weeks (1) 8.
Cianīdjon (mg/l CN-) absorption, (2) spektrofometrij using specific reagents 9.
Phenols (phenol phenol is not typical 0.005 ² time index) spec-specific odors in two (mg/l C6H5OH) fisk assay or absorption spectrophotometry weekly-odor method ļās (1), (2) ²-4 aminoantipirīn 0.005 (4-AAP) 10.
Dissolved the 80-120 the Winkler method, or (2) oxygen-elektrometrisk method of saturation (% O2) (meter) 11.
Nitrogen (mg/l N) Kjeldahl method (3) 12.
Color (Pt/Co scale) no visual inspection or time with the standard nepa-photometry of two result after Pt/Co scale weekly-change ļās (1), (2) (0) 13.
Mineral oil (mg/l) ² 0.3 is not a Visual inspection, or every article-extraction using the appropriate two Riga volume and weighing the dry weeks-smell the remainder.
ļās (1), (2) and mouse-extraction with suitable solvents and determination to give the film an infrared spektrofot-meter or gas chromatograph.

14. Nitrātjon and atomic absorption spectrophotometry in fosfātjon (3) using (mg/l NO3-specific reagents mg/l PO43-) 15.
Floating not-Time Visual inspection may be two impurities (such as a tree, be weeks (1) plastic, rubber, bottles, tar, shavings, waste) 16.
pH (pH units) 6-9 (0) Elektrometrij with calibration (2) a standard buffer pH 7 and 9 17.
Pesticides (4) (mg/l) with the appropriate Extraction (2) hromat-grāfisk solvent and the detection of 18.
Heavy metals atomic absorption method (2) arsenic (As), (possible to use cadmium (Cd), the concentration of the extraction) chromium (Cr (VI)), copper (Pb), mercury (Hg) (mg/l) 19.
Surface active ² 0.3 is not a Visual inspection or once a substance that reacts to long-absorption spektrofot-two with methylene blue (mg/l Cates with methylene blue metrij weekly-(Na dodecil-blowing ļās (1), (2) benzosulfonāt)) notes.

The metal concentrations in these elements be considered as ion concentration in water.
(0) No specific hydrological or meteorological conditions in public health agency may permit derogations from the standards set for this parameter, if such actions do not cause damage to human health.
(1) If the previous years, the monitoring results obtained shows that the water quality is significantly higher than the requirements laid down in this annex and if not occurred previously unprecedented circumstances, which could lower water quality, public health, the Agency has the right to take such samples two times less.
(2) the public health agency controlled by this parameter if the peldūdeņo found that its presence in water is possible or that the deteriorated water quality.
(3) the public health agency controlled by the concentration of the substance, if the waters have become or may become eutrophic.
(4) the parameter "pesticides" represents the sum of all pesticides, which have been established for specific monitoring. Pesticides include organic insecticides, organic herbicides, organic fungicides, organic matocīd, organic agricīd not, organic rodenticides, organic slimicīd, related products (growth regulator), as well as relevant metabolites, degradation and reaction products. Control only pesticides that may be present in the body of water is possible.
Environmental protection and regional development Minister v. Makarova in annex 5 of the Cabinet of Ministers of 12 March 2002, the Regulation No 118 for the abstraction of drinking water the surface water to be used for the classification of the categories no PO box
Name sampling point purification methods category 1.
Daugava water treatment plants "Daugava" Ozonēšan (twice), coagulation/flocculation/A3 water purification station "Daugava" sampling room sedimentation, pH adjustment (twice), filtration, disinfection (double) 2.
Small baltezers water sampling platform for artificial groundwater recharge A1 Sudrabezer before infiltration water pump station of water infiltration of natural and Venč Lake Sekš Lake of the disinfection of water pumping station "baltezers" environmental protection and regional development Minister v. Makarova 6. attachment Cabinet of 12 March 2002, the Regulation No 118 water quality regulations used for the abstraction of drinking water in the surface waters according to the classification of the categories no PO box
Parameter/unit A1 A2 A3 target-border-the border-the-borders-target-size size size size size size 1.
Adsorbējam organic halides (AOX) (µ g/l) (1) (1) (1) 2.
Aluminum (mg/l) 3 0.2 0.5 0.5.
ammonium ion (mg/l Al) 0.05 0.5 1 1.5 2 4 (0) 4.
Antimony (mg/l Sb) 0.005 0.005 0.005 5.
Arsenic (mg/l) 0.01 0.05 0.05 0.1 6.
