Decree No. 70 / 2018 Coll.
Decree amending Decree No. 252 / 2004 Coll., laying down sanitary requirements for drinking and hot water and the frequency and scope of control of drinking water, as amended
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70
DECLARATION
of 20 April 2018
amending Decree No. 252 / 2004 Coll., laying down the hygiene requirements for drinking and hot water and the frequency and scope of control of drinking water, as amended
The Ministry of Health provides, pursuant to Article 108 (1) of Act No. 258 / 2000 Coll., on the Protection of Public Health and on the Amendment of Certain Related Acts, as amended by Act No. 274 / 2001 Coll., Act No. 320 / 2002 Coll., Act No. 274 / 2003 Coll., Act No. 146 / 2005 Coll., Act No. 444 / 2005 Coll., Act No. 222 / 2006 Coll., Act No. 110 / 2007 Coll., Act No. 151 / 2011 Coll., Act No. 423 / 2013 Coll., Act No. 3, Act No. 267 / 2015 Coll., and Act No. 202 / 2017 Coll. (a) Act No. 110 / 1997 Coll., on Food and Tobacco Products and Amendment, Act No. 151.
Decree No. 252 / 2004 Coll., laying down health requirements for drinking and hot water and the frequency and scope of control of drinking water, as amended by Decree No. 187 / 2005 Coll., Decree No. 293 / 2006 Coll. and Decree No. 83 / 2014 Coll., is amended as follows:
1. Paragraph 1, including footnotes 1 to 3, reads as follows:
This decree implements the relevant provisions of the European Union1) and provides for
(a) the hygiene limits of microbiological, biological, physical, chemical and organoleptic quality indicators of drinking water2), including drinking water packaged 3) and hot water supplied by a utility water pipeline or internal water duct, which are constructively linked to the mixing battery with the drinking water pipeline ("hot water"), as well as hot water produced from an individual source for the personal hygiene of workers;
(b) the extent and frequency of checking compliance with the quality of drinking water; and
(c) the requirements for the quality control methods for drinking water.
1) Council Directive 98 / 83 / EC of 3 November 1998 on the quality of water intended for human consumption. Commission Directive (EU) 2015 / 1787 of 6 October 2015 amending Annexes II and III to Council Directive 98 / 83 / EC on the quality of water intended for human consumption.
2) Paragraph 3 (1) of Act No. 258 / 2000 Coll., on the Protection of Public Health and on the Amendment of Certain Related Acts, as amended by Act No. 274 / 2003 Coll.
3) Decree No. 275 / 2004 Coll., on the quality and health requirements of packaged waters and on how to adapt them, as amended by Decree No. 404 / 2006 Coll. '
2. In Paragraph 2 (g), "1 'is replaced by" 5'.
3. In Article 2, at the end of point (h), the dot is replaced by a comma and the following points (i) to (o) are added:
"(i) raw water - water taken from surface or groundwater water sources for treatment to drinking water,
(j) treated water - raw water after a certain technological degree of treatment,
(k) water treated - water passed through technological processes to achieve the required quality of drinking water, including water which can be supplied as drinking water without any treatment; water treated means also water produced;
(l) water supplied - water entering the distribution network, intended for use as drinking water; water supplied also includes water in the distribution network and water flowing from the tap at the consumer,
(m) danger - any biological, chemical, physical or radiological agent in water or condition which may endanger the health of consumers or water consumers or cause organoleptic water defects; the hazard is also a restriction or total interruption of the supply of water to customers,
(n) control measures - any activity which may be used to prevent or reduce to an acceptable level hazards which cannot be completely excluded by any measure;
(o) corrective action - any action by which the danger can be completely eliminated or significantly reduced. ';
4. footnote 6:
"6) Decree No. 422 / 2016 Coll., on Radiation Protection and Security of Radionuclide Source. '.
5. The following Section 3a is inserted after Section 3, including the title:
Procedure for drawing up and evaluating the results of risk assessments
The risk assessment shall be processed as a document describing the course of the risk analysis of the drinking water supply system and proposing corrective and control measures to address unacceptable risks; the specific procedure for drawing up and evaluating the results of the procedure is laid down in Annex 7 to this Decree. ';
6. Paragraph 4, including the title and footnotes No 7 and 10, reads as follows:
Method of implementation of the monitoring programme
(1) The implementation of the monitoring programme shall include:
(a) checks on the risk activities in the water source protection zone and, where appropriate, on the wider territory concerned, where necessary in order to protect the water source from pollution;
(b) checks on the state of the protection zone, on the construction of the reception facilities, on water treatment plants, on water jams, on service stations and on other related infrastructure of the drinking water supply system, including checks on the security of such premises against the intrusion of unauthorised persons;
(c) checks on the functionality and maintenance status of the technical equipment used for the reception, transport, treatment, disinfection, quality control of drinking water or the measurement of the pressure or quantity of drinking water supplied, as well as for checking the security of operating objects;
(d) measurements recorded in the continuous monitoring process for the control of the quality of raw, treated, treated or supplied water or for the control of water treatment processes; These measurements shall be used if the risk assessment results from the necessary control measures,
(e) the collection and analysis of point samples of raw, treated, treated and supplied water.
