Cabinet of Ministers Regulations No. 857 in 2004 (19 October. No 60 9. §) rules on underground water resources and identifying quality criteria have been issued in accordance with the water management act article 5 the seventh and tenth parts 2 and 3 point i. General questions 1. determines: 1.1. identification of underground water resources;
1.2. procedure for the determination of the impact of anthropogenic activities on the underground ūdensobjekt;
1.3. the underground ūdensobjekt for classes and ground water of the good and bad chemical quality criteria. 2. Preparation of the river basin management plan (management plan) and the programme of measures to achieve the management plan under certain environmental quality objectives (environmental quality objectives), Geology Department of State territorial units — River basin management (Administration): identify the underground water resources, study the impact of anthropogenic activities on the ground and assess ūdensobjekt underground ūdensobjekt quality and quantitative. 3. State and local government bodies at the request of Governments provide them with the information needed to identify underground water resources, determine the anthropogenic load and evaluate the quality of the underground ūdensobjekt and quantitative. II. identification of underground water resources and determination of anthropogenic loads 4. Administration prepares the ground for the original characteristics of the ūdensobjekt to determine the geological and hidroģeoloģisko conditions, limits, uses and relation with surface water or land ecosystems. 5. Preparing the underground ūdensobjekt the original characteristics, management uses the monitoring data and other data on hydrogeological conditions, soil characteristics, groundwater abstraction and discharge of waste water, as well as information on land use types in the relevant river basin district. Preparing the underground ūdensobjekt the original characteristics, determine: a geological borders ūdensobjekt 5.1 plan and cuts;
5.2. the geological, hidroģeoloģisko ūdensobjekt and hidrodinamisko conditions (such as groundwater flow direction of watersheds and water balance, an underground water basin natural or artificial recharge sources leak areas, protection against pollution);
5.3. the aeration zone in the area; the underground ūdensobjekt
5.4. loads of anthropogenic impact on the General ground of ūdensobjekt (such as point and diffuse sources of pollution affecting the underground ūdensobjekt underground ūdensobjekt water use, groundwater level lowering or raising the artificial). 6. After the initial preparation of the regulatory characteristics determine the underground ūdensobjekt, taking into account the groundwater horizon boundary plan and cut and their attraction to the surface ūdensobjekt. 7. the Administration establishes the underground ūdensobjekt according to the following criteria: 7.1. underground geological structure of ūdensobjekt, and hydrodynamic conditions hydrogeological characteristics;
7.2. groundwater quality;
7.3. the anthropogenic influence on groundwater quantitative status and its chemical quality;
7.4. the underground water resources in the water supplies of the population;
7.5. the underground water connection with horizon surface ecosystems. 8. If the initial characteristics of underground ūdensobjekt, as well as assessment of anthropogenic activities results show that environmental quality objectives or measures to be necessary is a further breakdown of the underground ūdensobjekt, originally set to be distributed in underground ūdensobjekt apakšobjekto. The underground water of the subobject to be broken down into the following criteria: 8.1 ūdensobjekt parts, that the geologic structure of the hydrogeological and hydrodynamic characteristics of the circumstances differ from the characteristics of the rest of the underground ūdensobjekt;
8.2. ūdensobjekt of the parts found in the natural hidroķīmisk abnormalities;
8.3. ūdensobjekt parts, which are essential for water supply;
8.4. ūdensobjekt parts, in which experiencing intensive change due to anthropogenic activities. 9. Underground ūdensobjekt and subobject are stated on the relevant management plan. Management can change the distribution of underground ūdensobjekt when updated management plan. 10. on the basis of the results of the initial characteristics, management identifies the underground ūdensobjekt or subobject that risk does not reach certain environmental quality objectives (hereinafter referred to as a risk ūdensobjekt). If necessary, the risk of ūdensobjekt prepare for their hydrogeological and geological conditions as well as anthropogenic load impact additional characteristics. Anthropogenic load down those underground ūdensobjekt, crossing the Latvian border with another Member of the European Union. 11. In preparing the risk of hydrological and geological ūdensobjekt of additional characteristics, specify: 11.1. risk of geological structure of ūdensobjekt, water distribution, and the type of the horizon, as well as sprostslāņ;
11.2. characteristics of each filtering risk ūdensobjekt water or water horizon horizon complex, natural isolation from surface pollution as well as water replenishment and leak conditions;
11.3. concealed layer of the General characteristics of the territory, which will complement the underground water resources (for example, the thickness of the layers, concealed from view, porosity, permeability and absorption characteristics);
11.4. hydrogeological, risk stratification in one ūdensobjekt;
11.5. terrestrial ecosystems (including terrestrial ecosystems) and surface ūdensobjekt the risk is related to the hydrodynamic ūdensobjekt;
11.6. groundwater flow direction and the exchange rate between the risk of ūdensobjekt and related surface and underground ūdensobjekt;
7.3. the calculation of the average amount by which year will complement the subterranean water resources (uses ground water balance assessment and hidroģeoloģisko models);
