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Regulation 6
Textual Amendments
F1Sch. 3 substituted (11.7.2018) by The Water Supply (Water Quality) (Amendment) Regulations 2018 (S.I. 2018/706), regs. 1(1), 2(13)
(1) Item number | (2) Parameter | (3) Circumstances |
---|---|---|
(1) Sampling for this parameter in water supply zones may be substituted by sampling at supply points. | ||
1 | Aluminium | Where used as a water treatment chemical or where the water originates from, or is influenced by, surface waters |
2 | Ammonium | Where chloramination is practised |
3 | Coliform bacteria | In all circumstances |
4 | Colony counts 22°C | In all circumstances |
5 | Colour | In all circumstances |
6 | Conductivity | In all circumstances |
7 | E. coli | In all circumstances |
8 | Hydrogen ion | In all circumstances |
9 | Iron | Where used as a water treatment chemical or where the water originates from, or is influenced by, surface waters |
10 | Manganese | Where the water originates from, or is influenced by, surface waters |
11 | Nitrate | Where chloramination is practised |
12 | Nitrite | Where chloramination is practised |
13 | Odour | In all circumstances |
14 | Residual disinfectant | In all circumstances |
15 | Taste | In all circumstances |
16 | Turbidity | In all circumstances |
(1) Item number | (2) Parameter | (3) Circumstances |
---|---|---|
(1) Sampling for these parameters may be within water supply zones (Group B1) or at supply points (Group B2). | ||
(2) Monitoring of this parameter in water supply zones is required only where sodium hypochlorite is added after water has left the treatment works. In other circumstances, monitoring is required at supply points (see Group B2). | ||
(3) To monitor for indicative dose. | ||
(4) In the event that a single sample is taken in a year, a further sample must be taken if there is any change in relation to that supply that could affect the concentration of radionuclides in the water supply. | ||
1 | Aluminium | Where not used as a water treatment chemical or where the water neither originates from, nor is influenced by, surface waters |
2 | Ammonium | Where chloramination is not practised |
3 | Antimony | In all circumstances |
4 | Arsenic | In all circumstances |
5 | Benzene | In all circumstances |
6 | Benzo(a)pyrene | In all circumstances |
7 | Boron | In all circumstances |
8 | Bromate | In all circumstances |
9 | Cadmium | In all circumstances |
10 | Chloride | In all circumstances |
11 | Chromium | In all circumstances |
12 | Clostridium perfringens (including spores) | In all circumstances |
13 | Copper | In all circumstances |
14 | Cyanide | In all circumstances |
15 | 1, 2 dichloroethane | In all circumstances |
16 | Enterococci | In all circumstances |
17 | Fluoride | In all circumstances |
18 | Gross alpha | In all circumstances |
19 | Gross beta | In all circumstances |
20 | Iron | Where not used as a water treatment chemical or where the water neither originates from, nor is influenced by, surface waters |
21 | Lead | In all circumstances |
22 | Manganese | Where the water neither originates from, nor is influenced by, surface waters. |
23 | Mercury | In all circumstances |
24 | Nickel | In all circumstances |
25 | Nitrate | Where chloramination is not practised |
26 | Nitrite | Where chloramination is not practised |
27 | Pesticides and related products | In all circumstances |
28 | Polycyclic aromatic hydrocarbon | In all circumstances |
29 | Radon | In all circumstances |
30 | Selenium | In all circumstances |
31 | Sodium | In all circumstances |
32 | Sulphate | In all circumstances |
33 | Tetrachloroethene | In all circumstances |
34 | Tetrachloromethane | In all circumstances |
35 | Total organic carbon | In all circumstances |
36 | Trichloroethene | In all circumstances |
37 | Trihalomethanes: Total | In all circumstances |
38 | Tritium | In all circumstances |
(1) Item number | (2) Parameter | (3) Circumstances |
---|---|---|
(1) Sampling for these parameters may be within water supply zones (Group B1) or at supply points (Group B2). | ||
(2) Monitoring is required at supply points where sodium hypochlorite is not added after water has left the treatment works. In other circumstances, see Group B1. | ||
(3) To monitor for indicative dose. | ||
