Order of the Minister of Water Resources and Irrigation of the Republic of Kazakhstan "About approval of single system of classification of quality of water in superficial water objects and (or) their parts"

ORDER OF THE MINISTER OF WATER RESOURCES AND IRRIGATION OF THE REPUBLIC OF KAZAKHSTAN

of June 4, 2025 No. 111-HK

About approval of single system of classification of quality of water in superficial water objects and (or) their parts

According to item 4 of article 41 of the Water Code of the Republic of Kazakhstan, Item 2 of article 27 of the Law of the Republic of Kazakhstan "About legal acts" I ORDER:

1. Approve the classifications of quality of water enclosed the Single system in superficial water objects and (or) their parts.

2. Recognize to invalid:

1) the order of the Chairman of Committee on water resources of the Ministry of Agriculture of the Republic of Kazakhstan of November 9, 2016 No. 151 "About approval of single system of classification of quality of water in water objects" (it is registered in the Register of state registration of regulatory legal acts at No. 14513).

2) the order of the Chairman of Committee of water economy of the Ministry of Water Resources and Irrigation of the Republic of Kazakhstan of March 20, 2024 No. 70 "About modification of the order of the Chairman of Committee on water resources of the Ministry of Agriculture of the Republic of Kazakhstan of November 9, 2016 No. 151 "About approval of single system of classification of quality of water in water objects" (it is registered in the Register of state registration of regulatory legal acts at No. 34195).

3. To provide to committee on regulation, protection and use of water resources of the Ministry of Water Resources and Irrigation of the Republic of Kazakhstan in the procedure established by the legislation placement of this order on Internet resource of the Ministry of Water Resources and Irrigation of the Republic of Kazakhstan.

4. To impose control of execution of this order on the supervising vice-Minister of Water Resources and Irrigation of the Republic of Kazakhstan.

5. This order becomes effective since June 10, 2025 and is subject to official publication.

Minister of Water Resources and Irrigation of the Republic of Kazakhstan

N. Nurzhigitov

It is approved

Ministry of Ecology and Natural Resources of the Republic of Kazakhstan

It is approved

Ministry of Health of the Republic of Kazakhstan

Approved by the Order of the Minister of Water Resources and Irrigation of the Republic of Kazakhstan of June 4, 2025 No. 111-HK

Single system of classification of water in superficial water objects and (or) their parts

