# The Water Supply (Water Quality) Regulations 2018, Paragraph


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 one 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.
Estimated population of water supply zone
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
Estimated population of water supply zone
Standard sampling frequency per year
<100
1
100-4,999
4
5,000-100,000
8
Table 10
Annual sampling frequencies for Group A1: water supply zones
Estimated population of water supply zone
Standard sampling frequency per year
<100
4
≥100
12 per 5,000 population

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Source: https://www.legislation.gov.uk/wsi/2018/647/schedule/3/part/2/paragraph/wrapper4n1 (the official version)
Page: https://openlegislation.uk/water-supply-water-quality-regulations-2018/schedule-3/part-2/paragraph-wrapper4n1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.