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One of the many threats to our drinking water supply is known as a Cross-Connection (CC). A CC is the point at which a non-drinking water substance can possibly come in contact with drinking water. Connections such as lawn sprinkler systems or fire sprinkler systems can easily allow contaminants to enter potable (drinking) water lines, via backflow, if they are not properly equipped with Department of Health (DOH) approved backflow preventers. Citizens are often unaware of the potential danger that can lurk in their pipes by improperly installing water-using equipment that allow backflow.

Backflow, caused by back siphonage and/or backpressure, is the unwanted reverse flow of non-potable water back into a water system. Backflow can allow bacteria, chemicals or physical contaminants to enter the water system if CCs are uncontrolled. The City of Woodland’s Water Department takes every precaution possible to prevent CC backflow from entering our distribution system.

The City’s Cross-Connection Control (CCC) Program ensures that customers eliminate CCs whenever possible and control CCs that can’t be eliminated by installing Department of Health (DOH) approved backflow preventers. To better protect public health, the Washington State DOH has revised the CCC regulations for public water systems. All public water systems are required to develop and implement CCC programs.

For electronic submission of back flow test reports, click here to email a PDF copy of the test report.

If you have questions regarding Cross-Connection Control or would like a list of currently approved backflow device testers, please call (360) 225-7999.

The City of Woodland’s Water Department has created this information to inform you of the potential threat of cross-connection (CC).  The following information consists of the City of Woodland’s adopted ordinances, Washington Administrative Code (WAC) 246-290-490, brochures on CC and common water terminology definitions.

Helpful Information

pdf icon Cross Connections Can Create Health Hazards Pamphlet
pdf icon Lawn Irrigation Systems and Backflow Prevention Pamphlet
pdf icon Residential Fire Sprinkler Systems and Backflow Prevention Pamphlet
pdf icon Premise Isolation