7. A local authority must monitor all private supplies in its area in accordance with this Part when carrying out its duties under section 77(1) of the Water Industry Act 1991(1).
8. Where water is supplied by a water undertaker or licensed water supplier and is then further distributed by a person other than a water undertaker or licensed water supplier, any monitoring which the risk assessment shows to be necessary must be carried out.
9. In the case of a private supply (other than that specified in regulation 8) that—
(a)supplies an average daily volume of water of 10m3 or more, or
(b)supplies water to premises where the water is used for a commercial activity or to public premises,
the local authority must monitor in accordance with Schedule 2 and carry out any additional monitoring that the risk assessment shows to be necessary.
10.—(1) In all cases, other than a private supply to a single dwelling not used for a commercial activity and those to which regulation 8 and 9 apply, the local authority must monitor for–
(a)conductivity;
(b)enterococci;
(c)Escherichia coli (E. coli);
(d)hydrogen ion concentration;
(e)turbidity;
(f)any parameter in Schedule 1 identified in the risk assessment as being at risk of not complying with the concentrations or values in that Schedule; and
(g)anything else identified in the risk assessment as a potential danger to human health.
(2) It must monitor at least every five years and carry out any additional monitoring that the risk assessment shows to be necessary.
(3) In the case of a private supply to a single dwelling not used for a commercial activity a local authority may monitor the supply in accordance with this regulation, and must do so if requested to do so by the owner or occupier.
11.—(1) When a local authority monitors a private supply it must take a sample—
(a)if the water is supplied for domestic purposes, from a tap normally used to supply water for human consumption, and which, if there is more than one tap, is representative of the water supplied to the premises;
(b)if the water is used in a food-production undertaking, at the point at which it is used in the undertaking;
(c)if the water is supplied from a tanker, at the point at which it emerges from the tanker;
(d)in any other case at a suitable point.
(2) It must then ensure that the sample is analysed.
(3) Schedule 3 makes further provision for sampling and analysis.
12. A local authority must make and keep records in respect of every private supply in its area in accordance with Schedule 4.
13. By 31 July 2010, and by 31 January each following year, every local authority must–
(a)send the Chief Inspector of Drinking Water for Wales a copy of the records in Schedule 4; and
(b)upon request, send the Welsh Ministers a copy of those records.