Barium (mg/l Ba) 0.1 1 1 7.
Benzene (mg/l C6H6) 0.001 0.001 0.002 8.
Biochemical oxygen demand (Bod5) (20 ° C, nitrification) (mg/l O2) < 3 < 5 < 7 9. Boron (mg/l B) 1 1 1 1 10. Cianīdjon (mg/l CN-) 0.05 0.05 0.05 11. Zinc (mg/l Zn) 0.5 3 1 5 1 5 12. iron (mg/l Fe) 0.1 0.2 1 2 1 13. Mercury (mg/l Hg) 0.0005 0.001 0.0005 0.001 0.0005 0.001 14. Electrical conductivity (µS/cm) 1000 1000 1000 15. Faecal coliform (100 ml) 20 2000 20000 16. Intestinal enterococci (100 ml) 20 1000 10000 17. Phenols (phenol index) (mg/l) 0.001 0.001 0.005 0.01 0.1 Fluorīdjon 18 (2) (mg/l F) 0,7-1.5-1,7-1 0.7 0.7 1.7 19. Fosfātjon (mg/l PO43-) 20 Hlorīdjon 0.18 0.3 0.3 (mg/l Cl-), 200 250 200 200 21. Dissolved oxygen saturation% (% O2) > 70 > 50 > 30

22. cadmium (mg/l Cd) 0.001 0.005 0.001 0.005 0.001 0.005 23.
Total chromium (mg/l Cr) 0.05 0.05 0.05 24.
Total coliforms count 37 ° C (100 ml) 50 5000 50000 25.
Total organic carbon (TOC) (mg/l C) (1) 26.
Total pesticides (3) (mg/l), 0.005 0.005 0.005 27.
Total suspended (mg/l) 25 28.
Color (after simple filtration) (Pt/Co scale) (0) 10 20 50 100 50 200 (0) (0) 29.
Chemical oxygen demand (COD) (mg/l O2) 30 30.
Manganese (mg/l Mn) 0.05 0.05 0.1 1 31.
Petroleum hydrocarbons (mg/l) 0.05 0.2 0.5 1 32.
Sodium (mg/l Na) 200 200 200 33.
Nickel (mg/l N) 0.02 0.02 0.02 34.
Nitrātjon (mg/l NO3-) (0) 25 50 50 (0) 50 (0) 35.
Nitrite (mg/l NO2-) 0.5 0.5 0.5 36.
Permanganate index (mg/l O2) 5.0 10 20 37.
Pesticides (3), (4) (mg/l) 0.001 0.001 0.001 38.
pH (pH units) 6.5-8.5 5.5-5.5-9 9 39.
Polycyclic aromatic hydrocarbons (PAH) (5) (mg/l) 40 0.0001 0.0002 0.001.
Salmonella (1000 ml and 5000 ml) 0 0 41.
Selenium (mg/l Se) 0.01 0.01 0.01 42.
Nitrogen by the Kjeldahl method, except for the NO3-(mg/l N) 1 2 3 43.
Odour (odour threshold at 25 ° C) 3 10 20 44.
Sulfātjon (mg/l SO42-) (0) 150 150 250 150 250 250 (0) 45.
Lead (mg/l Pb) 0.01 0.05 0.05 46.
Temperature (° C) (0) 22 22 25 25 25 (0) 22 (0) 47.
Tetrachloroethylene (tetrahloretēn) and trichloroethylene (trihloretēn) (6) (mg/l) 0.001 0.001 0.001 48.
Copper (mg/l Cu) 0.02 0,05 0.05 0 (0) 1 49.
Surface active agents (who reacts with methylene blue) (mg/l (Na dodecilbenzosulfonāt)) 0.2 0.2 0.5 notes.
The metal concentrations in these elements be considered as ion concentration in water.
(0) The regulations do not exceed the specific meteorological and hydrological conditions.
(1) is not found in the typical change.
(2) upper-bound concentrations of high fluorīdjon and low average annual temperature.
(3) the parameter "total pesticides" represents the sum of all the pesticides control. Pesticides include organic insecticides, organic herbicides, organic fungicides, organic matocīd, organic agricīd not, organic rodenticides, organic slimicīd, related products (including growth regulators), as well as relevant metabolites, degradation and reaction products. Only those pesticides that may be present in a given body of water.
(4) this limit applies to each individual pesticide. For aldrin, dieldrin threshold, heptachlor sum of heptachlor and epoxy is 0.030 µ g/l (for all categories of water).
