Backflow Testing: What is It and Why is It Necessary?

Seattle Sewer Backflow Testing

Backflow Testing: What is It and Why is It Necessary?

January 27, 2018

Backflow prevention and testing is a necessity for apartment and condominium buildings, restaurants, and other public places. Local municipal codes often require annual testing, so if your property or business needs professional help, call Best Plumbing! We provide backflow prevention devices and testing in the greater Seattle area.

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.

Backflow Prevention and Testing

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. You can be fined if testing is not completed on time, or the water supply to your property or business might be cut off. That is why we recommend scheduling testing well ahead of time.

Fortunately, Best Plumbing is available to help! We provide a variety of commercial and residential services in Seattle and Bellevue, including backflow prevention device installation and testing. Call (206) 785-2360 or submit a contact form online to schedule testing for your business or property.

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