Home > Backflow Prevention & RPZ Devices
The WSD is dedicated to backflow prevention to protect our users. All irrigation systems must have a RPZ device installed and it must be tested annually to comply with state laws.
If you have an inactive irrigation system. You must submit the below exemption to us at office@wascosd.org along with a photo to confirm the system is capped.
Click on each link below for more information.
Cross Connection Control Residential Brochure
Backflow Tester List – Cross Connection Control Device Inspectors