(5) benzo (b) fluoranthene, benzo (k) fluoranthene, benzo (g, h, i) perylene, indeno (1,2,3-c, d) pyrene.

(6) the Threshold refers to the total of these two compounds.
Environmental protection and regional development Minister v. Makarova 7. attachment Cabinet of 12 March 2002, the Regulation No 118 used for the abstraction of drinking water in the surface water control parameters and sampling frequency i. control parameters group, which set out in table 2 sampling frequency table 1 (I) (II) parameter group parameter group parameter group III ions of Ammonium aluminium Adsorbējam organic halides biochemical oxygen consumption in zinc-arsenic (Bod5) electrical conductivity of iron in faecal coliform Fosfātjon barium a number of benzene to Phenol index Hlorīdjon Bohr, dissolved oxygen, total coliform count in the total Cianīdjon saturation suspended manganese mercury color nitrogen (intestinal enterococci by Kjeldahl method specified number) chemical oxygen consumption in Sulfātjon in Fluorīdjon (COD) Sodium copper cadmium Nitrātjon surface active substances total chromium, petroleum hydrocarbons Nitrite permanganate index nickel PH pesticides smell of polycyclic aromatic hydrocarbons (PAHs) temperature salmonella selenium tetrachloroethylene and trichloroethylene lead (II). The minimum sampling frequency in table 2 annual surface water surface water surface water category A1 A2 A3 category category serves a population of about-metres II PG
PG PG PG III I II III I II III PG PG PG PG number group (PG) (*) 10000 1 1 2 1 3 1 1 30000 2 1 (*) (*) (*) 4 2 1 6 2 1 100000 3 2 8 4 1 12 4 1 note.
(*) Sampling frequency for each specific water intake location determines the institution issuing the permit (A) or (B) the categories of polluting activities, or water use permit.
Environmental protection and regional development Minister v. Makarov 8. attachment Cabinet of 12 March 2002, the Regulation No 118 used for the abstraction of drinking water in the surface water test methods No.
Parameter/measure of the accuracy of Detection Accuracy test method recommended p.k.

the border of the container material 1.
Aluminum (mg/l Al) 10% 10%-0.02 atomic absorption spectrophotometry: spectrophotometry 2.
Ammonium ion (mg/l NH4-) 0.01 (1) 0.03 (1) 0.03 (1) spectrophotometry with flow analysis 0.1 (2) 10 (2) 10 (2): spectrophotometry 3.
Antimony (mg/l Sb) 0.0005% 25% 25-atomic absorption spectrophotometry 4.
Arsenic (3) 0.002 (mg/l) (1) 10% 10%-atomic absorption spectrophotometry (4) 0.01-atomic absorption spectrophotometry: spectrophotometry 5.
Barium (3) (mg/l Ba) 0.02% 30% 15-atomic absorption spectrophotometry 6.
Benzene (C6H6 mg/l) 25% 25%-0.0001 gas chromatography 7.
Biochemical oxygen demand (Bod5) of 20 ° C, 2 2 1.5 — determination of the oxygen consumption of five days without nitrification (mg/l O2) incubation period EN EN 1899-1.2:1998 8.
(3) boron (mg/l B) 10% 10% 0.1-atomic absorption spectrophotometry of materials that do not contain significant boron-spectrophotometry in volume 9.
Cianīdjon (5) (mg/l CN-) 0.01 to 20% to 30% — spectrophotometry 10.
(3) zinc (mg/l Zn) 0,01 (1) 10% 20% — atomic absorption spectrophotometry 0.02 10% 20% — atomic absorption spectrophotometry: spectrophotometry 11.
Iron (mg/l Fe) 0.02 10% 10%-atomic absorption spectrophotometry, spectrophotometry 12.
Mercury (3) (mg/l Hg) 0.0001% 20% 20-atomic absorption spectrophotometry 0,0002 (4) (cold vapour technique) 13.
Electrical conductivity 20 ° C (µS/cm): 5%, 10%, konduktometrij 14.
Faecal coliforms (e. coli) (100 ml), 2 (1): General instructions of sterilized glass cultivations, 200 (6) accounting for plastic micro-EN ISO 8199:1988 — membrane filtration method LVS EN ISO 9308-1:2001: a multistage dilution (most likely) the method EN ISO 9308-1:1990-mikrometod-LVS EN ISO 9308-3:1998 15.
