# The Water Supply (Water Quality) Regulations 2016, Part 3: Annual sampling frequencies: treatment works and supply points

Extent: E+W

Table 11
(1) Volume of water supplied m3/day
(2) Standard sampling frequency per year
<20
4
20-1,999
52
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

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Source: https://www.legislation.gov.uk/uksi/2016/614/schedule/3/part/3 (the official version)
Page: https://openlegislation.uk/water-supply-water-quality-regulations-2016/schedule-3/part-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.