19.—(1) On completion of the investigation mentioned in regulation 17(1), Scottish Water must, as soon as possible, report the findings of the investigation to—
(a)the Drinking Water Quality Regulator for Scotland;
(b)the Scottish Ministers; and
(c)where the failure in question is due to a domestic distribution system (or to the maintenance of that system) in premises where water is supplied to the public, the local authority for the area in which the premises is located.
(2) The report must specify—
(a)the matters in regulation 17(2)(a) and (b);
(b)whether the failure has ceased and, if so, whether it is likely to recur;
(c)any action which Scottish Water considers must be taken—
(i)to restore, as soon as possible, the quality of the water in question so that it satisfies the requirements of regulation 4(2);
(ii)to protect human health until the quality of the water is restored; and
(iii)to minimise the risk of the water failing to satisfy any such requirement; and
(d)any such action taken, or to be taken, by Scottish Water.
(3) Where the report specifies that the failure is due to a domestic distribution system (or to the maintenance of that system) in premises where water is supplied to the public, Scottish Water must as soon as possible inform such persons as the Drinking Water Quality Regulator for Scotland or the Scottish Ministers may, by notice given to Scottish Water, specify—
(a)of the cause and extent of the failure;
(b)whether the failure constitutes a potential danger to human health;
(c)of any remedial action taken, or to be taken, by Scottish Water; and
(d)of any action that Scottish Water considers is necessary or desirable for those persons to take to protect human health.