SCHEDULE 2Monitoring
PART 1Check monitoring
Sampling1
1
A local authority must undertake check monitoring in accordance with this Part.
2
Check monitoring means sampling for each parameter listed in Table 1 in the circumstances listed in that table in order—
a
to determine whether or not water complies with the concentrations or values in Schedule 1;
b
to provide information on the organoleptic and microbiological quality of the water; and
c
to establish the effectiveness of the treatment of the water, including disinfection.
Parameter | Circumstances |
---|---|
Aluminium | When used as flocculant or where the water originates from, or is influenced by, surface waters |
Ammonium | In all supplies |
Clostridium perfringens (including spores) waters | Where the water originates from, or is influenced by, surface |
Coliform bacteria | In all supplies |
Colony counts | In all supplies |
Colour | In all supplies |
Conductivity | In all supplies |
Escherichia coli (E. coli) | In all supplies |
Hydrogen ion concentration | In all supplies |
Iron | When used as flocculant or where the water originates from, or is influenced by, surface waters |
Manganese | Where the water originates from, or is influenced by, surface waters |
Nitrate | When chloramination is practised |
Nitrite | When chloramination is practised |
Odour | In all supplies |
Pseudomonas aeruginosa | Only in the case of water in bottles or containers |
Taste | In all supplies |
Turbidity | In all supplies |