# The Water Supply (Water Quality) Regulations 2016, Part 2: Annual sampling frequencies: water supply zones


Table 8
Annual sampling frequencies for Group A4 parameters: water supply zones
(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
Table 9
Annual sampling frequencies for Group B1 parameters: water supply zones
(1) Estimated population of water supply zone
(2) Standard sampling frequency per year
<100
1
100-4,999
4
5000-100,000
8
Table 10
Annual sampling frequencies for Group A1: water supply zones
(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.

---
Source: https://www.legislation.gov.uk/uksi/2016/614/schedule/3/part/2 (the official version)
Page: https://openlegislation.uk/water-supply-water-quality-regulations-2016/schedule-3/part-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.