
The State of California requires backflow prevention assemblies be installed on all hazardous cross-connections to help keep our water supply safe. These assemblies must be tested and certified every year to ensure that they are working properly.
You as a homeowner are responsible for hiring a licensed backflow tester to perform the annual test and certification of the backflow assembly(s) on your property.
Testing reminder letters are sent out starting in October of the testing year and tests are due no later than November 3rd.
Late notices of non-compliance will be sent out November 4th.
We at PKWC have contracted with a third party to help manage the collection of backflow tests for our Cross Connection Control Program. BSI provides a web-based tracking program for backflow testing.
WHAT THIS MEANS FOR YOU THE CUSTOMER:
BSI Online (888) 966- 6050 or our office at (707)539-6397
A cross-connection is an interconnection or possible interconnection (permanently or temporarily) between a potable water supply (water safe for drinking) and a non-potable supply (not safe for human consumption).
Cross-connections can occur between a potable water supply and private irrigation systems, fire sprinkler systems, well systems, and any other pipe systems that receive the potable water supply.
What is Backflow?
Backflow is an unintended or unwanted reversal of water flow or other substances through a cross connection into a water system's distribution. Backflow can result in a potentially serious public health hazard.
Backflow occurs when a loss in water pressure (commonly due to a fire hydrant being opened, a water main break or simply abnormally high water usage)
PKWC has a scheduled flushing of the mains in your area, Tuesday, 11/18/2025.
Regular flushing of the water mains is an important part of maintaining our water system to provide you with the best water services possible. Thank you for your patience & cooperation during this procedure.
Penngrove Kenwood Water Company will do our best to minimize the length of time your services may be disturbed.