§ 25.86. Type of protection required.

(a) The type of protection to prevent backflow into the approved water supply shall be commensurate with the degree of hazard that exists on the consumer's premises. The type of protection device that may be required (listed in an increasing level of protection) includes: Atmospheric Vacuum Breaker (AVB); Pressure Vacuum Breaker (PVB); Double Check Valve Assembly (DC); Reduced Pressure Principle Backflow Prevention Device (RP); and Air-gap separation (AG). The water user may choose a higher level of protection than required by the city. The minimum types of backflow protection required to protect the approved water supply of premises with varying degrees of hazard are given in the cross-connection rules and regulations.

(b) Backflow protection for the city public water system shall be installed at the service connection unless the cross-connection can be satisfactorily corrected within the premises. Backflow protection for the water user's system shall be installed as prescribed by the city. Situations which are not covered in the cross-connection rules and regulations shall be evaluated on a case by case basis and the appropriate backflow protection shall be determined by the city or health agency.

(c) Only backflow prevention devices which have been approved by the city shall be acceptable for installation at a service connection or on a water user's system. The city will provide upon request, to any affected customer, a list of approved backflow prevention devices.

(d) Backflow prevention devices shall be installed in a manner prescribed in the cross- connection rules and regulations.

(Ord. No. 984.)