Degree of Hazard | Minimum Type of Backflow Prevention | |
Degree of Hazard | Minimum Type of Backflow Prevention | |
Sewage and hazardous substances | ||
Premises where the public water system is used to supplement the reclaimed water supply | AG | |
Premises where there are wastewater pumping and/or treatment plants and there is no interconnection with the potable water system. This does not include a single-family residence that has a sewage lift pump. A RP may be provided in lieu of an AG if approved by the health agency and water supplier. | AG | |
Premises where reclaimed water is used and there is no interconnection with the potable water system. A RP may be provided in lieu of an AG if approved by the health agency and water supplier. | AG | |
Premises where hazardous substances are handled in any manner in which the substances may enter the potable water system. This does not include a single-family residence that has a sewage lift pump. A RP may be provided in lieu of an AG if approved by the health agency and water supplier. | AG | |
Premises where there are irrigation systems into which fertilizers, herbicides, or pesticides are, or can be injected. | RP | |
Auxiliary Water Supplies | ||
Premises where there is an unapproved auxiliary water supply which is interconnected with the public water system. A RP or DC may be provided in lieu of an AG if approved by the health agency and water supplier. | AG | |
Premises where there is an unapproved auxiliary water supply and there are no interconnections with the public water system. A DC may be provided in lieu of a RP if approved by the health agency and water supplier. | RG | |
Fire Protection System | ||
Premises where the fire system is directly supplied from the public water system and there is an unapproved auxiliary water supply on or to the premises (not interconnected). | DC | |
Premises where the fire system is supplied from the public water system and interconnected with an unapproved auxiliary water supply. A RP may be provided in lieu of an AG if approved by the health agency and water supplier. | AG | |
Premises where the fire system is supplied from the public water system and where either elevated storage tanks or fire pumps which take suction from private reservoirs or tanks are used. | DC | |
Dockside Watering Points and Marine Facilities | RP | |
Pier hydrants for supplying water to vessels for any purpose. | RP | |
Premises where there are marine facilities. | RP | |
Premises where entry is restricted so that inspections for cross-connections cannot be made with sufficient frequency or at sufficiently short notice to assure that cross-connections do not exist. | RP | |
Premises where there is a repeated history of cross-connections being established or reestablished. | RP | |
(‘86 Code, § 15.18.040) (Ord. 4073, passed - - )