№	The normalized indicators	Chemical symbol	Unit of measure	Numerical values of the quality standards of waters on quality classes *
№	The normalized indicators	Chemical symbol	Unit of measure	1 class **	2 class **	3 class **	4 class **	5 class **	6 class **
Conditions of the oxygen mode
1	Temperature	Water T	0C	In the summer 20-280C				In the winter 5-80C
2	Dissolved oxygen	O2	O2/l mg	6	4	4	4	4	3
3	Saturation by oxygen	O2	% of saturation of O2/l	> 90%	80%	60%	40%	<40%	20%
4	Biochemical consumption of oxygen (5 days)	BPK5	O2/l mg	2,1	2,1	3,0	5,0	6,0	>6,0
5	Biochemical consumption of oxygen (complete)	Bpkpoln	O2/l mg	3,0	3,0	6,0	7,0	8,0	>8,0
6	Chemical consumption of oxygen (permanganate)	HPK (перм)	O2/l mg	<7,0	7,0	15,0	20,0	20,0	>20,0
7	Chemical consumption of oxygen (bichromated)	HPK (бихр)	O2/l mg	15,0	15,0	30,0	35,0	40,0	>40,0
8	рН			6,5-8,5	6,5-8,5	6,0-9,0	6,0-9,0	6,0-9,0	<6,0->9,0
Organoleptic parameters
9	Smell		point	<2,0	2,0	2,0	4,0	4,0	5,0
10	Chromaticity		degree	<20	20	30	40	80	> 80
11	Transparency		cm	> 20	20	3-10	2,0	2,0	<2,0
12	The weighed substances		mg/l	Sfon. + 0,25	Sfon. + 0,75	Sfon. + 1,0	Sfon. + 5,0	Sfon. + 10,0	> Sfon. 10,0
Mineralization
13	Mineralization general; Amount of ions; Dry remaining balance; Salinity	Минобщ	mg/l	1000	1000	1300	1500	2000	> 2000
14	Specific conductivity		¼¬æ¼/cm	50	500	1000	1500	1500	> 1500
15	Okislitelno recovery potentsial2	OVP1	Eh, mV	400	500	600	700	700	> 700
16	Sulfates	SO42-	mg/l	<100	100	500	600	1500	> 1500
17	Chlorides	Cl-	mg/l	300	350	350	400	400	> 400
18	Calcium	Ca2 +	mg/l	180	180	170	150	150	180 (150 ***)
19	Magnesium	Mg2 +	mg/l	20,0	20,0	60,0	100,0	100	> 100
20	Sodium	Na +	mg/l	120,0	200,0	200,0	200,0	200,0	>200,0
21	Potassium	K +	mg/l	50,0	50,0	50,0	<100,0	100,0	>100,0
22	Shchelochnost2	HCO3-	CaCO3/l mg	<40,0	40, 0-<50,0	50, 0-<100,0	100, 0-<200,0	200,0	> 200
23	Zhestkost3		мг-Ý¬ó/l	<4,0	6	9	10	13	15
24	Carbon dioxide	CO2	mg/l	0,2	0,4	1,0	2,0	3,0	4,0
Biogenic substances
25	General nitrogen	Nobshch	N/l mg	1,5	4,0	8,0	20,0	20,0	>20,0
26	Nitrate ion	NO3-	mg/l	40,0	40,0	45,0	45,0	45,0	>45,0
27	Nitrite ion	NO2-	mg/l	0,1	3,3	3,3	3,3	5,0	>5,0
28	Ammonium ion	NH4 +	mg/l	0,5	0,5	1,0	2,0	2,6	>2,6
29	Ammonia	NH3 · nH2O	mg/l	0,05	0,05	0,10	0,20	0,26	>0,26
30	Ammonia on nitrogen		mg/l	<2,0	2,0	2,0	2,3	2,7	>2,7
31	Phosphorus general	Робщ	mg of Rl	0,1	0,2	0,4	1,0	1,0	>1,0
32	Phosphates	RO43-	mg/l	0,2	0,4	0,7 (3,5) ****	1,0	3,5	>3,5
33	Phosphorus trichloride	PCl3	mg/l	0,01	0,01	0,25	0,60	>0,60	>0,60
34	Boron	In	mg/l	0,5	0,5	0,7	1,3	2,0	>2,0
35	Silicon	Si	mg/l	10,0	10,0	12,0	12,0	12,0	>12,0
Metals
36	Aluminum	Al	mg/l	0,04	0,04	0,50	0,50	0,50	>0,50
37	Beryllium	Ве	mg/l	0,0001	0,0002	0,0002	0,002	0,004	>0,004
38	Iron general	Feobshch	mg/l	0,1	0,1	0,3	0,5	0,5	>0,5
	Iron (2+)	Fe2 +	mg/l	0,005	0,005	0,01	0,02	0,02	>0,02
	Iron (3+)	Fe3 +	mg/l	0,01	0,01	0,02	0,04	0,05	>0,05
39	Manganese (2+)	Mn2 +	mg/l	0,01	0,01	0,10	0,20	0,30	>0,30
40	Cadmium general	Cdobshch	mg/l	0,005	0,005	0,025	0,125	0,125	>0,125
40	Cadmium dissolved	Cdrast	mg/l	0,001	0,001	0,005	0,025	0,025	>0,025
41	Lead general	Pbobshch	mg/l	0,12	0,60	0,60	1,00	1,00	>1,00
