# Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption, Division 3: Sampling frequencies

Extent: E+W+S+N.I.

Table 1
Minimum frequency of sampling and analysis for compliance monitoring
Volume of water distributed or produced each day within a supply zone (See Notes 1 and 2) m 3
Group A parameter number of samples per year (See Note 3)
Group B parameter number of samples per year
≤ 100
> 0
(See Note 4)
> 0
(See Note 4)
> 100
≤ 1 000
4
1
> 1 000
≤ 10 000
4
+ 3
for each 1 000 m 3 /d and part thereof of the total volume
1
+ 1
for each 4 500 m 3 /d and part thereof of the total volume
> 10 000
≤ 100 000
3
+ 1
for each 10 000 m 3 /d and part thereof of the total volume
> 100 000
12
+ 1
for each 25 000 m 3 /d and part thereof of the total volume

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Source: https://www.legislation.gov.uk/eudr/1998/83/annex/II/part/B/division/3 (the official version)
Page: https://openlegislation.uk/eu-directive-1998-83/annex-II/part-B/division-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.