# The Public Water Supplies (Scotland) Regulations 2014, Paragraph 3


(1) Other parameters, except radon, tritium and indicative dose, (“Group B parameters”) must be monitored at least at the frequencies determined in accordance with the table below.
(2) In the table, “Group A parameters” is to be construed in accordance with paragraph 2.
Minimum frequency of sampling and analysis for compliance monitoring
Volume of water (in m3) distributed or produced each day within a water supply zone (Notes 1 and 2)
Group A parameters:
number of samples per year
Group B parameters:
number of samples per year
> 0
≤ 10
2
1
> 10
≤ 1,000
4
1
> 1,000
≤ 10,000
4 for the first 1,000 m3/day of the total volume, plus 3 for each additional 1,000 m3/day and part thereof
1 for the first 1,000 m3/day of the total volume, plus 1 for each additional 4,500 m3/day and part thereof
> 10,000
≤ 100,000
4 for the first 1,000 m3/day of the total volume, plus 3 for each additional 1,000 m3/day and part thereof
3 for the first 10,000 m3/day of the total volume, plus 1 for each additional 10,000 m3/day and part thereof
> 100,000
4 for the first 1,000 m3/day of the total volume, plus 3 for each additional 1,000 m3/day and part thereof
12 for the first 100,000 m3/day of the total volume, plus 1 for each additional 25,000 m3/day and part thereof
Note 1: The volumes are calculated as averages taken over a year.
Note 2: The number of inhabitants in a water supply zone may be used instead of the volume of water to determine the minimum frequency, assuming water consumption of 200 litres/day per person.

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Source: https://www.legislation.gov.uk/ssi/2014/364/schedule/1A/paragraph/3n1 (the official version)
Page: https://openlegislation.uk/public-water-supplies-scotland-regulations-2014/schedule-1A/paragraph-3n1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.