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18-29-609.8 Valve leakage diverter.
   Each water sterilizer filled with water through directly connected piping shall be equipped with an approved leakage diverter or bleed line on the water supply control valve to indicate and conduct any leakage of unsterile water away from the sterile zone.
18-29-610 Disinfection of Potable Water System.
18-29-610.1 Scope.
   Potable water systems or any part thereof installed or repaired shall be disinfected in accordance with one of the following methods before it is placed in operation:
   1.   The system, or part thereof, shall be filled with a solution containing 50 parts per million of available chlorine and allowed to stand six hours before flushing and returning to service;
   2.   The system, or part thereof, shall be filled with a solution containing 100 parts per million of available chlorine and allowed to stand two hours before flushing and returning to service;
   3.   In the case of a potable-water storage tank where it is not possible to disinfect as provided in subsections 1 and 2, the entire interior of the tank shall be swabbed with a solution containing 200 parts per million of available chlorine and the solution allowed to stand two hours before flushing and returning to service.
18-29-611 Water Treatment Units.
18-29-611.1 Design.
   Drinking water treatment units and filters shall meet the requirements of NSF 42 and NSF 53.
18-29-611.2 Reverse osmosis systems.
   Reverse osmosis drinking water treatment systems shall meet the requirements of NSF 58. Waste or discharge from reverse osmosis or other types of water treatment units shall enter the drainage system through an air gap.
Article 7. Sanitary Drainage (18-29-701 et seq.)
18-29-701 General.
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