The purpose of the this program is to protect the public health from chemical or bacterial contamination resulting from backsiphonage or backflow conditions in water systems by enforcing regulations pertaining to cross-connections between potable and non-potable water.

• Email your completed Backflow Assembly test results form to our office ([email protected])

• View the Cross-Connection Prevention Program Frequently Asked Questions

• Become a Certified Backflow Prevention Assembly Tester

  • Application for a Backflow Prevention Assembly Tester Certification

• References for Testers and Assembly Owners/Operators

  • List of USC Approved Backflow Assembly List

  • Certified Backflow Testers List

  • General Installation Standard for a Reduced Pressure Principle Backflow Assembly

  • General Installation Standard for a Double Check Backflow Assembly

  • USC Foundation for Cross-Connection Control

  • Title 22 CCR

  • EPA Cross-Connection Manual

  • Pressure Vacuum Breaker Policy

  • County of San Luis Obispo Ordinance 8.30

  • County of San Luis Obispo Cross-Connection Program Policy and Procedures