Intestinal enterococci (100 ml), 2 (1) 200 (6): the membrane filtration method for sterilized glass, LVS EN ISO 7899-2:2001 16 plastic.
Phenols (phenol index) (mg/l C6H5OH) 0.0005 0.0005 0.0005-spectrophotometry with flow analysis glass 0.001 (7) 30% to 50% — spectrophotometry 17.
Fluorīdjon (mg/l F) 10% 10% 0.05-spectrophotometry, if necessary, after distillation, ion selective electrodes, liquid chromatography 18.
Fosfātjon (mg/l PO43-) 0.02 10% 20% — — liquid chromatography spectrophotometry, 19.
Hlorīdjon (mg/l Cl-) 10 10% 10%-titrimetrij (Mora), liquid chromatography-spectrophotometry 20.
Dissolved oxygen saturation (% O2), 5 10% 10% — Winkler method elektrometrisk method of glass — 21.
(3) cadmium (mg/l) 10% 10%-0.0002 atomic absorption spectrophotometry 0.001 (4): 22 polarogrāfij.
Total chromium (3) (mg/l Cr) 10% 10% 0.01-atomic absorption spectrophotometry: spectrophotometry 23.
Total coliform (100 ml) 5 (1): the membrane filtration method sterilized glass, 500 (6) LVS EN ISO 9308-1:2001 plastic — general guidance for recording micro-organisms cultivated EN ISO 8199:1988 — tiered dilution (most likely) the method EN ISO 9308-1:1990 24.
Total organic carbon (TOC) (mg/l C) – organic carbon oxidation during combustion, materials, CO2 detection with IR spectrophotometry, not the target conductivity, thermal conductivity, component and CO2 sensors does not undermine their kon-centrācij 25 in the sample.
Total pesticides (3, 8, 9) (mg/l) 25% 25% 0.000125 — gas chromatography, liquid chromatography glass 26.
Total suspended solids (mg/l) 5% 10% — of the gravimetric EN EN 872:1996 27.
Color (after filtering the sample) (Pt/Co scale) 5 10% 20% — filtering through glass fibre membrane and photometric method, using the Platinum-cobalt scale, the Visual method 28.
Chemical oxygen demand (COD) (mg/l O2) 15 20% 20% potassium dichromate method — the titrimetrij







-electrochemical method 29.
Manganese (mg/l Mn) 10% 10%, 0.005-0,01 atomic absorption spectrophotometry (1) 10% 20% 0.02 (2) 10% 20% — atomic absorption spectrophotometry: spectrophotometry 30.
Petroleum hydrocarbons (mg/l) 0.01 to 20% to 30% — gas chromatography glass 0.04 (2) — infrared spectrophotometry 31.
Sodium (mg/l Na) 20 10% 10%-flame emission spectrophotometry 32.
Nickel (mg/l N) 0.002 10% 10%-atomic absorption spectrophotometry 33.
Nitrātjon (mg/l NO3-) 2 10% 10%-reduction Cd column and Spectrophotometric detection — — liquid chromatography spectrophotometry, 34.
Nitrite (mg/l NO2-) 10% 10% 0.00005 spectrophotometry 35.
Permanganate index (10) (mg/l O2) 25% 25% — 0.5 titrimetrisk method with KMnO4, 36.
Pesticides (9) (mg/l) 25% 25% 0.000025 — gas chromatography glass (0.0000075) (11) — liquid chromatography 37.
pH (pH units): the elektrometrij 38-0.1 0.2.
Polycyclic aromatic hydrocarbons (3, 12) 0.000025 50% 50% — gas chromatography glass or aluminium (Pao) (mg/l) — liquid chromatography 39.
Salmonella (13) (5000 ml: LVS ISO 6340:1995 sterilized glass, 1000 ml) — a large volume of water sample (1.0-5, 0lu) filter plastic membrane filter (0, 45 mm) concentration of bacteria. Concentrated sample of bacteria cultured standard specified in the method of liquid and/or solid selective medium, typical colonies of insulated and differential medium will be approved, identified by biochemical and serological tests.

40. Selenium (3) (mg/l Se) 10% 10% — 0.001 atomic absorption spectrophotometry 41.
Nitrogen by the Kjeldahl method, except the digestion, distillation 0.3 0.5 0.5 — with the Kjeldahl method and the NO2 and NO3 (mg/l N) determination of ammonium by molecular absorption spectrophotometry or titration — calculation, determining total nitrogen and separate nitrogen form 42.
