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Part 3 Annual sampling frequencies: treatment works and supply pointsF1

England and Wales

Table 11

(1) Volume of water supplied m³/day	(2) Standard sampling frequency per year
<20	4
20-1,999	F252
2,000-5,999	104
6,000-11,999	208
≥12,000	365

Table 12

Annual sampling frequencies for Group A3 parameters: supply points

(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

Table 13

Annual sampling frequencies for Group B2 parameters: treatment works or supply points

(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

Annotations

Textual amendments

F1: Sch. 3 substituted (11.7.2018) by The Water Supply (Water Quality) (Amendment) Regulations 2018 (S.I. 2018/706), regs. 1(1), 2(13)
F2: Word in Sch. 3 Pt. 3 substituted (29.3.2019) by The Environment, Food and Rural Affairs (Miscellaneous Amendments etc.) Regulations 2019 (S.I. 2019/526), regs. 1(2), 6(3)(b)