11.8. groundwater chemical composition (indicate anthropogenic impact on the composition and concentration of the substance). 12. Preparing the anthropogenic load impact additional characteristics, collect the following information: 12.1. all water sampling sites that day more than average 10 cubic meters of underground water, or from which drinking water is obtained more than 50 people, as well as of the average annual quantity of water in each of these places;
12.2. groundwater chemical composition of natural water abstraction background used for the underground ūdensobjekt and chemical quality of water;
12.3. all points of groundwater artificial supplements, as well as the injected water and chemical composition;
12.4. the ability to absorb pollutants and in soil decomposition (degradation) speed of ground water horizons, as well as land use types in the territory from which to replenish ground water resources;
12.5. actions that affect the underground water resources in the natural complementarity;
12.6. pollutant concentration change trends over a longer period of time. 13. on the basis of more characterization and assessment of anthropogenic activities, management determined that the underground ūdensobjekt River basin management plans of the water management are applicable statutory exceptions to water quality targets or objectives. III. Underground ūdensobjekt classes, and the underground water quality criteria 14. Administration appreciates the underground ūdensobjekt and subobject, comparing data about their condition with criteria that correspond to good or bad ground water chemical quality, as well as good or bad for groundwater quantitative status. If the quality of the underground ūdensobjekt by different criteria comply with various quality classes, the underground ūdensobjekt is divided into a lower quality or quantitative position class. In accordance with the assessment of all underground ūdensobjekt are divided into good quality class or poor quality class. 15. Underground ūdensobjekt quantitative condition is assessed on the basis of the underground water level measurements, as well as using the underground water level of the card or the horizon complexes. On the basis of the monitoring and the results of the initial characteristics, each to determine the underground ūdensobjekt typical groundwater level fluctuations and seasonal trends are analysed, taking into account the average annual rainfall and other factors that affect the ground water level. 16. Underground ūdensobjekt quantitative condition is good, if it meets the following criteria: 16.1. data on ground water level underground in ūdensobjekt shows that the long term annual average observed groundwater abstraction exceeds the available ground water resources;
16.2. the anthropogenic cause of groundwater level changes do not interfere with achieving environmental quality objectives laid down by the underground related surface ūdensobjekto ūdensobjekt, does not impair the surface ūdensobjekt the ecological and chemical quality, and not significantly affect the terrestrial ecosystem, directly related to the underground ūdensobjekt;
16.3. groundwater level change caused by groundwater flow direction is temporary or permanent, only a limited area and not any sālsūdeņ or other intrusions, as well as no evidence of lasting and clearly detectable in groundwater flow reversal in the trend. 17. Underground ūdensobjekt quantitative condition is bad, if:

17.1. the monitoring of underground ūdensobjekt the annual average groundwater level show that the ground water level is dropping and is not related to the amount of rainfall or other natural factors;
17.2. groundwater level changes of surface ūdensobjekt of the aggravated situation;
17.3. groundwater level change caused by groundwater flow direction is prolonged or permanent wide area and cause sālsūdeņ or other intrusions, as well as a sign of enduring and clearly detectable in groundwater flow reversal in the trend. 18. Underground chemical ūdensobjekt quality is good, if it meets the following criteria: 18.1. the chemical composition corresponds to the natural water chemical composition that is specific for a given ūdensobjekt, and concentrations of pollutants do not exceed the environmental quality standards;
18.2. occurs sālsūdeņ or other intrusions in the underground ūdensobjekt or other adverse changes;
18.3. the underground ūdensobjekt the chemical quality does not interfere with achieving environmental quality objectives with underground related surface ūdensobjekto ūdensobjekt, does not impair the surface ūdensobjekt the ecological and chemical quality, and not significantly affect the terrestrial ecosystems, which are directly linked to the underground ūdensobjekt. 19. Underground ūdensobjekt the chemical quality is poor, if the pollution or other anthropogenic load in water due to natural and found concentrations of pollutants exceed the environmental quality standards or chemical quality of representative values. 20. to Government could accurately assess the chemical quality of underground ūdensobjekt, Minister of environment approves groundwater chemical quality representative for the list. The list shall include at least the following: electrical conductivity, pH, ammonium, nitrate and oxygen levels. Another listing of indicators suggest National Geology Department. Taking into account the specific ground or subobject ūdensobjekt features, Environment Minister can approve individual groundwater chemical quality representative for the list. All chemical quality indicators defining background concentrations and determined on the basis of monitoring data from several ūdensobjekt, calculates the quality indicators characterize the mean value. IV. final question 21. Be declared unenforceable in the Cabinet of 10 February 2004, Regulation No 78 "regulations on underground water resources and identifying quality criteria" (Latvian journal, 2004, 25 no). Informative reference to European Union Directive provisions included in the law arising from the European Parliament and of the Council of 23 October 2000, Directive 2000/60/EC establishing a framework for Community action in the field of water policy. Prime Minister i. Emsis Minister of environment r. vējonis