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Backflow Prevention

Backflow and Cross-Connection Prevention

PCWA works diligently to deliver safe and reliable drinking water to its customers. This effort begins with protecting our water supply sources and continues through the entire conveyance, treatment and distribution process until the water reaches the meter. The prevention of backflow into the public water supply is an integral part of ensuring safe drinking water.

Why We Administer A Backflow Prevention Program

In accordance with the requirements of the California Administrative code, Title 17, Chapter V, Sections 7583-7605, PCWA requires backflow protection on any treated water service with the potential for contamination of the public water supply.

Treated Water Connections Requiring Backflow Prevention Devices

  • Residential connections with a secondary source of non-potable water such as wells, ponds, springs, untreated irrigation water, and other waterways
  • All commercial connections
  • All landscape connections
  • All fireline connections
  • Any other conditions as determined by PCWA

Compliance Requirements - How to Remain Compliant

After the initial installation inspection and backflow prevention device testing by PCWA staff, customer must:

  • Maintain the privately-owned backflow prevention device
  • Submit annual test results to PCWA - PCWA will mail an annual test reminder letter, test form, and list of certified testers

Resource Links

California Health and Safety Code Title 17 Code of Regulations
PCWA Backflow Prevention Brochure

PCWA Backflow Prevention Assembly Test Report
Tester List for Western Placer County - County of Sacramento, Environmental Management Department
Tester List for Eastern Placer County - Truckee Donner Public Utility District
PCWA's Improvement Standards, Standard Specifications, and Standard Drawings
August 28, 2015 Customer Backflow Letter
Backflow Tester Notification Letter


Questions? For more information, contact PCWA Customer Services at (530) 823-4850, (800) 464-0030 or email

Placer County Water Agency
Placer County Water Agency - 144 Ferguson Road, P.O. Box 6570, Auburn, CA 95604 - Telephone: (530) 823-4850