(2) The sites, scope and frequency of checks, measurements and withdrawals are determined according to the complexity and vulnerability of the supply system, in particular the stability of the raw water quality, the treatment technology including water disinfection and the results of the risk assessment under this Decree.
(3) Sampling and analysis of raw water samples for classification shall be carried out in accordance with a special Regulation (10). The indication of the source in the operating order also includes the inclusion of raw water in the relevant category according to the Special Regulation (10). For the assessment of the quality of raw water in the context of the risk assessment, the relevant results of the monitoring of the quality of groundwater and surface water carried out for the purpose of the detection of water status pursuant to Act No. 254 / 2001 Coll., on waters, as amended, shall also be used.
(4) Operational analyses containing raw, treated, treated and supplied drinking water to control the production of drinking water shall be carried out in accordance with the water quality control plan during the production of drinking water under the special Regulation (10).
(5) Sampling and analysis of drinking water in order to demonstrate that the treated water at the exit from the plant or the non-treated water before entering the network and the water supplied at the point of compliance with the requirements of Section 8 is safe and complies with all the requirements laid down, is carried out in accordance with Annexes 4 and 5 to this Regulation. The water producer, which also supplies it to consumers, shall carry out a full analysis at a frequency corresponding to the total production of drinking water, including water sold to another operator. If the water manufacturer does not operate any supplied area itself and the water is immediately transmitted from the outlet to another operator, the full analysis shall be carried out only at the outlet of the plant, to the extent that all indicators listed in the table in Part 2 of Annex 5 to this Regulation are present. The water manufacturer shall immediately provide the results of the analysis to the operators of the downstream water pipelines. The operator of the operating water supply line shall only carry out the full analysis of the consumer and shall analyse only the parameters made compulsory for the water supplied in accordance with Part 2 of Annex 5 to this Regulation and other indicators resulting from the risk assessment in the frequency corresponding to the volume of drinking water supplied.
(6) If drinking water is supplied only for part of the year, the frequency of analyses shall be reduced proportionally, but shall not be less than the lowest category of Annex 4 to this Decree.
(7) In addition to the frequency referred to in paragraphs 5 and 6, sampling and analysis of drinking water samples shall be carried out:
(a) from a new part of water7) to be put into service; a new part of the water supply line shall not be considered as fittings and immediately related parts of the pipeline up to 10 m in length to each side of the supply line, the replacement of part of the pipeline up to 15 m in length or the connection of the old and new pipelines to the same length,
(b) in the event of interruption of water supply for more than 24 hours;
(c) prior to the start of seasonal use of the part of the tap or individual drinking water source; for sources with a minimum frequency of analyses and seasonal operations of up to 6 months, operated under § 3 (2) (a) to (d) of the Act, this analysis may be counted against the minimum annual frequency referred to in paragraphs 5 and 6;
(d) after repair of the tap which could affect the quality of the water in the tap.
(8) The analysis referred to in paragraph 7 shall be carried out within the scope of the reduced analysis referred to in Annex 5 to this Decree, extended by the indicators, the content of which may be increased due to those changes in the supply arrangements for drinking water.
(9) For the purpose of applying for the approval of the new operating order for the introduction of a new source of drinking water, water analysis from a new source shall be documented and, where appropriate, water treatment other than disinfection is required, the treatment of the treated water from the technological test of the water treatment plant in those indicators where water treatment or which may be affected by the water treatment applied, in parallel with the analysis of the raw water before water is delivered to the consumer. The purpose of this analysis, which shall not be more than 6 months old, is to demonstrate that the technology proposed is suitable for the treatment of crude water into drinking water and that the parameters of drinking water will be achieved in accordance with this Decree.
(10) Water control used in means of transport shall be carried out within the scope of a shortened analysis, extended by indicators the value of which may be altered by materials with which water comes into contact, or by additional treatment of water, provided that the water is taken from the tap or other drinking water source where the water quality meets the requirements of this Decree and is regularly monitored.
7) Paragraph 2 (1) of Act No. 274 / 2001 Coll., on Water and Sewerage for Public Use and on the amendment of certain laws (Water and Sewerage Act), as amended.
10) Decree No. 428 / 2001 Coll., implementing Act No. 274 / 2001 Coll., on water and sewage for public use and amending certain laws (Water and Sewerage Act), as amended. "
7. In the first sentence of Article 5 (1), the words "at the outlet, at the distribution network and at the consumer 'shall be inserted after the words" drinking water samples', and after the word "control 'the words" pursuant to Article 4 (5)' shall be inserted.
8. In Article 5 (2), the first sentence is replaced by the following: "The consumer sampling points must be chosen in such a way that, for supplied areas supplying more than 5 000 inhabitants, more than 50% of the sampling points are not permanent but changed each year; for supplied areas supplying 5 000 and fewer inhabitants, more than 65% of the sampling points may not be permanent. '
9. Paragraph 5 (3) reads as follows:
"(3) The sampling points for each indicator are set out in Annex 5 to this Regulation. ';
10. in Article 6 (2), "Table A" is replaced by "Annex 4 to this Order."
