Testing Dates

Testing Dates for Backflow Prevention Assemblies - Deadline July 31st


Customers with irrigation systems or other actual or potential cross-connections are required by state law, according to WAC 246-290-490, to have their backflow prevention assemblies tested on an annual basis. District customers with backflow prevention assemblies can have their tests completed, and reports submitted to the District, at any time between January 1st and the end of July, but they must be completed by July 31st of each year. Reports submitted after the July 31st deadline will be subject to fines and/or disconnection.