(4) In the event that a single sample is taken in a year, a further sample must be taken if there is any change in relation to that supply that could affect the concentration of radionuclides in the water supply. | ||
1 | Benzene | In all circumstances |
2 | Boron | In all circumstances |
3 | Bromate | In all circumstances |
4 | Chloride | In all circumstances |
5 | Clostridium perfringens (including spores) | In all circumstances |
6 | Cyanide | In all circumstances |
7 | 1, 2 dichloroethane | In all circumstances |
8 | Fluoride | In all circumstances |
9 | Gross alpha | In all circumstances |
10 | Gross beta | In all circumstances |
11 | Indicative dose | In all circumstances |
12 | Mercury | In all circumstances |
13 | Nitrite | When chloramination is not practised |
14 | Pesticides and related products | In all circumstances |
15 | Radon | In all circumstances |
16 | Sulphate | In all circumstances |
17 | Tetrachloroethene | In all circumstances |
18 | Tetrachloromethane | In all circumstances |
19 | Total organic carbon | In all circumstances |
20 | Trichloroethene | In all circumstances |
21 | Tritium | In all circumstances |
(1) Item number | (2) Parameter |
---|---|
1 | Coliform bacteria |
2 | E. coli |
3 | Residual disinfectant |
(1) Item number | (2) Parameter |
---|---|
1 | Coliform bacteria |
2 | Colony counts 22°C |
3 | E. coli |
4 | Nitrite |
5 | Residual disinfectant |
6 | Turbidity |
(1) Item number | (2) Parameter |
---|---|
1 | Conductivity |
(1) Item number | (2) Parameter |
---|---|
1 | Aluminium |
2 | Ammonium |
3 | Colony counts 22°C |
4 | Colour |
5 | Conductivity |
6 | Hydrogen ion |
7 | Iron |
8 | Manganese |
9 | Nitrate |
10 | Nitrite |
11 | Odour |
12 | Taste |
13 | Turbidity |
This table and each table which follows it in this Part set out the annual sampling frequencies for all the substances and parameters comprising each of the groups to which they correspond, those groups having been outlined in Part 1 of this Schedule. These are determined for each water supply zone according to its estimated population (as specified in column 1 of each table in this Part). The number of samples to be taken is the standard number specified in column 2, unless a notice varying this number has been given under regulation 9.
For the purposes of this table, where the population is not an exact multiple of 5,000, the population figure must be rounded up to the nearest multiple of 5,000.
(1) Estimated population of water supply zone | (2) Standard sampling frequency per year |
---|---|
<100 | 2 |
100-4,999 | 4 |
5,000-9,999 | 12 |
10,000-29,999 | 24 |
30,000-49,999 | 36 |
50,000-79,999 | 52 |
80,000-100,000 | 76 |
(1) Estimated population of water supply zone | (2) Standard sampling frequency per year |
---|---|
<100 | 1 |
100-4,999 | 4 |
5000-100,000 | 8 |
(1) Estimated population of water supply zone | (2) Standard sampling frequency per year |
---|---|
<100 | 4 |
≥100 | 12 per 5,000 population |
For the purposes of this table, where the population is not an exact multiple of 5,000, the population figure must be rounded up to the nearest multiple of 5,000.
This table and each table which follows it in this Part set out the annual sampling frequencies for all the substances and parameters comprising each of the groups to which they correspond at treatment works or supply points, those groups having been outlined in Part 1 of this Schedule. The frequencies are determined according to the volume of water supplied at each treatment works or supply point. The number of samples to be taken is the standard number specified in column 2, unless a notice varying this number has been given under regulation 9.
(1) Volume of water supplied m3/day | (2) Standard sampling frequency per year |
---|---|
<20 | 4 |
20-1,999 | 12 |
2,000-5,999 | 104 |
6,000-11,999 | 208 |
≥12,000 | 365 |
(1) Volume of water supplied m3/day | (2) Standard sampling frequency per year |
---|---|
<20 | 2 |
20-999 | 4 |
1,000-1999 | 12 |
2,000-5,999 | 24 |
6,000-9,999 | 36 |
10,000-15,999 | 52 |
16,000-32,999 | 104 |
33,000-49,999 | 156 |
50,000-67,999 | 208 |
68,000-84,999 | 260 |
85,000-101,999 | 312 |
102,000-119,999 | 365 |
120,000-241,999 | 730 |
242,000-484,999 | 1,460 |
485,000-728,999 | 2,190 |
(1) Volume of water supplied m3/day | (2) Standard sampling frequency per year |
---|---|
<20 | 1 |
20-999 | 4 |
1,000-49,999 | 8 |
50,000-89,999 | 12 |
90,000-299,999 | 24 |
300,000-649,999 | 36 |
≥650,000 | 48] |