11. in Article 7, the following paragraph 2 is inserted after paragraph 1:
"(2) Sampling of drinking water for the determination of microbiological parameters shall be carried out in accordance with Table 1 of EN ISO 19458 (757801) Water quality - Sampling for microbiological analysis, according to the purpose of sampling" b '- from the faucet, where the consumer is concerned, or from the purpose of sampling "a' - from the distribution line, where the output from the plant or within the distribution network is mainly from the water jams and, where justified, from the hydrants. Both samples shall include removal of all connected devices and disinfection of the tap or discharge valve, the purpose of sampling" and "in addition include flushing of the tap before sampling."
Paragraphs 2 and 3 shall become paragraphs 3 and 4.
12. in Article 7 (3):
"(3) The methods set out in Section A of Annex 6 to this Decree are laid down for the determination of the values of the microbiological and biological indicators of drinking water and hot water listed in Annexes 1 to 3 to this Regulation. Any analytical methods meeting the requirements set out in Section B of Annex 6 to this Regulation may be used to determine the values of the physical and chemical indicators of drinking and hot water listed in Annexes 1 to 3 to this Regulation. ';
13. in Paragraph 8 (1) of the introductory part of the provision, the words "Annex 1 to this Decree" shall be inserted after the words "waters."
(14) footnotes 8 and 9 shall read:
"8) For example CSN ISO 5667-5 Water quality. Sampling, Part 5: Instructions for the sampling of drinking water from water treatment and water supply networks. EN ISO 5667-3 Water quality. Sampling, Part 3: Instructions for the preservation and handling of samples. ČSN ISO 5667-14 Water quality. Sampling, Part 14: Guidance on the quality assurance of water sampling and handling.
9) Paragraph 2 (1) (f) of Act No. 110 / 1997 Coll., on Food and Tobacco Products and amending and supplementing certain related acts, as amended. "
15. in Article 9 (1) and (2), the word "drinking" shall be inserted after the word "sample."
16. In Article 9, the following paragraph 3 is added:
"(3) Repeated analyses shall not be taken into account in the minimum required sampling frequency set out in Annex 4 to this Regulation. ';
17. Sections 10 and 11 are deleted, including the title.
18. Annex No 1 reads as follows:
"Annex No 1 to Decree No 252 / 2004 Coll.
Microbiological, biological, physical, chemical and organoleptic potable water indicators and their hygiene limits
A. Microbiological and biological indicators
| č. | ukazatel | jednotka | limit | typ limitu | vysvětlivky |
|---|---|---|---|---|---|
| 1 | Clostridium perfringens | KTJ/100 ml | 0 | MH | 1 |
| 2 | intestinální enterokoky | KTJ/100 ml | 0 | NMH | |
| KTJ/250 ml | 0 | NMH | 2 | ||
| 3 | Escherichia coli | KTJ (MPN)/100 ml | 0 | NMH | |
| KTJ (MPN)/250 ml | 0 | NMH | 2 | ||
| 4 | koliformní bakterie | KTJ (MPN)/100 ml | 0 | MH | |
| KTJ (MPN)/250 ml | 0 | MH | 2 | ||
| 5 | mikroskopický obraz - abioseston | % | 5 | MH | 3 |
| 6 | mikroskopický obraz - počet organismů | jedinci/ml | 50 | MH | 3, 4 |
| 7 | mikroskopický obraz - živé organismy | jedinci/ml | 0 | MH | 3, 4, 5 |
| 8 | počty kolonií při 22 °C | KTJ/ml | Bez abnormálních změn | MH | 6 |
| KTJ/ml | 200 | DH | 7 | ||
| KTJ/ml | 100 | NMH | 2 | ||
| 9 | počty kolonií při 36 °C | KTJ/ml | Bez abnormálních změn | MH | 8 |
| KTJ/ml | 40 | DH | 9 | ||
| KTJ/ml | 20 | NMH | 2 | ||
| 10 | Pseudomonas aeruginosa | KTJ/250 ml | 0 | NMH | 2 |
B. Physical, chemical and organoleptic indicators
| č. | ukazatel | zkratka | jednotka | limit | typ limitu | vysvětlivky |
|---|---|---|---|---|---|---|
| 11 | 1,2-dichlorethan | μg/l | 3,0 | NMH | ||
| 12 | akrylamid | μg/l | 0,1 | NMH | 10 | |
| 13 | amonné ionty | NH4+ | mg/l | 0,50 | MH | |
| 14 | antimon | Sb | μg/1 | 5,0 | NMH | |
| 15 | arsen | As | μg/l | 10 | NMH | |
| 16 | barva | mg/l Pt | 20 | MH | ||
| 17 | benzen | μg/l | 1,0 | NMH | ||
| 18 | benzo[a]pyren | BaP | μg/l | 0,01 | NMH | |
| 19 | beryllium | Be | μg/l | 2,0 | NMH | |