41	Lead dissolved	Pbrast	mg/l	0,006	0,03	0,03	0,05	0,05	>0,05
41	Mercury general	Hgobshch	mg/l	0,0001	0,0005	0,001	0,001	0,001	>0,001
41	Mercury dissolved	Hgrast	mg/l	0,00002	0,0001	0,0002	0,0002	0,0002	>0,0002
43	Nickel general	Niobshch	mg/l	0,01	0,025	0,05	0,10	0,10	>0,10
43	Nickel dissolved	Nirast	mg/l	0,008	0,020	0,04	0,08	0,08	>0,08
44	Copper general	Cuobshch	mg/l	0,002	0,002	2,0	2,0	2,4	>2,4
44	Copper dissolved	Curast	mg/l	0,001	0,001	1,0	1,0	1,2	>1,2
45	Zinc general	Znobshch	mg/l	0,04	0,04	0,04	0,12	0,20	>0,20
45	Zinc dissolved	Znrast	mg/l	0,01	0,01	0,01	0,03	0,05	>0,05
46	Cobalt general	Soobshch	mg/l	0,01	0,01	0,1	0,1	0,1	>0,1
46	Cobalt dissolved	Sorast	mg/l	0,005	0,005	0,05	0,05	0,05	>0,05
47	Molybdenum general	Мообщ	mg/l	0,002	0,002	0,0040	0,0050	0,0050	>0,0050
47	Molybdenum dissolved	Мораст	mg/l	0,001	0,001	0,0020	0,0025	0,0025	>0,0025
48	Chrome general	Srobshch	mg/l	0,1	0,1	0,55	0,55	0,55	>0,55
	Chrome (3+)	Cr3 +	mg/l	0,07	0,07	0,15	0,15	0,30	>0,30
	Chrome (6+)	Cr6 +	mg/l	0,02	0,02	0,05	0,10	0,25	>0,25
Organic substances
49	Phenols (flying)	-	mg/l	0,001	0,001	0,001	0,002	0,005	>0,005
50	Phenols	-	mg/l	0,001	0,001	0,005	0,10	0,10	>0,10
51	Oil products	-	mg/l	0,05	0,05	0,10	0,20	0,30	>0,30
52	Oil and oil products in the dissolved and emulsified condition	-	mg/l	0,05	0,05	0,10	0,50	1,0	>1,0
53	HAVING FALLEN DOWN, SURFACTANT, ASPAV	-	mg/l	0,1	0,1	0,5	0,5	0,7	>0,7
54	Fluorides	F-	mg/l	0,75	0,75	1,5	2,0	2,1	>2,1
55	Hydrogen sulfide	H2S	mg/l	0,003	0,003	0,003	0,003	0,003	>0,003
56	PAU and their metabolites (on бенз (and) to pyrene) 4	-	mg/l	0,00001	0,00001	0,00001	0,00001	0,00001	>0,00001
Toxic agents
57	Cyanides	CN-	mg/l	0,03	0,035	0,035	0,05	0,10	>0,10
58	Arsenic general	As	mg/l	0,05	0,05	0,08	0,10	0,10	>0,10
58	Arsenic dissolved	-	-	0,002	0,002	0,04	0,05	0,05	>0,05
59	Rhodanates	SCN-	mg/l	0,10	0,10	0,10	0,15	0,20	>0,20
Pesticides
60	gamma GHTsG (lindane)	-	mg/l	0,00001	0,00001	0,0001	0,0002	0,0003	>0,0003
61	1, 2, 3, 4, 5, 6 - Geksakhlortsiklo-geksan5	-	mg/l	0,00001	0,00001	0,00001	0,00001	0,00001	>0,00001
62	DDT (amount of isomers) 6	-	mg/l	0,000025	0,000050	0,000065	0,000075	0,000075	>0,000075
Hydrobiological parameters
63	On phytoplankton, to zooplankton, perifiton Saprobity index across Paltla and Bukk (in Sladechek's modification)	-	-	<1,0	1,00- 1,50	1,51- 2,50	2,51- 3,50	3,51- 4,00	> 4,00
64	On zoobenthos:	-	%	1-20	21-35	36-50	51-65	66-85	86-100 or the macrobenthos is absent
	- the relation of total number oligokht to the total number of ground organisms
	- biotic index on Vudivissa	-	points	10	7-9	5-6	4	2-3	0-1
Microbiological parameters
65	Laktozopolozhitelny colibacilli	LKA	in dm3	1000	1000	1000	5000	5000	> 5000-<5500
66	Kolya-fagi	-	plaque-forming pieces.	отс.	отс.	<100	100	100	> 100-<120
67	Causative agents of diseases	-		отс.	отс.	отс.	отс.	traces	traces
68	Total quantity of bacteria	-	106 C/cm 3, C/ml	<0,5	0,5-1,0	1,1-3,0	3,1-5,0	5,1-10,0	>10,0-<<10,5
69	Quantity of saprophytic bacteria	-	103 C/cm3 C/ml	<0,5	0,5-5,0	5,1-10,0	10,1-50,0	50,1-100	> 100-<120
70	Attitude of total quantity of bacteria towards quantity of saprophytic bacteria	-		<103	> 103	103-102	<102	<102	<102

