FOR SMALL COMMUNITY WATER SYSTEMS
Water provided by a public water system may be contaminated via cross connections within the distribution system. The purpose of the cross-connection control program is to reduce the hazard of contamination of the public water system by identifying actual and potential cross connections and taking action to protect the system from these hazards. This is accomplished by installing backflow prevention assemblies where hazards are identified; or ensuring that water-using equipment on the premises is installed in accordance with plumbing code requirements and good practice.
The Cross-Connection Control Policy Handbook requires that each public water system have a cross connection control program. This handbook replaces the Title 17 Cross-Connection Control requirements.
For more information regarding the Cross-Connection Control policy, see the California Drinking Water Program website: Cross-Connection Control Policy Handbook (CCCPH) | State Water Resources Control Board