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The Water Supply (Water Quality) Regulations 2016

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Changes over time for: SCHEDULE 1

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Status:

Point in time view as at 31/12/2020.

Changes to legislation:

There are currently no known outstanding effects for the The Water Supply (Water Quality) Regulations 2016, SCHEDULE 1. Help about Changes to Legislation

Regulation 2

SCHEDULE 1E+WPrescribed concentrations and values

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Table A

Microbiological parameters

Part I: Directive requirements

(1)(2)(3)(4)(5)
ItemParametersConcentration or value (maximum)Units of measurementPoint of compliance
1.Enterococci0number/100mlConsumers' taps
2.Escherichia coli0number/100mlConsumers' taps
(E. coli)

Part II: National requirements

1 Compliance required as to 95% of samples from each service reservoir (regulation 4(6)).

(1)(2)(3)(4)(5)
ItemParametersConcentration or value (maximum)Units of measurementPoint of compliance
1.Coliform bacteria0number/100mlService reservoirs1 and water treatment works
2.Escherichia coli (E. coli)0number/100mlService reservoirs and water treatment works

Table B

Chemical parameters

Part I: Directive requirements

1 The parametric value refers to the residual monomer concentration in the water as calculated according to specifications of the maximum release from the corresponding polymer in contact with the water. This is controlled by product specification.

2 See also regulation 4(2)(d).

3 See the definition of “pesticides and related products” in regulation 2.

4 The parametric value applies to each individual pesticide.

5Pesticides: total” means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring procedure.

6 The specified compounds are—

  • The specified compounds are—

    • — benzo(b)fluoranthen;

    • — benzo(k)fluoranthene;

    • — benzo(ghi)perylene;

    • — indeno(1,2,3-cd)pyrene.

  • The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.

7 The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.

8 The specified compounds are—

  • The specified compounds are—

    • — chloroform;

    • — bromoform;

    • — dibromochloromethane;

    • — bromodichloromethane

  • The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.

(1)(2)(3)(4)(5)
ItemParametersConcentration or value (maximum)Units of measurementPoint of compliance
1.Acrylamide0.10µg/11
2.Antimony5.0µgSb/1Consumers' taps
3.Arsenic10µgAs/1Consumers' taps
4.Benzene1.0µg/1Consumers' taps
5.Benzo(a)pyrene0.010µg/1Consumers' taps
6.Boron1.0mgB/1Consumers' taps
7.Bromate10µgBrO3/1Consumers' taps
8.Cadmium5.0µgCd/1Consumers' taps
9.Chromium50µgCr/1Consumers' taps
10.Copper2.0mgCu/1Consumers' taps
11.Cyanide50µgCN/1Consumers' taps
12.1, 2 dichloroethane3.0µg/1Consumers' taps
13.Epichlorohydrin0.10µg/11
14.Fluoride1.5mgF/1Consumers' taps
15.Lead10µgPb/1Consumers' taps
16.Mercury1.0µgHg/1Consumers' taps
17.Nickel20µgNi/1Consumers' taps
18.Nitrate250mgNO3/1Consumers' taps
19.Nitrite20.50mgNO2/1Consumers' taps
0.10Treatment works
20.Pesticides340.030µg/1Consumers' taps
Aldrin
Dieldrin0.030µg1Consumer's taps
Heptachlor
Heptachlor epoxide
Other pesticides0.10μg/lConsumers' taps
21.Pesticides: total50.50µg/1Consumers' taps
22.Polycyclic aromatic hydrocarbon60.10µg/1Consumers' taps
23.Selenium10µgSe/1Consumers' taps
24.Tetrachloroethene and Trichloroethene710μg/lConsumers' taps
25.Trihalomethanes: Total8100µg/1Consumers' taps
26.Vinyl chloride0.50µg/11

Part II: National requirements

(1)(2)(3)(4)(5)
ItemParametersConcentration or value (maximum)Units of measurementPoint of compliance
1.Aluminium200µgA1/1Consumers' taps
2.Colour20mg/1 Pt/CoConsumers' taps
3.Iron200µgFe/1Consumers' taps
4.Manganese50µgMn/1Consumers' taps
5.OdourAcceptable to consumers and no abnormal changeConsumers' taps
6.Sodium200mgNa/1Consumers' taps
7.TasteAcceptable to consumers and no abnormal changeConsumers' taps
8.Tetrachloromethane3µg/1Consumers' taps
9.Turbidity4NTUConsumers' taps

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