Chapter 13.08


13.08.010    Purpose.

13.08.020    Authority.

13.08.030    Definitions.

13.08.040    Mitigation and prevention.

13.08.050    Discontinuance of service.

13.08.060    Right of entry.

13.08.070    Requirements for certification as a backflow prevention device tester.

13.08.075    Backflow prevention device tester responsibilities.

13.08.080    Remedies cumulative.

13.08.010 Purpose.

The purpose of these regulations is to protect the city of Lakeport water system against actual or potential cross-connections to such potential sources of contamination or pollution as may exist on the water user’s premises:

A.    By eliminating existing cross-connections between the City of Lakeport water system and auxiliary water supplies or other sources of potential contamination; and

B.    By preventing the occurrence of future cross-connections. (Ord. 736 (part), 1992)

13.08.020 Authority.

These regulations are in accordance with the State of California Administrative Code, Title 17 - Sections 7583 et seq. (Ord. 736 (part), 1992)

13.08.030 Definitions.

For the purpose of this chapter, the words set out in this section shall have the following meanings:

“Air-gap separation (AG)” is a physical break between the supply line and a receiving vessel.

“Approved water supply” is a water supply whose potability is regulated by a state or local health agency, i.e., the city of Lakeport water system.

“Auxiliary water supply” is any water supply other than that received from a public water system.

“City” means city of Lakeport and duly authorized agents.

“Cross-connection” is an unprotected actual or potential connection between a potable water system used to supply water for drinking purposes and any source or system containing unapproved water or a substance that is not or cannot be approved as safe, wholesome, and potable. Bypass arrangements, jumper connections, removable sections, swivel or change-over devices, or other devices through which backflow could occur, shall be considered to be cross-connections.

“Cross-connection control survey” shall mean any written correspondence from city to a water user requesting information related to the implementation, compliance and monitoring of the provisions of this chapter.

“Double check valve assembly (DC)” is an assembly of at least two independently acting check valves including tightly closing shut-off valves on each side of the check valve assembly and test cocks available for testing the watertightness of each check valve.

“Health agency’ means the California Department of Health Services.

“Reduced pressure principle backflow prevention device (RP)” is a backflow preventer incorporating not less than two check valves, an automatically operated differential relief valve located between the two check valves, a tightly closing shut-off valve on each side of the check valve assembly, and equipped with necessary test cocks for testing.

“User connection” is the point of connection of a user’s piping to the water supplier’s facilities.

“Water user” is any person obtaining water from a public water supply including the owner of the property receiving such water. (Ord. 736 (part), 1992)

13.08.040 Mitigation and prevention.

A.    No Cross-Connection Allowed. It is unlawful for any person, firm or corporation at any time to make or maintain or cause to be made or maintained, temporarily or permanently, for any period of time whatever, any cross-connection between plumbing pipes or water fixtures being served with water by the city and any other source of water supply or to maintain any sanitary fixture or other appurtenances of fixtures which by reason of their construction may cause or allow backflow into the city of Lakeport water system and/or service of water pipes or fixtures of any user of the city of Lakeport water system. Each property owner shall complete a cross-connection control survey when requested by the city to do so.

B.    Backflow Prevention Devices. Wherever backflow protection has been found necessary on a user connection, then any and all connections to the city of Lakeport water system entering such premises, buildings, or structures shall be protected by approved backflow prevention devices and shall be subject to the following conditions:

1.    Backflow prevention devices shall be installed, tested and certified within sixty days of notification by the city to do so.

2.    A permit shall be obtained from the city building department prior to installing any devices; the permit fee shall be waived for a period of six months following adoption of the ordinance codified in this chapter.

3.    Only backflow prevention devices approved by the Foundation for Cross-Connection Control and Hydraulic Research of the University of Southern California shall be approved for installation.

4.    Backflow prevention devices shall be selected and installed in a manner prescribed in the State Department of Health Services Sanitary Engineering Section’s “Manual of Cross-Connection Control Procedures and Practices” or as prescribed by another acceptable authority and plans for which have been approved by the city engineer.

5.    The State Department of Public Health requires that the owners of any premises on which backflow prevention devices are installed, shall have the devices tested annually by a certified tester. Reports of such tests shall be filed with the city. These devices shall be serviced, overhauled or replaced whenever they are found to be defective or substandard and all costs of testing, repair and maintenance shall be borne by the water user.

6.    Backflow prevention devices shall be subject to occasional inspection and testing by the city.

C.    Type of Backflow Protection Required. The type of protection that shall be provided to prevent backflow into the city of Lakeport water system shall be commensurate with the degree of hazard that exists on the consumer’s premises. The type of protective device required (listed in an increasing level of protection) shall be: Double Detector Check Valve Assembly (DDC), Double Check Valve Assembly (DC), Reduced Pressure Principle Backflow Prevention Device (RP), or an Air-Gap Separation (AG). The water use may choose a higher level of protection than required by the city of Lakeport. The minimum types of backflow protection required to protect the public water supply, will be determined by the table below. Situations which are not covered in the table below shall be evaluated on a case-by-case basis and the appropriate backflow protection shall be determined by the city of Lakeport.

Table of Hazards and Protection Required

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.



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. An RP may be provided in lieu of an AG if approved by the city of Lakeport.



