What is backflow?

Backflow is the reverse flow of water, causing non-potable water to flow into the public water supply. Backflow can occur when changes in water pressure create a suction effect, forcing non-potable water into the City’s drinking water supply. For example, when a main water line breaks, the water pressure in the pipe is drastically reduced. The reduced pressure causes a suction effect and any substance in the pipe on the customer’s side is then drawn up into the system, contaminating the City’s water supply.

Show All Answers

1. What is backflow?
2. What is the difference between potable and non-potable water?
3. How do I prevent backflow?
4. How do I get my backflow tested?
5. What if my assembly fails the required test?
6. What are testing and tester registration requirements?