The City of Commerce has a well-established and robust backflow prevention program that helps ensure the safety of its public water supply.
City of Commerce property owners are responsible for installing, testing, and maintaining backflow prevention devices and must comply with the city's requirements to avoid penalties. Ensuring timely testing, maintenance, and repair of backflow devices is crucial for protecting both individual properties and the public water system. Non-compliance can result in fines, civil liabilities and the disruption of water service.
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The City of Commerce enforces backflow prevention measures to protect its potable water system from contamination. These measures are implemented under the authority of the California Code of Regulations, Title 17, and the City's Cross-Connection Control Program. The program aims to prevent backflow incidents by identifying potential cross-connections and ensuring the installation and maintenance of appropriate backflow prevention assemblies (BPAs). The City requires backflow prevention devices for water mains 1½ inches or less in diameter.
1. Responsibilities of Property Owners
Installation & Maintenance: Property owners must install and maintain approved BPAs at service connections where potential hazards are identified. The City requires that BPAs meet the standards set forth in the Cross-Connection Control Program.
Annual Testing: BPAs must be tested at least once per year by a certified backflow prevention tester. Test results must be submitted to the City for record-keeping and compliance verification.
Repairs & Replacements: If a BPA fails the annual test, it must be repaired or replaced immediately. Repairs can only be performed by a certified backflow prevention tester.
2. Scenarios Requiring Backflow Prevention Assemblies (BPAs)
The City requires BPAs in various scenarios to protect the public water supply:
Irrigation Systems: To prevent contaminants from entering the potable water supply through irrigation lines.
Swimming Pools: To prevent contaminants from entering the potable water supply through pool systems.
Fire Sprinkler Systems: To prevent contaminants from entering the potable water supply through fire suppression systems.
Auxiliary Water Sources: Properties with alternative water sources like wells or cisterns must install backflow prevention devices to prevent cross-contamination.
3. Testing & Maintenance Requirements
Annual Testing: All BPAs must be tested annually by a certified backflow prevention tester to ensure they are functioning correctly. Test results must be submitted to the City for record-keeping and compliance verification.
Test Report Submission: Test results must be submitted to the City within the specified time frame. The City provides a designated backflow data management system or approved reporting forms for this purpose.
Repairs & Replacements: If a BPA fails the test, it must be repaired or replaced immediately. Repairs can only be performed by a certified backflow prevention tester.
4. Approved Devices & Certified Testers
Approved Devices: Only backflow prevention assemblies that are approved by recognized standards agencies, such as the Foundation for Cross-Connection Control and Hydraulic Research at USC, may be installed. Backflow prevention assemblies for domestic lines must also meet the “lead free” requirements per Health and Safety Code (HSC) section 116875.
Certified Testers: Testing must be conducted by individuals certified by the City or a recognized certifying body. A directory of certified testers is available upon request from the City.
5. Enforcement & Penalties
Non-Compliance: Failure to install, test, and maintain the required BPAs may result in the disconnection of water service. Water service will not be restored until such conditions or defects are corrected to the satisfaction of the City.
Penalties: Late submission of test reports may result in penalties, including late fees or other enforcement actions as determined by the City.
