(A) Approved backflow prevention assemblies shall be installed on the service line to any premises that the city has identified as having a potential for backflow.
(B) The following types of facilities or services have been identified by the city as having a potential for backflow of non-potable water into the public water supply system. Therefore, an approved backflow prevention assembly will be required on all such services according to the degree of hazard present. Other types of facilities or services not listed below may also be required to install approved backflow prevention assemblies if determined necessary by the city. As a minimum requirement, all commercial services will be required to install a double check valve assembly, unless otherwise listed below.
DCVA = Double check valve assembly RPF = Reduced pressure principle assembly DCDA = Double check detector assembly RPDA = Reduced pressure detector assembly AG = Air gap PVB = Pressure vacuum breaker | |
Aircraft and missile plants | RP |
Automotive service stations, dealerships, and the like: No health hazard Health hazard | DCVA RP |
Automotive plants | RP |
Auxiliary water systems: Approved public/private water supply Unapproved public/private water supply Used water and industrial fluids | DCVA AG RP |
Bakeries: No health hazard Health hazard | DCVA RP |
Beauty shops/barber shops: No health hazard Health hazard | DCVA RP |
Beverage bottling plants | RP |
Breweries | RP |
Buildings - Hotels, apartment houses, public and private buildings, or other structures having unprotected cross-connections: (Under five stories) No health hazard Health hazard (Over five stories) All | DCVA RP RP |
Canneries, packing houses, and rendering plants | RP |
Chemical plants - manufacturing, processing, compounding or treatment | RP |
Chemically contaminated water systems | RP |
Commercial car-wash facilities | RP |
Commercial greenhouses | RI |
Commercial sales establishments (department stores, malls, and the like): No health hazard Health hazard | DCVA RP |
Concrete/asphalt plants | RP |
Dairies and cold storage plants | RI |
Dye works | RI |
Film laboratories | RI |
Fire systems: Systems 3/4-inch to 2-inch: No health hazard Health hazard (booster pumps, foam, antifreeze solution, and the like) Systems 2-1/2 inch to 10-inch, or larger: No health hazard Health hazard (booster pumps, foam, antifreeze solution, and the like) | DCDA RPDA DCDA RPDA |
Hospitals, medical buildings, sanitariums, morgues, mortuaries, autopsy facilities, nursing and convalescent homes, medical clinics, and veterinary hospitals | RP |
Industrial facilities: No health hazard Health hazard | DCVA RP |
Laundries: No health hazard Health hazard (i.e., dry cleaners) | DCVA RP |
Lawn irrigation systems (split taps): No health hazard Health hazard (booster pumps, chemical systems) | DCVA RP |
Metal manufacturing, cleaning, processing, and fabricating plants | RP |
Mobile home parks: No health hazard Health hazard | DCVA RI |
Oil and gas production, storage or transmission properties | RP |
Paper and paper products plants | RP |
Pest control (exterminating and fumigation) | RP |
Plating plant | RP |
Power plants | RP |
Radioactive materials or substances, plants or facilities handling | RP |
Restaurants: No health hazard Health hazard | DCDA RP |
Restricted, classified, or other closed facilities | RP |
Rubber plants (natural or synthetic) | RP |
Sand and gravel plants | RP |
Schools and colleges | RP |
Sewage and storm drain facilities | RP |
Swimming pools | RP |
Waterfront facilities and industries | RP |
All assemblies and installations shall be subject to inspection and approval by the city. | |
(Ord. O-10-24, passed 8-1-2024)