| 20 | bor | B | mg/l | 1,0 | NMH | |
| 21 | bromičnany | BrO3- | μg/l | 10 | NMH | 11 |
| 22 | celkový organický uhlík | TOC | mg/l | 5,0 | MH | 12 |
| 23 | dusičnany | NO3- | mg/l | 50 | NMH | 13 |
| 24 | dusitany | NO2- | mg/l | 0,50 | NMH | 13 |
| 25 | epichlorhydrin | μg/l | 0,10 | NMH | 10 | |
| 26 | fluoridy | F- | mg/l | 1,5 | NMH | |
| 27 | hliník | Al | mg/l | 0,20 | MH | |
| 28 | hořčík | Mg | mg/l | 10 | MH | 14 |
| 20-30 | DH | |||||
| 29 | chemická spotřeba kyslíku (manganistanem) | CHSK-Mn | mg/l | 3,0 | MH | 12 |
| 30 | chlor volný | Cl2 | mg/l | 0,3 | MH | 15 |
| 31 | chlorečnany | ClO3- | μg/l | 200 | NMH | 11, 16 |
| 32 | chlorethen (vinylchlorid) | μg/l | 0,50 | NMH | 10 | |
| 33 | chloridy | Cl- | mg/l | 100 | MH | 17, 18 |
| 34 | chloritany | ClO2- | μg/l | 200 | NMH | 11, 16 |
| 35 | chrom | Cr | μg/l | 50 | NMH | |
| 36 | chuť | přijatelná pro odběratele | MH | 19 | ||
| 37 | kadmium | Cd | μg/l | 5,0 | NMH | |
| 38 | konduktivita | k | mS/m | 125 | MH | 18,20 |
| 39 | kyanidy celkové | CN- | mg/l | 0,050 | NMH | |
| 40 | mangan | Mn | mg/l | 0,050 | MH | 21 |
| 41 | měď | Cu | μg/l | 1000 | NMH | 22 |
| 42 | microcystin-LR | μg/l | 1 | NMH | ||
| 43 | nikl | Ni | μg/l | 20 | NMH | 23 |
| 44 | olovo | Pb | μg/l | 10 | NMH | 23 |
| 45 | ozon | O3 | μg/l | 50 | NMH | 18 |
| 46 | pach | přijatelný pro odběratele | MH | 19 | ||
| 47 | pesticidní látky | PL | μg/l | 0,10 | NMH | 24, 25 |
| 48 | pesticidní látky celkem | PLC | μg/l | 0,50 | NMH | 24, 26 |
| 49 | PH | pH | 6,5-9,5 | MH | 18, 28 | |
| 50 | polycyklické aromatické uhlovodíky | PAU | μg/l | 0,10 | NMH | 27 |
| 51 | rtuť | Hg | μg/l | 1,0 | NMH | |
| 52 | selen | Se | μg/l | 10 | NMH | |
| 53 | sírany | SO42- | mg/l | 250 | MH | 18 |
| 54 | sodík | Na | mg/l | 200 | MH | |
| 55 | stříbro | Ag | μg/l | 25 | NMH | |
| 56 | teplota | °C | 8 - 12 | DH | ||
| 57 | tetrachlorethen | PCE | μg/l | 10 | NMH | 29 |
| 58 | trihalomethany | THM | μg/l | 100 | NMH | 30 |
| 59 | trichlorethen | TCE | μg/l | 10 | NMH | 29 |
| 60 | trichlormethan (chloroform) | μg/l | 30 | NMH | 11 | |
| 61 | uran | U | μg/l | 15 | NMH | |
| 62 | vápník | Ca | mg/l | 30 | MH | 14 |
| 40 - 80 | DH | |||||
| 63 | vápník a hořčík | Ca + Mg | mmol/1 | 2 - 3,5 | DH | |
| 64 | zákal | ZF (n) | 5 | MH | 31 | |
| 65 | železo | Fe | mg/l | 0,20 | MH | 32 |
The abbreviations used:
KTJ - colony forming unit using method of determination CSN EN ISO 9308-1
MPN - most likely number of bacteria using the method of determination CSN EN ISO 9308-2
NMH - maximum limit value
MH - limit value
DH - recommended value according to § 3 paragraph 1 of Act No. 258 / 2000 Coll., on the Protection of Public Health and on the amendment of certain related laws, as amended
Explanatory notes:
1. Where the value of this indicator is not complied with, water source and adaptation technology shall be examined to determine whether human health is potentially at risk from the presence of pathogenic micro-organisms, such as cryptosporidium in particular. Article 4 (5) of the Act provides for a responsible person's procedure.
2. Applies only to bottled drinking water.
3. Other information obtained in the microscopic analysis, which may contribute to the interpretation of the results, is an integral part of the test result and is given in the form of a verbal description. This verbal description includes, in particular, the composition of the abioseston present (possibly its possible origin), the closer classification of the organisms present and their possible origin (raw water, network reproduction), their affiliation to difficult to remove groups. In the event of the occurrence of live organisms in waters secured by disinfection, it is always necessary to indicate which organisms were involved. In the case of groundwater, the presence of surface water-bound organisms and organisms indicating impaired water quality shall be recorded. Underground water with the presence of surface water-bound organisms shall be considered as surface water-affected groundwater according to Explanatory Note 1 under Table 1 of Annex 5 to this Decree.
