What is backflow?

Backflow is when contaminated water has reversed flow and entered clean water lines. It can occur at any cross-connection between clean and dirty water lines and is typically caused by a significant change in water pressure —such as from a burst water main. The dirty water may contain hazardous materials like human waste, pesticides, or chemicals, so it poses a serious health concern.

Why do I need to do this test?

Some homeowners are required to have their backflow assembly tested 1x per year by San Mateo County or Santa Clara County. These homeowners typically have a new home or may have a pool, internal sprinkler system, external sprinkler system or a well onsite. If you don’t have your backflow tested 1x per year, you could subject yourself to fines of $500 per day and the county or water purveyor may decide to shut off your water source.

How do I prevent backflow?

A safety device can be installed to prevent backflow from occurring. In the case of an unexpected or dramatic change in water pressure, this device will stop dirty water from entering the clean water supply. However, this device must be properly installed and tested to ensure that the clean water line remains free of contaminants. Municipal codes require annual testing of backflow prevention devices to ensure that they are functioning properly. 95% of the residents we test pass their test with out any issues. If your backflow assembly is in need of repair or replacement, we’ll let you know and get you a quote before we do anything.

How do I test for backflow?

123Backflow is here to help! We a licensed and certified to test backflow assemblies and are able to to repair and fix backflow assemblies if they are not compliant with your county’s ordinances. We provide residential backflow testing in the San Francisco bay area, with a focus on the peninsula . You can schedule a test online or email us at inquiries@123backflow.com to schedule a test.