- Y Diweddaraf sydd Ar Gael (Diwygiedig)
- Gwreiddiol (a wnaed Fel)
Dyma’r fersiwn wreiddiol (fel y’i gwnaed yn wreiddiol).
14.—(1) Schedule 3 to the 2001 Regulations is amended in accordance with paragraphs (2) to (4).
(2) For Table 2 substitute—
(1) Substances and parameters | (2) Estimated population of water supply zone | (3) Reduced | (4) Standard |
---|---|---|---|
(+) See regulation 6(2) and Table 1 in Schedule 3 | |||
(*) Sampling for these parameters may be within water supply zones or at supply points as specified in Table 3, subject to note (ii) and (iii) below. | |||
(i) Where the population is not an exact multiple of 5,000, the population figure should be rounded up to the nearest multiple of 5,000. | |||
(ii) Audit monitoring in water supply zones is required only where sodium hypochlorite is added after water has left the treatment works. In other circumstances, audit monitoring is required at supply points. | |||
(iii) To monitor for total indicative dose (for radioactivity). | |||
Subject to check monitoring | |||
E. coli | < 100 ≥ 100 | – – | 4 |
Coliform bacteria | 12 per 5,000 | ||
Residual disinfectant | population(i) | ||
Aluminium(+) | |||
Ammonium | |||
Clostridium | |||
Perfringens (including | |||
spores)(*) (+) | |||
Colony counts | < 100 | 1 | 2 |
Colour | 100-4,999 | 2 | 4 |
Conductivity(*) | 5,000-9,999 | 6 | 12 |
Hydrogen ion | 10,000-29,999 | 12 | 24 |
Iron(+) | 30,000-49,999 | 18 | 36 |
Manganese(+) | 50,000-79,999 | 26 | 52 |
Nitrate(+) | 80,000-100,000 | 38 | 76 |
Nitrite(+) | |||
Odour | |||
Taste | |||
Turbidity | |||
Subject to audit monitoring | |||
Antimony | < 100 | – | 1 |
Arsenic | 100-4,999 | – | 4 |
Benzene(*) | 5,000-100,000 | – | 8 |
Benzo(a)pyrene | |||
Boron(*) | |||
Bromate(ii) (*) | |||
Cadmium | |||
Chromium | |||
Copper | |||
Cyanide(*) | |||
1,2 dichloroethane(*) | |||
Enterococci | |||
Fluoride(*) | |||
Lead | |||
Mercury(*) | |||
Nickel | |||
Pesticides(*) | |||
PAH | |||
Selenium | |||
Sodium | |||
Trichloroethene/ | |||
Tetrachloroethene(*) | |||
Tetrachloromethane(*) | |||
THM | |||
Chloride(*) | |||
Sulphate(*) | |||
Total Organic Carbon(*) | |||
Tritium(*) | |||
Gross alpha(iii) (*) | |||
Gross beta(iii) (*) | |||
Notes: |
(3) For Table 3 substitute—
(1) Item | (2) Substances and parameters | (3) Volume of water supplied m3/d | (4) Reduced | (5) Standard |
---|---|---|---|---|
(i) Check monitoring is required only in respect of surface waters (see regulation 6(2) and Table 1 in Schedule 3), otherwise audit monitoring. | ||||
(ii) Audit monitoring at supply points is permitted only where sodium hypochlorite is not added after water has left the treatment works. In other circumstances, audit monitoring is required in water supply zones. | ||||
(iii) To monitor for total indicative dose (for radioactivity). | ||||
Subject to check monitoring | ||||
1. | Clostridium Perfringens (including spores)(i) | < 20 | – | 2 |
20–999 | 2 | 4 | ||
2. | Conductivity | 1,000-1,999 | 6 | 12 |
2,000-5,999 | 12 | 24 | ||
6,000-9,999 | 18 | 36 | ||
10,000-15,999 | 26 | 52 | ||
16,000-32,999 | 52 | 104 | ||
33,000-49,999 | 78 | 156 | ||
50,000-67,999 | 104 | 208 | ||
68,000-84,999 | 130 | 260 | ||
85,000-101,999 | 156 | 312 | ||
102,000-119,999 | 183 | 365 | ||
120,000-241,999 | 365 | 730 | ||
242,000-484,999 | 730 | 1,460 | ||
485,000-728,999 | 1,095 | 2,190 | ||
Subject to audit monitoring | ||||
3. | Benzene | |||
4. | Boron | |||
5. | Bromate(ii) | |||
6. | Cyanide | |||
7. | 1,2 dichloroethane | < 20 | 1 | |
8. | Fluoride | 20-999 | 4 | |
9. | Mercury | 1,000-49,999 | 8 | |
10. | Pesticides | 50,00-89,999 | 12 | |
11. | Trichloroethene/Tetrachloroethene | 90,000-299,999 | 24 | |
12. | Tetrachloromethane | 300,000-649,999 | 36 | |
13. | Chloride | ≥ 650,000 | 48 | |
14. | Sulphate | |||
15. | Total organic carbon | |||
16. | Tritium | |||
17. | Gross alpha(iii) | |||
18. | Gross beta(iii) | |||
Notes: |
(4) For Table 4 substitute—
(1) Item | (2) Substances and parameters | (3) Volume of water supplied m3/d | (4) Reduced | (5) Standard |
---|---|---|---|---|
(i) Check monitoring at treatment works is required only when chloramination is practised. In other circumstances, audit monitoring is required. | ||||
Subject to check monitoring | ||||
1. | E. coli | < 20 | – | 4 |
2. | Coliform bacteria | 20–1,999 | 12 | 52 |
3. | Colony counts | 2,000–5,999 | 52 | 104 |
4. | Residual disinfectant | 6,000–11,999 | 104 | 208 |
≥12,000 | 104 | 365 | ||
5. | Nitrite(i) | < 20 | – | 2 |
6. | Turbidity | 20-999 | 2 | 4 |
1,000-1,999 | 6 | 12 | ||
2,000-5,999 | 12 | 24 | ||
6,000-9,999 | 18 | 36 | ||
10,000-15,999 | 26 | 52 | ||
16,000-32,999 | 52 | 104 | ||
33,000-49,999 | 78 | 156 | ||
50,000-67,999 | 104 | 208 | ||
68,000-84,999 | 130 | 260 | ||
85,000-101,999 | 156 | 312 | ||
102,000-119,999 | 183 | 365 | ||
120,000-241,999 | 365 | 730 | ||
242,000-484,999 | 730 | 1,460 | ||
485,000-728,999 | 1,095 | 2,190 | ||
Subject to audit monitoring | ||||
7. | Nitrite(i) | < 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 | |||
Notes: |
Y Diweddaraf sydd Ar Gael (diwygiedig):Y fersiwn ddiweddaraf sydd ar gael o’r ddeddfwriaeth yn cynnwys newidiadau a wnaed gan ddeddfwriaeth ddilynol ac wedi eu gweithredu gan ein tîm golygyddol. Gellir gweld y newidiadau nad ydym wedi eu gweithredu i’r testun eto yn yr ardal ‘Newidiadau i Ddeddfwriaeth’.
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