4. For the purposes of this decree, the organisms covered by this indicator are sinuses and all eukaryonic organisms, in particular algae, protozoa, micromycets, swirlers, tubers. Bacteria with the exception of sinuses are given only in the word description, but are not counted in the total number of organisms. A massive finding in the counting chamber of observable bacteria should be considered as exceeding MH indicators 6 or 7 as appropriate. The products of ferric bacteria metabolism are among the asosestone.
5. The limit value shall be determined only for waters secured by disinfection. Live organisms containing chlorophyll are distinguished by the autofluorescence of chlorophyll. Other, if possible, according to other features such as especially movement and state of protoplastic.
6. If it is not possible for a small number of samples to determine if this is an abnormal change for the supplied area, the limit value 200 cfu / ml shall apply.
7. For replacement supplies, for water supplied in air, water and land vehicles and for water from small undisinfected sources producing less than 5 m3 per day, the recommended value shall be up to 500 cfu / ml.
8. If it is not possible for a small number of samples to determine if this is an abnormal change for the supplied area, the limit of 40 cfu / ml shall apply.
9. For replacement supplies, for water supplied in air, water and land vehicles and for water from small undisinfected sources producing less than 5 m3 per day, the recommended value shall be up to 100 cfu / ml.
10. The value shall be valid for the residual concentration of the monomer calculated according to the content and possible release data of materials and articles used for the treatment, manufacture and distribution of drinking water in contact with drinking water.
11. The aim is to achieve the lowest possible value - without reducing the effectiveness of disinfection.
12. No abnormal changes.
13. The condition that the sum of the nitrate content determined in mg / l divided by 50 and the nitrite content determined in mg / l divided by 3 is less than or equal to 1 shall be respected. The sum of ratios corresponds to the highest limit value of its importance. The nitrite content in drinking water at the outlet of the plant shall be less than 0,1 mg / l.
14. Valid as a minimum in the case referred to in Paragraph 3 (1). For all waters, the aim is to achieve the recommended value.
15. The limit value of 0,3 mg / l shall apply to the consumer's sampling points, not to the outlet of the laboratory or to the water heater. In the case of the use of bound active chlorine for disinfection, the total active chlorine shall be the limit value 0,4 mg / l. However, the consumer must not be affected by the acceptability of odour and taste of water.
16. The sum of the concentrations of chlorates and chlorites shall not exceed 200 μg / l.
17. In cases where higher levels of chlorides are caused by geological background, values up to 250 mg / l shall be considered as complying with the requirements of this Decree. For packaged drinking water artificially supplemented with minerals, the limit value 250 mg / l applies.
18. Water should not act aggressively against materials of the distribution system, including home installations. Assessment of aggressiveness is performed according to TNV 75 7121 Water quality. Water quality requirements transported by pipeline.
19. In case of doubt during sensory evaluation, threshold numbers 1 and 2 are considered acceptable when determined according to ČSN EN 1622 Water quality. Determination of the odour threshold number (TON) and taste threshold number (TFN).
20. Measured at 25 ° C.
21. In cases where higher manganese values in the raw water source are caused by a geological environment, the manganese values up to 0,1 mg / l shall be considered to comply with the requirements of this Decree provided that there is no undue influence on the organoleptic properties of the water.
22. The limit applies to a sample of drinking water taken by the corresponding tap sampling method in the consumer so that the sample is representative of the average one-week quantity consumed by the consumer.
23. The limit applies to a sample of drinking water taken by the corresponding tap sampling method in the consumer so that the sample is representative of the average one-week quantity consumed by the consumer.
24. Pesticide substances are organic insecticides, herbicides, fungicides, nematicides, acaricides, algicides, rodenticides, slimicides, related products, including growth regulators, and their relevant metabolites.
25. The limit shall apply to each individual pesticide substance and its relevant metabolite with the exception of aldrin, dieldrin, heptachlor and heptachlor epoxide, where a limit value of 0,03 μg / l applies.
26. The limit applies to the sum of the individual pesticide substances identified and quantitatively identified and their relevant metabolites. If the substance is not quantitatively detected, zero is added to the sum. If the laboratory indicates in the protocol the result of the indicator "Pesticide substances total ', it shall also indicate the results of all specified individual pesticide substances and their relevant metabolites.
27. The limit applies to the sum of quantitatively determined specific substances: benzo [b] fluoranthene, benzo [k] fluoranthene, benzo [ghi] perylene, indeno [1,2,3-cd] pyrene. If the substance is not quantitatively detected, zero is added to the sum. If other polyaromatic hydrocarbon types are established, their value cannot be included in the PAH indicator.
28. A pH of 5,5 may be allowed for packaged non-aerated drinking water and for drinking water transported by containers; for packaged drinking water which is naturally rich or artificially enriched with carbon dioxide, the minimum value may be lower. For waters with naturally lower pH, pH values of 6,0 to 6,5 shall be considered as meeting the requirements of this Decree provided that the water does not act aggressively against the materials of the distribution system.
