What is backflow?
Backflow is the undesirable reversal of the flow of water or mixture of water and/or gases and other substances into the water distribution system. Common causes of backflow are water main breaks, pressure loss in the distribution system, and high demands on the water system caused by firefighters during a fire. The most common cause is due to an unattended garden hose left in a sink or bucket.

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1. Why is backflow protection necessary?
2. What is backflow?
3. Who is responsible for backflow protection?
4. Where is backflow protection needed?
5. When is backflow protection required?