Odour (odour threshold at 25 ° C) — — — — several times the sample diluted glass 43.
Sulfātjon (mg/l SO42-) 10 10% 10% — — liquid chromatography gravimetry 44.
Lead (3) (mg/l Pb) 10% 10% — 0.001 atomic absorption spectrophotometry: the polarogrāfij 45.
Temperature (° C): 0.5 1 — termometrij (measured at the time of sampling without prior treatment of the sample) 46.
Tetrachloroethylene (tetrahloretēn) and 25% (14) 25 0.0005 (14) — gas chromatography trichloroethylene (trihloretēn) (mg/l) 47.
Copper (3) (mg/l Cu) 10%, 20%, 0.005 atomic absorption spectrophotometry-polarogrāfij 0.02 (15) 10% 20% — atomic absorption spectrophotometry: a 48-polarogrāfij spectrophotometry.
Surface active substances which react with — methylene blue spectrophotometry (mg/l EN ISO 7875-1:1996 (Na dodecilbenzosulfonāt)) EN ISO 7875-2:1984 notes.
(1) category A1 water (target value).
(2) the waters of category A2 and A3.
(3) if the samples contain so much suspended matter that required them in advance to purification, exceptionally, it is permissible to exceed the accuracy specified in table and believe table the specified size on the target, you should strive to achieve. The following samples handled in such a way as to ensure that the analysis covers the most controlled substances.
(4) the categories A1, A2 and A3 waters (threshold).
(5) this test method determines the total amount of cianīdjon in any form.
(6) the waters of category A2 and A3 (target value).
(7) the waters of category A2 (threshold) and A3 waters category.
(8) the parameter "total pesticides" represents the sum of all pesticides, which have been established for specific monitoring. Pesticides include organic insecticides, organic herbicides, organic fungicides, organic matocīd, organic agricīd not, organic rodenticides, organic slimicīd, related products (including growth regulators), as well as relevant metabolites, degradation and reaction products. Control only pesticides that may be present in the body of water is possible.
(9) the accuracy of the test method, accuracy and limit of detection to be each individual pesticide and will vary depending on the characteristics of pesticides.
(10) the Oxidation is carried out for 10 minutes at 100 ° C with permanganate in acidic media.
(11) the detection limit for aldrin, dieldrin, heptachlor and Heptachlor-epoxy is 0.0000075 mg/l. (12) benzo (b) fluoranthene, benzo (k) fluoranthene, benzo (g, h, i) perylene, indeno (1,2,3-c, d) pyrene.
(13) the salmonella is found in 5000 ml of water (the target category A1 waters) and 1000 ml (target value of category A2 waters).
(14) the accuracy of the method, precision and detection limit to apply for each of these substances separately 50% at a concentration of this provision in annex 6.
(15) the categories A3 waters.
Environmental protection and regional development Minister v. Makarov 9. attachment Cabinet of 12 March 2002, the Regulation No 118 quality regulations groundwater used for drinking water abstraction, and requirements for the monitoring of such water quality standards i. underground waters used for the abstraction of drinking water table 1 no PO box
Parameter Measurement threshold methods of testing principles 1.
Ammonium ion NH4 + 0.50 mg/l — spectrophotometry with flow analysis, spectrophotometry 2.
Antimony Sb 5.0 µ g/l atomic absorption spectrophotometry 3.
Arsenic µ g/l S 10 atomic absorption spectrophotometry.
Benzo (a) pyrene µ g/l 0.010 chromatography 5.
Benzene C6H6 µ g/l 1.0 chromatography 6.
Boron mg/l (B) 1.0-atomic absorption spectrophotometry: spectrophotometry 7.
Cianīdjon to 50 µ g/l CN-spectrophotometry 8.
Iron Fe-200 µ g/l spectrophotometry, atomic absorption spectrophotometry 9.
Mercury Hg µ g/l 1.0 atomic absorption spectrophotometry 10.
Electrical conductivity µS/cm at 20 ° C elektrometrij-2500 St. 11.
Fluorīdjon in mg/l F-1.5 — — liquid chromatography spectrophotometry 12.
Hlorīdjon (1) mg/l Cl-250 — titrimetrij — liquid chromatography spectrophotometry of 13.
Organochlorinated solvents (2) µ g/l 10 of 14 chromatography.
Chromium 50 µ g/l Cr atomic absorption spectrophotometry 15.
Manganese Mn-50 µ g/l atomic absorption spectrophotometry





— spectrophotometry 16.
