First, obtain an Underground Sprinkler Installation Permit from our Cross Connection Specialist.
You will need to properly install a backflow assembly approved by the Department of Health. Below you will find several installation diagrams. Each backflow assembly has specific installation requirements which may not work in all situations. Contact the City's Cross Connection Specialist, 509-967-5434, for assistance.
Once your device has been installed do not backfill. You will need to contact the City's Cross Connection Specialist, 509-967-5434, to have it inspected.
You are required to have your backflow assembly tested annually. The City will send a reminder letter 30 days prior to your annual test due date. Please contact one of the Certified Backflow Testers to have your test completed.