29. The sum of the concentrations of tetrachloroethane and trichloroethane shall not exceed 10 μg / l.
30. The limit applies to the sum of quantitatively determined concentrations of trichloromethane (chloroform), tribromomethane (bromoform), dibromochloromethane and bromodichloromethane. If the substance is not quantitatively detected, zero is added to the sum. The aim is to achieve the lowest possible value - without reducing the effectiveness of disinfection.
31. In cases of surface water treatment, water resulting from the treatment plant should not exceed 1,0 PLN (n). A non-phelometric method shall be used for the determination.
32. In cases where higher levels of iron in the source of the crude value are caused by geological background, values of iron up to 0,5 mg / l shall be considered to comply with the requirements of this Decree, provided that there is no adverse effect on organoleptic properties of water, even in the form of occasional visible opacity. '
19. In Annex No 2, introductory wording, the word "symbol 'is replaced by" abbreviation'.
20. In Annex No 2, row No 17, the text "t," is deleted.
21. in Annex 2, Explanatory note 13:
"13. A non-phelometrical method shall be used to determine opacity. ';
22. In Annex 3, Part B, Physical and Chemical Requirements in the Opacity Indicator column Unit, the text "t," is deleted.
23. In Annex 3, explanatory note 7 reads:
'7. A non-phelometrical method shall be used to determine opacity. ';
24. Annexes 4 to 6 shall read as follows:
"Annex No 4 to Decree No 252 / 2004 Coll.
Minimum annual sampling frequency for drinking water
| Počet obyvatel zásobované oblasti [§ 2 písm. d)] při denní spotřebě 200 l na osobu | Objem vody rozváděné či produkované v zásobované oblasti m3/den 1) | Roční počet vzorků pro krácený rozbor 2, 4) | Roční počet vzorků pro úplný rozbor 2, 3) |
|---|---|---|---|
| ≤ 50 | ≤ 10 | 1 | 1 za dva roky |
| > 50 až ≤ 100 | > 10 až ≤ 20 | 2 | 1 |
| > 100 až ≤ 500 | > 20 až ≤ 100 | 3 | 1 |
| > 500 až ≤ 5 000 | >100 až ≤ 1 000 | 4 | 2 |
| > 5 000 až ≤ 50 000 | > 1 000 až ≤ 10 000 | 4 + 3 na každých 1000 m3/den (včetně nedokončených) z celkového objemu | 1 + 1 na každých 4 500 m3/den (včetně nedokončených) z celkového objemu |
| > 50 000 až ≤ 500 000 | > 10 000 až ≤ 100 000 | 3 + 1 na každých 10 000 m3/den (včetně nedokončených) z celkového objemu | |
| > 500 000 | > 100 000 | 12 + 1 na každých 25 000 m3/den (včetně nedokončených) z celkového objemu |
Explanatory notes:
1. If the volume of water produced does not correspond to the population according to the values shown in the table, the number of inhabitants supplied shall be considered to be a decisive factor. If the number of people supplied, in particular due to seasonal recreation, varies significantly and cannot be clearly identified, the average volume of water produced (m3 / day) per year shall be taken as a basis for determining the frequency.
2. Example of calculation: for the volume of distributed water 4 300 m3 / day, the number of cut analyses is 19 [4 + (5 x 3)] and the number of complete analyses 2 [1 + (1 x 1)].
3. The reduction in frequency is possible only if the conditions of Section 4 (3) of the Act are met.
4. The number of reduced analyses required shall not include reduced analyses to be carried out in the framework of the full analysis.
Příloha č. 5
Annex No 5 to Decree No. 252 / 2004 Coll.
Minimum range of analyses of drinking water samples
1. Short Analysis
The purpose of the shortened analysis is to verify whether the limit values of the key microbiological, physicochemical and organoleptic indicators laid down by this Decree or by the competent public health protection authority are complied with by the customer under the law.
The short analysis shall consist of the indicators shown in Table A.
Table A
| č. | ukazatel | vysvětlivky |
|---|---|---|
| 1 | Escherichia coli | |
| 2 | koliformní bakterie | |
| 3 | počty kolonií při 22 °C | |
| 4 | počty kolonií při 36 °C | |
| 5 | mikroskopický obraz - abioseston | 1 |
| 6 | mikroskopický obraz - počet organismů | 1 |
| 7 | mikroskopický obraz - živé organismy | 1 |
| 8 | amonné ionty | |
| 9 | barva | |
| 10 | dusičnany | |
| 11 | dusitany | 5 |
| 12 | hliník | 2 |
| 13 | chlor volný nebo jiná aktivní látka chemické dezinfekce | 3 |
| 14 | chemická spotřeba kyslíku-manganistanem (nebo celkový organický uhlík) | |
| 15 | chuť | |
| 16 | konduktivita | |
| 17 | mangan | 4 |
| 18 | pach | |
| 19 | pH | |
| 20 | zákal | |
| 21 | železo | |
| 22 | teplota | |
| další relevantní ukazatele vyplývající z posouzení rizik |
Explanatory notes:
1. It is determined if surface water is the source. Where groundwater is a source, it shall be determined only if the groundwater source is affected by surface water and an indication of the reproduction of organisms in the network.
