Order of the Government of the Czech Socialist Republic No. 25 / 1975 Coll.
Decree of the Government of the Czech Socialist Republic setting out the parameters for the permissible degree of water pollution
Valid
Effective from 01.04.1975
25
GOVERNMENT REGULATION
Czech Socialist Republic
of 26 March 1975
establishing the parameters for the permissible degree of water pollution
The Government of the Czech Socialist Republic provides pursuant to § 23 paragraph 2 of Act No. 138 / 1973 Coll., on Water (Water Act):
(1) The indicators for the permissible level of pollution of surface water (hereinafter referred to as "the indicators"), as set out in the Annex to this Regulation, are binding on the water authorities when authorising discharges of waste and special waters into surface water; In serious cases, in particular in order to protect the environment and, where appropriate, other important interests of the company, water authorities shall, when authorising discharges of waste and specific waters into surface water for each water stream, or parts thereof which are not declared to be water flows, use more stringent values up to the levels laid down for water flows.
(2) Where the water authority authorises, in the light of an important interest of the company, exceptionally discharges of waste water or special waters into groundwater, the discharges must be cleaned or adjusted in order not to deteriorate or jeopardise the quality of groundwater water.
(1) The indicators refer to the quantity of substances in the receiving substance after mixing with waste or special waters. The effect of effluent effluent or specific water on water in the recipient shall be measured by converting from the water values into the recipient ratio by considering the actual volume of water in the recipient, which is replaced by 355day flow rate for water flows. In artificially airborne sections of water courses (water tanks, etc.), this flow rate is determined in the profile where the water discharge from the air section occurs.
(2) The test shall be carried out by analysing the water quality of the receiving water according to the technical standards for conducting analyses for determining the degree of contamination of surface water (1). In order to determine the water quality in the flow, the results of measurements performed at 355day flow rates are primarily decisive.
(3) The indicators established for water flows must be observed at any point in these flows. The indicators laid down for other surface waters shall be complied with at locations designated by the water management authority in relation to the authorisation of discharges of waste or special waters; is based on current and planned water management. For sedimentation tanks and other similar equipment intended for cleaning, accumulation or other management of waste or special waters, only the effluent points from those facilities shall be observed.
(4) If the surface water quality is already worse than that of an indicator, its further pollution by waste water or, where appropriate, by specific waters in that indicator is not acceptable.
(1) Directive 74 / 1957 / EC of the Central Water Management Authority of the European Parliament and of the Council on the quality of surface water in recipients is hereby repealed.
(2) The exemptions allowed under Article 6 of the Directives No 74 / 1957 Ú. l., on the quality of surface water in recipients and under Article 9 of Act No 11 / 1955 Coll., on water management, as amended by Act No 12 / 1959 Coll., remain in force for the period for which they have been established.
This Regulation shall enter into force on 1 April 1975.
Korcák v. r.
Annex to Government Order No. 25 / 1975 Coll.
Indicators
permissible levels of surface water pollution
I. Basic indicators which, when authorising discharges of waste or special waters into surface water, must not be broken or exceeded:
1. the biological status of waters, expressed in terms of pollution index (sapropids) of less than 2,2 for water streams and the biological status of waters, expressed in terms of pollution index (sapropids) of less than 3,2 for other surface waters;
2. the normal life of trout fish in watercourses and caprovers in other surface waters;
3. the odourless state of the waters of the watercourses and tanks and the weakly foreign waters;
4. a condition in which the colour changes are not apparent in the waters of the watercourses in the layer up to 20 cm, in other surface waters up to 10 cm;
5. a temperature up to 20 ° C for trout and water streams and up to 26 ° C for other surface waters;
6. intact self-cleaning capacity of surface water;
7. the state of surface water in which there is no excessive development of undesirable organisms (e.g. water bloom), or the formation of sludge benches or cover of water levels with foam, fats and oils or other substances;
8. the state of surface water in which health protection requirements for ionising radiation are not infringed; 2)
