The District's Cross-Connection Control Program was created in accordance with federal and state regulations to reduce the risk of contamination from sources existing downstream of the District's potable water system by preventing, eliminating or controlling cross-connections.

Existing onsite plumbing arrangements or certain water related activities can contribute to creating an actual or potentially cross-connection hazard for the District's public water system and in most cases unknowingly to the user.  Due to the commonality of complex onsite plumbing systems and lack of knowledge of cross-connection hazards associated with typical water use, and when a hazard is identified on the premises the customer will be required to install an approved backflow prevention assembly at the District's water meter.

Backflow Preventation Installation and Testing

Backflow Prevention Assembly (BPA) is a device installed downstream of the water meter that only allows water to flow in one direction.   It is the customers responsibility for the installation and certifiation of the BPA.  BPA are certified at the time of installation and annually thereafter.  Certificaiton of a BPA can only be completed by an American Water Work Assocication certified Backflow Prevention Assembly Tester.

Resources

BPA's are certified by University of Southern California - Foundation for Cross-Connection Control and Hydraulic Research.  The comprehensive list can be found at https://fccchr.usc.edu/list.html.

District preferred Reduced Pressure Principle BPA for potable water connections include:

Manufacturer         Model

Wilkins/Zurn           975XL2 | 975XL3 | 375XL | 375AST
Watts                           LF009 | LF909
Febco                           LF825Y 

District Ordinance 2024-3:

Contractors List:

Design Standards:

If you have any questions, please contact the District’s Operations Manager, Adam Brown at (530) 333-4356 ext. 110.