Drinking water quality requirements

Drinking water for human consumption must meet the following hygienic requirements: it must be safe in terms of epidemics and radiation, and have favorable organoleptic properties and a harmless chemical composition. For the production of drinking water, preference should be given to water from underground sources of drinking water supply to the population, reliably protected from biological, chemical and radiation contamination.

Hygienic assessment of drinking water safety and quality is performed according to epidemic safety indicators (microbiological, parasitic), sanitary and chemical (organoleptic, physico-chemical, sanitary and toxicological) and radiation indicators, listed in supplements 1-3.

When selecting a water source and a water treatment technology in the case of construction or reconstruction of a drinking water supply facility, priority should be given to sources and technologies which will ensure the production of drinking water with an optimum mineral content according to the indicators of the physiological fullness of the mineral composition of drinking water (Appendix 4).

Appendix 1
to State Sanitary Norms and Rules of GSanPiN 2.2.4-171-10
“Hygienic requirements for drinking water intended for human consumption”

Indicators of epidemic safety of drinking water

Indicator names

Unit of measure

Standards for drinking water
GSanPiN 2.2.4-171-10

tap water, from bottling points and water tanks

from wells and drip springs

Total microbial count

at t = 37 °C – 24 hours*

water treatment

Total microbial count

at t = 22°C – 72 hours

presence in 1 dm3

Enteroviruses, adenoviruses, antigens of rotaviruses, reovirus, hepatitis A virus and others

Availability in 10 dm 3

Intestinal pathogens the simplest: Cryptosporidium cysts, isospores, giardia cysts, dysentery amebas, intestinal balanceidium and others

cells, eggs, larvae, in 50 dm3

Note:
The examination of drinking water from surface water sources or ground water according to the indicators stipulated in paragraphs 7 and 9 shall be carried out if total coliforms are detected in two sequentially taken water samples, E.coliforms, enterococci or coliphages (p.п. 3, 4, 5 and 8), and the testing of drinking water from underground artesian aquifers and interbedded non-pressurized aquifers for the indicators stipulated by paras. 7, 8 and 9, are carried out in case of detection in two consecutive water samples of total coliforms, E.coliforms or enterococci (ppm). 3, 4, 5). The tests are performed for water samples containing pathogens of viral aetiology if coliforms are identified in the samples, and for water samples containing pathogens of bacterial aetiology if total coliforms, E.coli or enterococci. Total coliforms and enterococci are tested in three volumes of 100 cm 3 .

Appendix 2
to State Sanitary Norms and Rules GSanPiN 2.2.4-171-10
“Hygienic requirements for drinking water intended for human consumption.”

Sanitary and chemical safety indicators and quality of drinking water

Name of indicators

Unit of measure

Standards for drinking water according to
Sanitary Regulations of the corresponding administrative territory 0,2-0,3.2.4-171-10

tap water

from wells and drop tanks, springs

Packaged, from bottling stations and water tanks

a nephelometric turbidity unit (1 NEM = 0,58 mg/dm 3 )

– For underground source

Water Quality Standard | Water Quality Standard of Drinking Water | Environmental Pollution & Contro

0,2-0,3 for weakly carbonated

0,31-0,4 for medium-carbonated

>0.4 for strong-gas

Polyphosphates (by RO 4 3- )

Free residual chlorine

Bound residual chlorine

for climatic zones:

For climate zones:

* Hazard Class I substances.
** Substances of the II class of hazard.
1 Standard, marked in brackets, is established in some cases in agreement with the chief state sanitary inspector of the corresponding administrative territory.
2 The standard in brackets is established for drinking water treated with chemicals which contain aluminum.
3 The standard indicated in parentheses is for treated drinking water.
4 The norm, marked in brackets, is set for carbonated drinking water, drinking water from bottling points and bureaus.
5 pH for carbonated drinking water.
6 The standard is set only for drinking water packaged with. For drinking water from bottling points and water tanks the standard is established for climatic zones.
7 Standard, marked in brackets, is established for non-carbonated drinking water.

Notes:
1. In tap drinking water are determined:

chloroform – if drinking water from surface water sources;

free and bound chlorine, ozone, polyacrylamide – if the relevant reagents are used during water treatment;

formaldehyde – in case of ozonation during water treatment;

Chlorine dioxide and chlorites – in case of treatment with chlorine dioxide during water treatment.

2. Drinking water bottled, from bottling points and water tanks are defined:

Drinking water quality standards

chloroform – if water is chlorinated in the process of water treatment or chlorinated source water is used;

formaldehyde – if water is ozonized during the water treatment process or if ozonized source water is used;

silver and carbon dioxide – if the water treatment process uses the appropriate reagents or substances;

polyacrylamide – if tap drinking water from a surface source of drinking water is used in the water treatment process.

Sanitary and chemical safety and quality parameters of drinking water

Indicators

Unit of measure

Standards for drinking water

(GosanPiN 2.2.4-171-10)

tap water

bottling points

from wells and springs

Packed, from bottling points and water tanks

Surface active substances anionic

Pesticides 1, 3 (total)

Trihalogenmethanes 4 (amount)

* I class substances.

** Substances of Hazard Class II.

1 Pesticides include organic insecticides, organic herbicides, organic fungicides, organic nematocides, organic acaricides, organic algicides, organic rodenticides, organic slimicides, related products (among them growth regulators) and their metabolites, reaction and degradation products. The list of pesticides to be determined in drinking water shall be established on a case-by-case basis and shall include only those pesticides that may be present in the drinking water supply.

2 Standard for each individual pesticide. If aldrin, dieldrin, heptachloride and heptachloropoxide are present in a drinking water source, their content in drinking water should be no more than 0.03 µg/dm 3 for each of these substances.

3 The sum of pesticides is defined as the sum of the concentrations of each individual pesticide.

4 The sum of the trihalogenmethanes is defined as the sum of the concentrations of chloroform, bromoform, dibromichloromethane, and bromodichloromethane.

Trihalogen methanes and dibromochloromethane are determined in tap drinking water from surface water sources, as well as in packaged drinking water, from bottling points and water tanks, if the water is chlorinated in the water treatment process or if chlorinated source water is used.

Sanitary and chemical safety and quality parameters of drinking water

Table 3 (Introduced in 2020).)

Indicator name

Measurement unit

Standards for drinking water

(SanPiN 2.2.4-171-10)

tap water

from wells and springs

Packaged, from bottling points and bureaus

Total organic carbon

* Hazard class I substances.

** Substances of the II class of hazard.

*** Not determined at drinking water supply plants with drinking water production volume less than 10 000 m3 per day.

1. 1,2 – dichloroethane, tetrachlorocarbon, trichloroethylene and tetrachloroethylene (sum) are determined in tap drinking water from surface water sources as well as in bottled drinking water, from bottling points and water tanks – if water is chlorinated during water treatment or if chlorinated source water is used.

2. Total organic carbon can be determined instead of permanganate oxidation.

Supplement 3

to the State Sanitary Norms and Rules GSanPiN 2.2.4-171-10
“Hygienic requirements for drinking water intended for human consumption”

Indexes of specific alpha- and beta-activity of potable water

Indicator name

Measurement unit

Radiation safety parameters of drinking water

Total activity of the natural mixture of isotopes U

Specific activity 226 Ra

Specific activity 228 Ra

Specific activity 222 Rn

water tanks

Specific activity of 137 Cs

Specific activity 90 Sr

Supplement 4

State Sanitary Norms and Rules GSanPiN 2.2.4-171-10
“Hygienic requirements for drinking water intended for human consumption”

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