§ 14.32.090. Control of backflow and cross-connections.

A.

General. In accordance with the requirements of the regulations of the California Administrative Code, Title 17, Chapter V, Sections 7583 to 7622, inclusive, and any subsequent amendments thereto no water service connection to any premises shall be installed or maintained by the city unless the public water supply is protected as required by said state regulations and the requirements stated below. This section supplements and does not supersede local plumbing regulations, codes or ordinances, or State Board of Public Health Regulations relating to water supply.

B.

Where Protection is Required. Backflow prevention devices shall be installed on the service connection to any premises having:

1.

Access to any auxiliary water supply;

2.

Any substance handled under pressure in such fashion as to permit entry into the water system; any material dangerous to health or toxic substance that might possibly be introduced into the water system;

3.

Any lawn or garden sprinkling system, not installed in accordance with the Uniform Plumbing Code;

4.

Swimming pool or spa system.

C.

Type of Protection. In general, types of backflow prevention devices shall be required as follows:

1.

A service connection to premises having an auxiliary water supply, internal pressure boosting system, or internal systems containing water of deteriorated quality shall be protected by an approved double check valve assembly.

2.

A service connection to premises handling dangerous or toxic materials such as industrial plants, wharves, hospitals, mortuaries, etc., shall be protected by an approved reduced pressure principle backflow prevention device properly located and installed.

3.

A service connection to any sewage treatment plant or sewage pumping station shall be protected by an air-gap separation properly located and installed.

D.

Responsibility for Installation, Inspection and Maintenance. Backflow prevention devices required herein shall be approved by the city and shall be installed, inspected and maintained at the expense of the customer. The backflow prevention device shall be inspected at least annually by the water department or its authorized subcontractor. The city shall charge and the customer shall pay a monthly fee established from time to time by resolution of the city council to cover the cost of the inspection.

E.

Discontinuance of Service. The city may discontinue service of water to any premises and may physically disconnect the customer's piping from the city's water distribution system if a backflow prevention device required by this section is not installed, tested and maintained, or if any defect is found in an installed backflow prevention device, or if it is found that a backflow prevention device has been removed or bypassed or if unprotected cross-connections exist on the premises; and service will not be restored until such conditions or defects are corrected.

F.

Prevention of Flow from One Service Connection through Another. If premises are supplied by more than one water connection to the city's facilities, the customer shall be required to install an approved backflow prevention device at each service connection to prevent the backflow of water from one service through another.

G.

Exception. Any installation of equipment, such as sprinkler systems, pools, spas, etc., installed in accordance with the Uniform Plumbing Code and providing backflow devices shall be exempt from this section.

(Ord. 10-03, § 1 (part))