9. The state of surface water in which radioactive and other substances are not toxic to aquatic organisms.
II. Indicators of the permissible quantity of substances contained in surface water:
| hodnoty platné ve vodárenských tocích | hodnoty platné v ostatních povrchových vodách | poznámka | ||
|---|---|---|---|---|
| 1. | rozpuštěný kyslík (nasycení v %) | min. 70 | min. 50 | vylučují se rozbory nočních a ranních vzorků |
| 2. | BSK5 mg O2/l | max. 4 | max. 8 | |
| 3. | oxidovatelnost manganistanem mg O2/l | max. 8 | max. 20 | s vyloučením vlivu přirozených huminových látek |
| 4. | volný sirovodík (H2S) mg/l | max. 0 | max. 0,1 | |
| 5. | rozpuštěné látky mg/l | max. 500 | max. 1000 | |
| 6. | chloridové ionty (Cl) mg/l | max. 200 | max. 400 | |
| 7. | síranové ionty (SO4) mg/l | max. 200 | max. 300 | |
| 8. | vápníkové ionty (Ca) mg/l | max. 250 | max. 300 | |
| 9. | hořčíkové ionty (Mg) mg/l | max. 125 | max. 200 | |
| 10. | celková tvrdost (ºN) | max. 20 | max. 46 | |
| 11. | fluoridy (F) mg/l | max. 1,5 | max. 2,4 | |
| 12. | amoniak a amonné ionty (NH4 + ) mg/l | max. 0,5 | max. 3,— | ve vodárenských tocích nesmí být volný amoniak vůbec |
| 13. | dusičnanové ionty (NO3) mg/l | max. 15 | max. 50 | |
| 14. | celkové železo (Fe) mg/l | max. 0,5 | max. 1,5 | |
| 15. | mangan (Mn) mg/l | max. 0,2 | max. 0,5 | |
| 16. | fenoly jednomocné (těkající s vodní parou) mg/l | max. 0,05 | max. 0,2 | |
| 17. | anionaktivní tenzidy mg/l | max. 0,1 | max. 3,— | |
| 18. | ostatní tenzidy s výjimkou kationaktivních mg/l | max. 0,5 | max. 3,— | |
| 19. | kyanidové ionty (CN) mg/l | max. 0,01 | max. 0,2 | celkových |
| max. 0,05 | toxických | |||
| 20. | zinek (Zn) mg/l | max. 0,05 | max. 0,1 | kromě přirozeně tvrdých vod |
| 21. | nikl (Ni) mg/l | max. 0,05 | max. 0,1 | |
| 22. | olovo (Pb) mg/l | max. 0,05 | max. 0,5 | |
| 23. | chrom (CrIII) mg/l | max. 0,1 | max. 0,5 | |
| 24. | arsen (As) mg/l | max. 0,05 | max. 0,5 | |
| 25. | měď (Cu) mg/l | max. 0,05 | max. 0,1 | |
| 26. | selen (Se) mg/l | max. 0,05 | max. 0,1 | |
| 27. | rtuť (Hg) mg/l | max. 0,0001 | max. 0,005 | |
| 28. | kadmium (Cd) mg/l | max. 0,01 | max. 0,3 | |
| 29. | chrom (CrVI) mg/l | max. 0,05 | max. 0,1 | |
| 30. | stříbro (Ag) mg/l | max. 0,01 | max. 0,05 | |
| 31. | vanadium (V) mg/l | max. 0,005 | max. 0,05 | |
| 32. | uran (U) mg/l | max. 0,05 | max. 0,1 | |
| 33. | ropa a ropné látky3) mg/l | max. 0,01 | max. 0,2 | stanovené jako nepolární extrahované látky |
| 34. | coli-index v 1 litru vody | max. 80 000 | max. 600 000 | v místech pásma hygienické ochrany I. stupně nejvýše 10 000 |
| 35. | pH | 6,0 - 8,5 | 5,0 - 9,0 | s výjimkou přirozeně kyselých a zásaditých vod |
In items 20 to 32, the maximum permissible concentration of toxic metals refers to the sum of the dissolved and undissolved forms of the individual substance.
1) Until technical standards are adopted, "Uniform methods of chemical analysis of waters," "Uniform methods of biological analysis of waters I and II" and "Methods of microbiological analysis of waters" shall be used.
2) Decree No. 59 / 1972 Coll., on the protection of health against ionising radiation.
3) Decree No. 35 / 1972 Coll., on the protection of waters from pollution by petroleum substances.
Sign in for notes, favorites and notifications
Regulation Information
| Citation | Decree of the Government of the Czech Socialist Republic No. 25 / 1975 Coll., establishing the parameters of the permissible degree of water pollution |
|---|---|
| Regulation Type | - |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 28.03.1975 |
|---|---|
| Effective from | 01.04.1975 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
Comments 0