What Happens During Backflow?

Backflow testing and certification are crucial for ensuring the safety and quality of potable water supplies. Backflow occurs when water flow reverses in municipal and home piping, potentially allowing contaminants to enter the clean water system. This can happen due to changes in water pressure, such as during a drop in municipal supply pressure during a water main break. Backflow preventers are devices designed to stop this reversal but must be regularly tested and certified to ensure proper functioning.

Dangers Posed by Backflow

Backflow poses significant dangers as it can introduce harmful substances into the drinking water supply, such as chemicals, bacteria, or other contaminants. Cross-connections can occur where non-potable water sources connect with the potable water system. Contaminants may enter the system if there's a sudden change in pressure, such as during a fire hydrant use or a water main break. Ingesting or using contaminated water can lead to serious health issues.

In homes, irrigation systems are the most common source of contamination during backflow. These systems are connected to the home’s plumbing, and if backflow occurs while they are watering, groundwater can be pulled backward into the freshwater piping. In the worst cases, these systems will have automated fertilizer systems that allow liquid fertilizer and lawn treatment chemicals inside the home. 

What Is Backflow Preventer Testing?

Backflow preventer testing involves checking the mechanical components of backflow prevention devices to ensure they are functioning correctly. These devices should be tested annually or as recommended by local regulations. A certified technician assesses the device's integrity and operation during the test, checking for any signs of failure or wear. The technician may use specialized equipment to measure pressure differentials and ensure the device prevents reverse flow effectively.

Most backflow prevention devices are found in commercial properties. Owners of commercial properties and businesses should have their systems inspected to locate any backflow preventers. If they are present, owners must find a reliable plumber with special training and certification to inspect the backflow prevention device since not all plumbers qualify for this special service. 

Importance of Testing Backflow Preventers

Testing backflow preventers is vital for maintaining water quality and protecting public health. Regular testing ensures these devices function correctly, preventing contamination from entering the potable water system. It also helps identify and rectify potential issues before they become serious problems. By ensuring backflow preventers are in good working order, communities can safeguard their water supply, avoiding health risks and legal liabilities associated with waterborne contaminants.

When backflow occurs in a water system, the only way to make water safe again is to flush the affected portions of the system. This can result in thousands of gallons of treated water being wasted, driving up the cost of water treatment for the local community. Coincidentally, this is also why residual levels of treatment chemicals, especially chlorine, are left in water supplies as they sit in the pipes to lessen the likelihood of bacteria infection in undetected cases of backflow.  

About Lodder Brothers Limited

Lodder Brothers Limited offers comprehensive plumbing services for residential and commercial customers. Their teams are qualified for backflow testing, certification, and any other plumbing repair or installation a client may need. Call today for plumbing service in Guelph, ON. 

Contact Information:

Lodder Brothers Limited

500 Maltby Rd E Unit #1
Guelph, ON N1L 1G4
Canada

Dan Bernard
+1 519-836-6370
https://www.lodderbrothers.com/