(a) General.
- (1) Every new well or existing water supply system that has been disrupted for service or repair should be disinfected before it is returned to use.
- (2) Water in the well and storage tank should be treated with a strong chlorine solution to destroy disease organisms.
- (3) All pipe lines and fixtures in the distribution system should be rinsed and flushed with chlorinated water.
- (4) All wells, excluding irrigation, will be disinfected.
(b) Timing.
- (1) If the constructor of the well is also responsible for preparing the well for the pump installation and making the pump installations, disinfection may be postponed until his or her work is completed.
- (2) In the event the constructor does not have this responsibility, it is required before capping the well that an appropriate amount of chlorine solution be introduced into the well.
(c) Disinfection and pump installation.
- (1) At the time of new pump installation or reinstallation of an existing pump, the water system shall be chlorinated to a minimum concentration of fifty parts per million (50 ppm) for a minimum of twenty-four (24) hours.
- (2) Each well shall be disinfected by tablets and/or liquid.
- (d) Water. Water that has contacted pipe or equipment used in chemigation shall not be allowed to back siphon or be used to backwash the well.
(e) Emergencies.
(1) If an emergency exists, the water system may be used, provided the system:
- (A) Is not for human consumption; and
- (B) Is disinfected as soon as the situation permits.
- (2) Refer to the tables in 17 CAR § 11-1001 et seq., for guidance on administering chlorine.