# The Private Water Supplies Regulations (Northern Ireland) 2017, Paragraph 1: Sampling


(1) The Department must monitor for a Group A parameter in accordance with this Part.
(2) “Monitoring for a Group A parameter” means sampling for—
(a) each parameter listed in column 1 of Table 1 of this Schedule in the circumstances listed in the entry which corresponds with that parameter in column 2 of Table 1 of this Schedule; and
(b) any other parameter which may be identified as relevant by the Department in the monitoring programme.
TABLE 1
Group A parameters
1 A supply which consists of both groundwater and surface water shall be deemed to be a supply which consists only of surface water.
(1) Parameter
(2) Circumstances
Aluminium1
If used as water treatment chemicals or where the water originates from, or is influenced by, surface waters
Ammonium
Where chloramination is practised
Coliform bacteria
In all supplies
Colony Counts
In all supplies
Colour
In all supplies
Conductivity
In all supplies
Disinfectant residual
When disinfection treatment is practised
Escherichia coli (E. coli)
In all supplies
Indicative Dose
Where there is treatment in place to reduce the level of radionuclides in water intended for human consumption.
Iron1
If used as water treatment chemicals or where the water originates from, or is influenced by, surface waters
Manganese1
Where the water originates from, or is influenced by, surface waters
Nitrite
Where chloramination is practised
Odour
In all supplies
pH (Hydrogen ion)
In all supplies
Radon
Where there is treatment in place to reduce the level of radionuclides in water intended for human consumption.
Taste
In all supplies
Tritium
Where there is treatment in place to reduce the level of radionuclides in water intended for human consumption.
Turbidity
In all supplies

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Source: https://www.legislation.gov.uk/nisr/2017/211/schedule/3/paragraph/1 (the official version)
Page: https://openlegislation.uk/private-water-supplies-regulations-northern-ireland-2017/schedule-3/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.