Note:

* The single system of classification of quality of water in water objects (further – classification) is divided into six classes of water use with gradual transition from the 1st class of waters of "the best quality" to the 6th class of "the worst quality". The provided numerical values of quality of waters are used for quality evaluation of waters in the rivers, canals, river-bed water storage basins and do not extend for the seas and lakes, including the Caspian Sea, the Aral Sea, the lake Balkash.

** Each class of water use is characterized by the category of water use depending on the created ecological potential of water object. The characteristic of categories of water use is provided in table 1 to this single classification. Differentiation of classes of water use on categories (types) of water use is given in table 2 to this classification.

*** 150 mg/l extend to content of calcium when using water in the industrial purposes (risk of scaling in industrial plants).

**** for indicators of surface water in city boundaries Astana

Table 1

Characteristic of classes of water use

№

Class of quality of waters

Characteristic of categories of water use

1 class

(very high quality)

Surface water in which there are no changes (or they are very small) physical and chemical and biological values of quality. Concentration of pollutants do not influence functioning of water ecosystems and do not do harm to health of the person.

Surface water of this class is intended for all types (categories) of water use.

2 class

(high quality)

Surface water which in insignificant degree is mentioned by human activities and are suitable for all types (categories) of water use.

For use for the purpose of economic and drinking appointment methods of simple water treatment are required.

3 class

(moderately contaminated)

Surface water which physical and chemical and biological values are moderately rejected from natural background of quality of water because of human activities. Moderate signs of violation of functioning of ecosystem are registered.

It is undesirable to use waters of this class of water use for cultivation of salmons, and for their use for the purpose of economic and drinking appointment more effective methods of cleaning are required. Types of this class are suitable for all other categories of water use (recreation, irrigation, the industry) without restriction.

4 class

(contaminated)

Surface water testifies to considerable variations of physical and chemical and biological values of quality of water from natural background because of human activities.

Waters of this class of water use are suitable only for irrigation and industrial water use, including hydropower, mining, hydrotransport. Use of waters of this class of water use for economic and drinking water use requires intense (deep) training of waters on water intakes. Waters of this class of water use are not recommended for the recreation purposes.

5 class

(very contaminated)

Surface water which testifies to considerable variations of physical and chemical and biological values of quality from natural background of quality of water because of human activities.

Waters of this class are suitable for use only for the purpose of industrial water use and irrigations in case of application of methods of upholding in cards of upholding are more whole.

6 class

(highly contaminated)

Surface water, has considerable variations on number of the normalized indicators of quality of waters because of constant anthropogenous load.