2. It is only determined when an aluminium-based collagen agent is used.
3. Only to be determined if products containing chlorine are used. In case of the use of bound active chlorine (mainly in the form of chloramines) for disinfection, the total active chlorine is determined. When another chemical disinfectant is used, the residual amount of the active substance concerned shall be determined.
4. Only to be determined when manganese is removed from water during treatment.
5. Determined only if water disinfection is carried out by chloramination.
For all explanatory notes, if a mixture of water is supplied to the group water duct, where the proportion of water for which the explanatory note applies is permanently less than 50%, and at the same time the water is monitored separately in the water duct for more than 5 000 people, it is not necessary to monitor the indicator in the cut-off analysis in the water duct.
2. Complete Analysis
The purpose of the full analysis is to verify whether the limit values of all the indicators laid down in this Decree or by the competent public health authority are respected on the basis of Article 4 (6) of the Act.
All indicators listed in the table below shall be analysed in full except where otherwise provided for by the competent public health authority under the law.
The sampling points are set out in Table B. If the water is close to the consumer and the risk assessment does not show that there could be a significant change in the quality of the water between the water and the consumer, it may be included as one of the points of consumption in the consumer; This applies to areas where 4 or more complete analyses are carried out per year.
Table B
| č. | Ukazatel | Místa odběru | Vysvětlivky | |
|---|---|---|---|---|
| Voda upravená + | Voda dodávaná (spotřebitel) ++ | |||
| A. Mikrobiologické a biologické ukazatele | ||||
| 1 | Clostridium perfringens | x | 1, 2 | |
| 2 | intestinální enterokoky | x | x | 2 |
| 3 | Escherichia coli | x | x | 2 |
| 4 | koliformní bakterie | x | x | 2 |
| 5 | mikroskopický obraz - abioseston | x | x | 1,2 |
| 6 | mikroskopický obraz - počet organismů | x | x | 1, 2 |
| 7 | mikroskopický obraz - živé organismy | x | x | 1,2 |
| 8 | počty kolonií při 22 °C | x | x | 2 |
| 9 | počty kolonií při 36 °C | x | x | 2 |
| B. Fyzikální, chemické a organoleptické ukazatele | ||||
| 11 | 1,2-dichlorethan | * | * | |
| 12 | akrylamid | - | - | 3 |
| 13 | amonné ionty | * | * | |
| 14 | antimon | * | * | |
| 15 | arsen | * | * | |
| 16 | barva | x | x | 2 |
| 17 | benzen | x | 4 | |
| 18 | benzo[a]pyren | x | ||
| 19 | beryllium | * | * | 5 |
| 20 | bor | * | * | |
| 21 | bromičnany | x | 6 | |
| 22 | celkový organický uhlík | * | * | 7 |
| 23 | dusičnany | * | * | |
| 24 | dusitany | x | x | 2 |
| 25 | epichlorhydrin | - | - | 3 |
| 26 | fluoridy | * | * | |
| 27 | hliník | * | * | |
| 28 | hořčík | * | * | |
| 29 | chemická spotřeba kyslíku Mn | x | x | 2, 8 |
| 30 | chlor volný | x | 9 | |
| 31 | chlorečnany | x | 9 | |
| 32 | chlorethen (vinylchlorid) | x | 3 | |
| 33 | chloridy | * | * | |
| 34 | chloritany | x | 9 | |
| 35 | chrom | * | * | |
| 36 | chuť | x | x | 2 |
| 37 | kadmium | x | ||
| 38 | konduktivita | * | * | |
| 39 | kyanidy celkové | * | * | |
| 40 | mangan | * | * | |
| 41 | měď | x | 10 | |
| 42 | microcystin-LR | x | 2, 11 | |
| 43 | nikl | x | 10 | |
| 44 | olovo | x | 10 | |
| 45 | ozon | x | 2, 9 | |
| 46 | pach | x | x | 2 |
| 47 | pesticidní látka | * | * | 12 |
| 48 | pesticidní látky celkem | * | * | 12 |
| 49 | pH | x | x | 2 |
| 50 | polycyklické aromatické uhlovodíky | x | 13 | |
| 51 | rtuť | * | * | |
| 52 | selen | * | * | |
| 53 | sírany | * | * | |
| 54 | sodík | * | * | |
| 55 | stříbro | x | 14 | |
| 56 | teplota | x | x | 2 |
| 57 | tetrachlorethen | x | ||
| 58 | trihalomethany | x | 15 | |
| 59 | trichlorethen | x | ||
| 60 | trichlormethan (chloroform) | x | ||
| 61 | uran | * | * | 16 |
| 62 | vápník | * | * | |
| 63 | vápník a hořčík | * | * | |
| 64 | zákal | x | x | 2 |
| 65 | železo | x | x | 2 |
Notes to sampling points:
+ Output from water treatment or source without water treatment technology, in both cases after disinfection if used. This is water which no longer requires any further treatment to be supplied to consumers.
