# The Public Water Supplies (Scotland) Regulations 2014, Schedule 2: Monitoring: treatment works

Extent: S

TABLE 1
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TABLE 2
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TABLE 3
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TABLE 4
ANNUAL SAMPLING FREQUENCIES: TREATMENT WORKS
1 Sampling at the frequencies specified in this table for item 5 is required only when chloramination is practised. When this is not the case, this parameter must be sampled instead at the frequencies specified in this table for item 7 .
(1)Item
(2)Parameter
(3)Volume of watersupplied m3/d
(4)Reduced
(5)Standard
...
1.
Coliform bacteria
< 20
–
4
2.
Colony count
20-1,999
12
52
3.
Escherichia coli
2,000-5,999
52
104
4.
Residual disinfectant
6,000-11,999
≥12,000
104
208
208
365
5.
Nitrite1
< 20
–
2
6.
Turbidity
20-999
2
4
1,000-1,999
6
12
2,000-5,999
12
24
6,000-9,999
18
36
10,000-15,999
26
52
16,000-32,999
52
104
33,000-49,999
78
156
50,000-67,999
104
208
68,000-84,999
130
260
85,000-101,999
156
312
102,000-119,999
183
365
120,000-241,999
365
730
242,000-484,999
730
1,460
485,000-728,999
1,095
2,190
...
7.
Nitrite1
< 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
Notes—

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Source: https://www.legislation.gov.uk/ssi/2014/364/schedule/2 (the official version)
Page: https://openlegislation.uk/public-water-supplies-scotland-regulations-2014/schedule-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.