Northstar Community Services District is responsible for ensuring the protection the public water supply from contaminants or pollution as a result of a backflow event through the customer’s water service connection. The cross-connection control program is a mandate by the State of California Department of Health Services requiring enforcement of Title 17, Section 7605 of the California Code of Regulations.

To ensure our water supply is protected from cross-connections, NCSD Engineering staff review construction plans for potential        cross-connections, while our Operations Team conducts field inspections of properties for potential cross-connections, inspects the installation of backflow prevention assemblies, and our Backflow Prevention Compliance Team monitors the operation of existing assemblies by requiring annual testing and conducts customer education on the importance of cross-connection control.
For a complete copy of the section of the District's ordinance pertaining to Backflow prevention, click here.

Backflow prevention assemblies must be tested each year, by a NCSD approved certified Backflow Prevention Assembly Tester.      You will receive several notices from the District in advance of your next test due date. The following links provide you with our list of certified testers that you may hire and our current test report that we request the testers to use but is not required if they have their own company form that follows the format of ours. Additionally, per section 8.06 of the District's Water Ordinance, you are allowed 30 days from receipt of notice from the NCSD to have the device(s) tested by a certified backflow prevention device tester.
Click here for a current list of preapproved testers.

Certificates for annual testing should be submitted through the District's Syncta Platform or via email to backflow@northstarcsd.org or Fax 530.562.1505.
Click here for the NCSD Backflow Form.