This is the original version (as it was originally made).
1.—(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 to—
(a)determine whether or not water complies with the concentrations or values in Schedule 1,
(b)provide information on the organoleptic and microbiological quality of the water, and
(c)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) | Where the water originates from, or is influenced by, surface waters |
| 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 | 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 |
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