(A) Backflow protection at the service connection: usual requirements and methods of connections.
(B) The following abbreviations have been adopted describing devices and methods used to control cross-connections at the service connection:
Description of abbreviations | |
Air gap | A.G. |
Double check valve assembly | D.C.A. |
Reduced pressure backflow device | R.P.D. |
Auxiliary water systems | |
Approved source supplemental to the public water system | None |
Potable, but not acceptable as supplemental source for the public water system | D.C.A. |
Potentially contaminated source | A.G. or R.P.D. |
Beverage bottling plants | |
Breweries | A.G. or R.P.D. |
Not subject to back pressure | D.C.A. |
Subject to back pressure | A.G. or R.P.D. |
Buildings - hotels, apartment houses (public and private) or other structures | |
Canneries, packing houses and reduction plants | A.G. or R.P.D. |
Chemically contaminated water systems | A.G. or R.P.D. |
Chemical plants, manufacturing processing compounding treatment | A.G. or R.P.D. |
Major health hazard exists | A.G. or R.P.D. |
Minor health hazard exists | D.C.A. |
Civil works | |
Health hazard exists | A.G. or R.P.D. |
No health hazard | D.C.A. |
Dairies and cold storage plants | |
Film laboratories | A.G. or R.P.D. |
Health hazard exists | A.G. or R.P.D. |
No health hazard | D.C.A. |
Fire systems | |
Health hazard exists | A.G. or R.P.D. |
No health hazard | D.C.A. |
Hospitals, medical buildings, sanitariums, morgues, mortuaries, autopsy facilities | |
Irrigation system - premises having irrigation systems separate from their domestic systems, such as parks, playgrounds, cemeteries, golf courses, schools, estates, ranches and the like | A.G. or R.P.D. |
Laundries and dye works | - |
Nursing and convalescent homes and clinics (single story) | D.C.A. |
Metal manufacturing cleaning processing and fabricating plants | |
Health hazard exists | A.G. or R.P.D. |
No health hazard | D.C.A. |
Other | |
Paper and paper products plants | A.G. or R.P.D. |
Plating plants | A.G. or R.P.D. |
Power plants | A.G. or R.P.D. |
Radioactive materials or substance plants or facilities handling | A.G. or R.P.D. |
Restricted, classified or other closed facilities | A.G. or R.P.D. |
Sand and gravel plants | A.G. or R.P.D. |
Schools and colleges | A.G. or R.P.D. |
Sewage and storm drain facilities | A.G. or R.P.D. |
(Prior Code, § E-V-5)