Premises where reclaimed water is used and there is no interconnection with the potable water system. An RP may be provided in lieu of an AG if approved by the city of Lakeport.



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. An RP may be provided in lieu of an AG if approved by the city of Lakeport.



Premises where there are irrigation systems into which fertilizers, herbicides, or pesticide are, or can be, injected.



Auxiliary Water Supplies.


Premises where there is an auxiliary water supply which is interconnected with the public water system. An RP may be provided in lieu of an AG if approved by the city of Lakeport.



Premises where there is an auxiliary water supply and there are no interconnections with the public water system. A DC may be provided in lieu of an RP if approved by the city of Lakeport.



Fire Protection Systems.


Premises where the fire system is directly supplied from the public water system and there is an auxiliary water supply on or to the premises (not interconnected).



Premises where the fire system is supplied from the public water system and interconnected with an auxiliary water supply. An RP may be provided in lieu of an AG if approved by the city of Lakeport.



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.



Dockside Watering Points and Marine Facilities.


Pier hydrants for supplying water to vessels for any purpose.



Premises where there are marine facilities.



Premises where entry is restricted so that inspection for cross-connection cannot be made with sufficient frequency or at sufficiently short notice to assure that cross-connections do not exist.



Premises where there is a repeated history of cross-connections being established or re-established.


D.    Protection Against Interstreet Flow. Two or more user connections supplying water from different street mains to the same building, structure or premises through which an interstreet flow may occur, shall have backflow prevention devices on each user connection.

E.    Violations. Violations of this chapter include but are not limited to the following:

1.    Failure of a water user to truthfully complete and return a cross-connection control survey to the city within fifteen days of the date that said survey was provided to the water user;

2.    Removing, bypassing or otherwise rendering inoperable a required backflow prevention device;

3.    Failure to provide the city with annual test results conducted by a certified tester within thirty days of notification to do so by city;

4.    Failure to install a backflow prevention device, have same tested by a certified tester and furnish said test results to the city;

5.    Failure to install a backflow prevention device with the proper permits;

6.    Failure to notify city prior to providing an auxiliary water supply to a property supplied by city water.

F.    Penalties for Violations. Violations of this chapter shall be cited as infractions. Citations shall be issued by the city police department. Any person convicted of an infraction for violation of this chapter shall be punished by:

1.    A fine not exceeding one hundred dollars for a first violation;

2.    A fine not exceeding two hundred dollars for a second violation of the same ordinance within one year;

3.    A fine not exceeding five hundred dollars for each additional violation for the same ordinance within one year.

Each such person is guilty of a separate offense for each and every day during any portion of which any violation of any provision of this chapter is committed, continued, or permitted to continue.

G.    Auxiliary Water Supply. No person shall provide an auxiliary water supply to a property without notification to city if said property is served by city water. (Ord. 736 (part), 1992)

13.08.050 Discontinuance of service.

A.    In addition to citing water users for violations of this chapter, water service to any premises may be discontinued by the city after notification if:

1.    Cross-connections exist on the premises;

2.    If any defect is found in an installed backflow prevention device;

3.    If a backflow prevention device has been removed, bypassed or rendered inoperable;

4.    If the water user fails to install a backflow prevention device when required by the city;

5.    If the user fails to submit a copy of the annual backflow device test results within the time specified.

B.    Water service will not be restored until such condition or defects are corrected unless the user posts a deposit with city in the amount of five hundred dollars. Three hundred dollars of the deposit will be refunded if user corrects the condition or defect which resulted in the water service being discontinued.

C.    If user fails to correct the condition or defect within thirty days of posting the deposit, the entire deposit shall be forfeited to city and the water service will again be disconnected until the condition or defect is corrected. (Ord. 736 (part), 1992)

13.08.060 Right of entry.

The city representative assigned to inspect premises relative to possible hazards shall carry proper credentials of his office, upon exhibition of which he shall have the right of entry, during usual business hours, to inspect any and all buildings and premises in the performance of his duty. This right of entry shall be a condition of provision of water service. (Ord. 736 (part), 1992)

13.08.070 Requirements for certification as a backflow prevention device tester.

A.    Each applicant for certification as a tester of backflow prevention devices shall file an application with the utility superintendent, together with a fee as may be established by the city council. The utility superintendent shall issue a backflow and testing certificate for qualified applicants.

B.    Competency in all phases of backflow prevention device testing and repair must be demonstrated by means of education and/or experience in order to obtain a city backflow testing certificate. The following are minimum requirements:

1.    Hold a valid certification from the American Water Works Association (A.W.W.A.) California-Nevada Section, or such other organization that may be recognized by the city of Lakeport and the health agency.

2.    Evidence that he has available the necessary tools and equipment to properly test such devices. (Ord. 736 (part), 1992)

13.08.075 Backflow prevention device tester responsibilities.

A.    The tester shall be responsible for the competency and accuracy of all tests and reports prepared.

B.    The city backflow testing certificate issued to any tester expires concurrently with his A.W.W.A. certification and may be revoked, suspended or not renewed by the city for improper testing, repairs and/or reporting. (Ord. 736 (part), 1992)

13.08.080 Remedies cumulative.

The procedures and penalties provided for in this chapter are cumulative and nonexclusive. (Ord. 736 (part), 1992)


    Prior ordinance history: Ord. 705.