Please report suspected cross-connections to the Backflow Office by calling 330-489-3310.

Backflow Test Reports

All submitted Backflow Test Reports must be complete and legible.

Backflow Test Form

Backflow Regulation

Forms are no longer accepted by fax, but can be sent in by email, USPS, or dropped off in person.

Please mail to:
Canton Water Department
Engineering Office
2664 Harrisburg Road NE
Canton, OH 44705

You may also email it to the Engineering Office.

Find a Certified Tester

To find a certified tester for a backflow prevention device, check the list of registered contractors.

  1. Backflow
  2. Cross-Connection
  3. Backsiphonage
  4. Backpressure

Backflow can be described as "a reversal of the normal direction of flow within a piping system" or as "the flow of water or other liquids, mixtures or substances into the distribution pipes of a potable water supply from any source other than the intended source of the potable water supply."


The potential for a backflow condition occurring in a water system is all too likely in many of our homes, factories and public buildings. The existence of improper plumbing connections presents cross-connections that may, under backflow conditions, permit the water to flow the wrong way within the piping.


The probability of backflow taking place at any given outlet may actually be very small. But in view of a large number of service connections, the multiple cross-connections at each service connection and the potential for cross-connections to be created, then the probability becomes very significant and must be dealt with in a positive manner.