Water Backflow Prevention Devices & Testing Requirements
Did you know that if you have a lawn irrigation system at your home, you’re required by Missouri state law to 1) have a backflow prevention device, and 2) test the device annually? Businesses also must follow these requirements.
In St. Peters, backflow prevention devices must be tested annually by a state-certified tester between April 1 and June 1.
Backflow prevention devices help protect you and our community. The mechanism prevents potentially contaminated water from coming back through the irrigation system and into your home or the public water supply. LEARN MORE ABOUT BACKFLOW PREVENTION.
Each backflow prevention device test report must be sent to your water supplier to ensure everything is working properly—Remind your irrigation service contractor to send a copy of the test report to your water provider. The test is required whether or not you plan to use your irrigation system.
A $10 administrative fee is required for each backflow prevention device test form you submit.
Search the Missouri Department of Natural Resources' list of state-certified testers.
Many businesses must have backflow prevention. Common examples are car washes, medical facilities, laboratories and buildings that have boilers, fire sprinkler systems or irrigation systems.
If you have any questions regarding backflow protection at your business or residence, call the City of St. Peters at ext. 1278 at either 636.278.2244 or 636.477.6600.