City of Monrovia
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Backflow prevention is essential in protecting our drinking water from the dangers of backflow. Backflow Solutions, Inc. (BSI Online) administers our Backflow Prevention Program, ensuring backflow prevention devices are installed and maintained in compliance with federal, state, and local codes.
Not all water customers are subject to backflow device testing. You will receive a letter if you are required to participate in this testing process. Learn more about backflow and testing below.
Contact
For questions regarding your required backflow prevention testing, contact BSI Online at (888) 966-6050 or via email at support@backflow.com.