(a) Tanks supplied by water system. A water storage tank supplied solely by the water system must be satisfactorily built and covered to prevent the entrance of contamination. Every storage tank supplied solely by the water system must have an approved air gap and overflow pipe; except, that a tank of the pressure type will be permitted if an approved backflow prevention device is installed. The delivery of treated water must be controlled by a slow acting automatic valve which does not cause water hammer in the water system. A storage tank must be maintained in a manner satisfactory to the State Department of Health and the director and is subject to periodic inspection by the director.
(b) Tanks with other water sources. Where treated water service is used as a primary or secondary supply to a roof or suction tank which is also supplied by another source of water, the rules of Subsection (a) apply, except that a storage tank under this subsection must not be of the pressure type, but must have an approved air gap and overflow pipe; no backflow prevention devices will be allowed.
(c) Water pumps. Pumps taking suction from the water system and serving water storage tanks, plus other pumping equipment installed by a customer for any other purpose except dewatering, may be installed and operated only upon approval from the director as to size, delivery rate and valving arrangements. (Ord. 19201)