Waters of this class are suitable for use only for the purposes of hydropower, water transport, in processes of mining which do not require observance of standard rates of quality of waters.

For other purposes of water of this class of water use are not recommended.

Note:

The surface water of 1 class of water use used, only, for the drinking purposes and also surface water of 2 and 3 classes of water use which are suitable for use for the purpose of economic and drinking water supply on organoleptic, sanitary and chemical and microbiological indicators shall correspond to the Hygienic standard rates of indicators of safety of economic and drinking and cultural and community water use (further – the Standard rate) approved by the order of the Minister of Health of the Republic of Kazakhstan of November 24, 2022 No. KR DSM-138 (it is registered in the Register of state registration of regulatory legal acts at No. 30713).

In case of sewage treatment, and also water use class waters 4 and 5 to indicators of Standard rates and the order of the Minister of Health of the Republic of Kazakhstan of May 16, 2022 No. KR DSM-44 "About approval of Health regulations "Sanitary and epidemiologic requirements to the organization and holding sanitary and anti-epidemic and sanitary and preventive actions for the prevention of parasitic diseases" (it is registered in the Register of state registration of regulatory legal acts at No. 28086) these waters are suitable for use in irrigation.

Table 2

Differentiation of classes of water use on categories (types) of water use

Category of water use	Cleaning appointment/type	Water use classes
Category of water use	Cleaning appointment/type	1 class	2 class	3 class	4 class	5 class	6 class
Functioning of water ecosystems	-	+	+	-	-	-	-
Fish breeding/protection of fish fauna	Salmon	+	+	-	-	-	-
Fish breeding/protection of fish fauna	Cyprinid	+	+	+	-	-	-
Economic and drinking water supply and water supply of the companies of the food industry	Simple processing	+	+	-	-	-	-
	Normal processing	+	+	+	-	-	-
	Intensive processing	+	+	+	-	-	-
Cultural and community water use	Tourism, sport, rest, bathing	+	+	+	-	-	-
Irrigation	Without preparation	+	+	+	+	-	-
Irrigation	When using cards of upholding	+	+	+	+	+	-
Industrial water use	Engineering procedures, chilling processes	+	+	+	+	+	-
Hydropower	-	+	+	+	+	+	+
Water transport	-	+	+	+	+	+	+
Mining	-	+	+	+	+	+	+

Main reducings

oC	degree Celsius
O2/l mg	oxygen milligram on liter
% of saturation of O2/l	percent of saturation of oxygen on liter
%	percent
cm	centimeter
mg/l	milligram on liter
¼¬æ¼/cm	micro Siemens on centimeter
Eh, mV	the measure of capability of chemical to attach electrons, millivolt
CaCO3/l mg	calcium carbonate milligram on liter
мг-Ý¬ó/l	milligram-equivalent on liter
N/l mg	milligram of general nitrogen on liter
mg of Rl	milligram of phosphorus of general on liter
C/cm 3,	kiloliter on centimeter cubic
C/ml	kiloliter on milliliter
dm3	decimeter cubic
Sfon	concentration background
HAVING FALLEN DOWN	Synthetic surfactants
SURFACTANT	Surfactants
ASPAV	Anion synthetic surfactants
PAU	Polycyclic aromatic hydrocarbons
	it is less or equally
	it is more or equally
<	it is less
>	it is more

Disclaimer! This text was translated by AI translator and is not a valid juridical document. No warranty. No claim. More info

Effectively work with search system

Database include more 50000 documents. You can find needed documents using search system. For effective work you can mix any on documents parameters: country, documents type, date range, teams or tags.
More about search system

Get help

If you cannot find the required document, or you do not know where to begin, go to Help section.

In this section, we’ve tried to describe in detail the features and capabilities of the system, as well as the most effective techniques for working with the database.

You also may open the section Frequently asked questions. This section provides answers to questions set by users.