+ + Places of compliance with drinking water quality requirements according to § 8.
(x) It means that within one full analysis, the sample must be taken at this point. Where the operator takes a sample both at the exit of the laboratory and at the consumer, it is a time-related sampling where no more than 7 working days may elapse between the sampling of the two samples. The requirement of comparative sampling does not apply to cases where the water treatment plant and distribution network are operated by different operators or are persons under Section 3 (2) of the Act operating a drinking water supply system not covered by Act No. 274 / 2001 Coll.
(*) Means that within one full analysis, the sample can be taken at any of the places so marked.
Explanatory notes:
1. Only applicable to drinking water treated directly from surface water or groundwater affected by surface water.
2. Persons under Section 3 (2) of the Act operating a system of supply of drinking water which does not fall within the scope of Act No. 274 / 2001 Coll., perform under normal operating conditions the determination of this indicator only for consumers.
3. The determination in drinking water shall be carried out only if it is not possible to calculate in accordance with explanatory note 10 of Annex 1 to this Decree and the substance may be present in the water due to the materials used. The determination of chlorothene (vinyl chloride) shall be carried out on new sources before they are put into service.
4. For the determination of benzene, it is necessary to monitor the presence of other aromatic hydrocarbons (toluene, xylenes, ethylbenzene) unless indicated. In the case of quantitative determination, findings of specified substances shall be included in the test report.
5. It is always determined at a new source and further where the findings of beryllium exceed 30% of the limit value.
6. Only determined for water treated with ozone or sodium hypochlorite.
7. It may not be determined for sources supplying less than 10,000 m3 of water per day.
8. It does not need to be determined when the total organic carbon content is determined.
9. The content of free chlorine, chlorites or ozone is only determined when chlorine or products containing chlorine, chloride oxide or ozone are used in water treatment. Water disinfection is also considered to be an adjustment. Chlorates are determined only in the case of oxidation or disinfection of water by means of sodium hypochlorite or chloride oxide.
10. For the control of the quality of drinking water referred to in § 4, a random sampling method shall be used during the working day, consisting of the collection of the first 1000 ml of tap water (without cleaning the tap and without prior water dissolution or water sampling to determine other parameters). If an excess of the limit value is found during this sampling and it is shown to be a deterioration in the influence of the internal water duct, a special purpose sampling shall be carried out to determine the average concentration of the substance consumed by the customer within one week.
11. It is determined for drinking water treated from surface water. It is not necessary to establish if the risk assessment indicates that the presence of sinuses in raw water is unlikely or if the operational analyses of raw water indicate that the occurrence of sinuses is negligible.
12. Only pesticides likely to occur in a given source are to be determined, and no pesticide determination is justified.
13. This indicator shall provide a quantitative determination of the following specific substances: benzo [b] fluoranthene, benzo [k] fluoranthene, benzo [ghi] perylene, indeno [1,2,3-cd] pyrene.
14. It shall be determined for waters disinfected with silver salts and waters treated with equipment containing silver.
15. This indicator shall include a quantitative determination of the following specific substances: trichloromethane (chloroform), tribromomethane (bromoform), dibromochloromethane and bromodichloromethane.
16. It is always determined at a new source of groundwater, where the findings of radioactive indicators indicate the presence of uranium in water and where the findings of uranium exceed 30% of the limit value.
Příloha č. 6
Annex 6 to Decree No 252 / 2004 Coll.
Requirements for analytical methods
A. Indicators for which analysis methods are established
| Ukazatel | Metoda | Alternativní metoda |
|---|---|---|
| Escherichia coli | ČSN EN ISO 9308-1 | ČSN EN ISO 9308-2 |
| koliformní bakterie | ČSN EN ISO 9308-1 | ČSN EN ISO 9308-2 |
| intestinální enterokoky | ČSN EN ISO 7899-2 | |
| Pseudomonas aeruginosa | ČSN EN 16266 | |
| počty kolonií při 22 °C a 36 °C | ČSN EN ISO 6222 | |
| mikroskopický obraz | ČSN 757712 a ČSN 75 7713 | |
| Clostridium perfringens (včetně spor) | ČSN EN ISO 14189 | viz postup níže |
| atypická mykobakteria | viz postup níže | |
| Legionella spp. | ČSN EN ISO 11731 | |
| Staphylococcus aureus | ČSN EN ISO 6888-1 (beze změny A1)*) |
*) In point 4.1 of the standard, the membrane filtration technique of 100 ml water sample is used instead of vaccination
1. Clostridium perfringens (including the dispute):
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Regulation Information
| Citation | Decree No. 70 / 2018 Coll., amending Decree No. 252 / 2004 Coll., laying down sanitary requirements for drinking and hot water and the frequency and scope of control of drinking water, as amended |
|---|---|
| Regulation Type | - |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 27.04.2018 |
|---|---|
| Effective from | 27.04.2018 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
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