Cadmium Cd 5.0 µ g/l atomic absorption spectrophotometry 17.
Sodium µ g/l Na 200 flame emission spectrophotometry 18.
Nickel Ni 20 µ g/l atomic absorption spectrophotometry 19.
Nitrātjon (3) mg/l NO3-50-spectrophotometry with flow analysis, spectrophotometry 20.
In mg/l nitrite NO2-0.50-spectrophotometry with flow analysis, spectrophotometry 21.
Permanganate index mg O2/l titrimetrij of 5.0 22.
Pesticides (4) µ g/l 0.10 chromatography 23.
Pesticides (total) (5) µ g/l 0.50 chromatography 24.
Ph pH unit ² ³ 25 6.5 and 9.5 potentiometry.
Polycyclic aromatic µ g/l 0.10 chromatography hydrocarbons (PAH) (6) 26.
Selenium 10 µ g/l Se atomic absorption spectrophotometry 27.
Sulfātjon in mg/l SO42-250 — liquid chromatography — — 28 gravimetry turbidimetry.
Lead Pb 10 µ g/l atomic absorption spectrophotometry 29.
Copper mg/l Cu 2.0 atomic absorption spectrophotometry of notes.
The metal concentrations in these elements be considered as ion concentration in water.
(1) the water must not be corrosive effects.
(2) organochlorinated solvents is tetrachloroethylene (tetrahloretēn) and trichloroethylene (trihloretēn). The limit applies to the sum of these two substances.
(3) the following condition must be satisfied: (nitrātjon (NO3-) concentrations in mg/l)/50 — (nitrite (NO2-) concentration in mg/l)/3 1. ² the concentration of Nitrite after the water treatment must not exceed 0.1 mg/l. (4) threshold applies to each individual pesticide. Aldrin, dieldrin, heptachlor and Heptachlor is 0.030 µ epoxy thresholds is g/l. (5) represents the organic Pesticides insecticides, organic herbicides, organic fungicides, organic matocīd, organic acaricīd not, organic algicīd, organic rodenticides, organic slimicīd, similar substances (including growth regulators), as well as relevant metabolites, degradation and reaction products.
(6) benzo (b) fluoranthene, benzo (k) fluoranthene, benzo (g, h, i) perylene, indeno (1,2,3-c, d) pyrene.
 
II. methods of testing accuracy, precision and detection limit table 2 accuracy accuracy of determination No.
Parameter as a percentage of a percentage of limit p.k.

threshold limit values as a percentage of the limit value 1.
Ammonium ions 10 10 10 2.
Antimony 25 25 25 3.
Arsenic 10 10 10 4.
Benzo (a) pyrene 25 25 25 5.
Benzene 25 25 25 6.
Boron 10 10 10 7.
Cianīdjon (1) 10 10 10 8.
Iron 10 10 10 9.
Mercury 20 10 20 10.
Electrical conductivity 10 10 10 11.
Fluorīdjon on 10 10 10 12.
Hlorīdjon on 10 10 10 13.
Organochlorinated solvents (2) 25 25 10 14.
Chrome 10 10 10 15.
Cadmium 10 10 10 16.
Manganese-10 10 10 17.
Sodium 10 10 10 18.
Nickel 10 10 10 19.
Nitrātjon on 10 10 10 20.
Nitrite in 10 10 10 21.
Oksidējamīb (3) 25 25 10 22.
Pesticides (4) 25 25 25 23.
Pesticides (total) 25 25 25 24.
pH (5) (5) 25.
Polycyclic aromatic hydrocarbons (6) 25 25 25 26.
Selenium 10 10 10 27.
Sulfātjon on 10 10 10 28.
Lead 10 10 10 29.
Copper 10 10 10 notes.
(1) determine the total quantity of cyanide ion in all their forms.
(2) the table in certain precision, accuracy and detection limit applies to each individual chloro solvents 50% at a concentration of 1. values in the table.
(3) the Oxidation is carried out for 10 minutes at 100 ° C with permanganate in acidic media.
(4) methods of testing accuracy, accuracy and limit of detection to be each individual pesticide and will vary depending on the characteristics of pesticides.
(5) the hydrogen ion concentration (pH) used in determining the measurement, which can be determined with the accuracy of the values 0.2 pH unit and a precision of 0.2 pH unit.
(6) the accuracy of the method, accuracy and limit of detection to apply for each individual substance at a concentration of 25% of the value specified in table 1.
Environmental protection and regional development Minister v. Makarova in the