(A) In accordance with the current North Caroline Standard Plumbing Code, all lawn sprinklers and irrigation piping systems, fire sprinklers and swimming pools shall be equipped with an approved backflow preventer to protect against contamination of the potable water system.
(B) All lawn sprinkler systems without chemical injection or booster pumps and fire sprinkler systems without booster pump facilities or chemical additives are required to have a double check valve assembly (DCVA) located in a place where it is readily accessible for regular testing, maintenance and inspection.
(C) All lawn sprinkler systems with chemical injection or booster pump, fire sprinkler systems with booster pump facilities or chemical additives, and all swimming pools must use a Reduced Pressure Zone (RPZ) preferably installed above ground readily accessible for regular testing, maintenance and inspection.
(Ord. passed 12-12-02)