5.—(1) The manager must ensure that the water supply and drainage system serving the HMO is maintained in good, clean and working condition and in particular he must ensure that—
(a)any tank, cistern or similar receptacle used for the storage of water for drinking or other domestic purposes is kept in a good, clean and working condition, with a cover kept over it to keep the water in a clean and proper condition; and
(b)any water fitting which is liable to damage by frost is protected from frost damage.
(2) The manager must not unreasonably cause or permit the water or drainage supply that is used by any occupier at the HMO to be interrupted.
(3) In this regulation “water fitting” means a pipe, tap, cock, valve, ferrule, meter, cistern, bath, water closet or soil pan used in connection with the supply or use of water, but the reference in this definition to a pipe does not include an overflow pipe or the mains supply pipe.