PART 3Action in the event of failure
Procedure following investigation16.
(1)
Once a local authority has carried out an investigation and established the cause of the water being unwholesome, it must act in accordance with this regulation.
(2)
If the cause of the unwholesome water is in the pipework within a single dwelling, it must promptly inform the people concerned and offer them advice on measures necessary for the protection of human health.
(3)
Otherwise, if it cannot solve the problem informally the local authority—
(a)
may on application grant an authorisation in accordance with regulation 17(2) if the conditions in that regulation are fulfilled; and
(b)
if it does not grant such an authorisation, must (or, in the case of a supply to a single dwelling, may) serve a notice, either in accordance with section 80 of the Water Industry Act 1991 or under regulation 18 if the conditions in that regulation are fulfilled.