The BPU supplies water to nearly 48,000 area residents. The New York State Sanitary Code (Part 5 section 1.31) mandates that a community's water system must be free of all sanitary hazards, including unprotected cross connections which would allow contaminants to be introduced into the (potable) drinking water system by back-siphonage or back-pressure. The code also mandates that this cross connection control is the responsibility of the supplier of water (the BPU) and the water customer (you).

To assure that no water of questionable or unsuitable quality enters the public water system, the BPU will work with the customer to determine the degree of hazard that business poses to the system. The customer will be required to install an acceptable backflow prevention device; follow it up with appropriate testing, operation and maintenance and keep adequate records of its performance and repair.

Failure to comply with this program may constitute grounds for discontinuing water service at the discretion of the Water Resources Deputy General Manager and the General Manager.

Questions regarding this policy should be directed to (716) 661-1673.

1.) Do you already have a backflow device installed?

Remember, backflow prevention devices must be installed on all connections to the city water distribution system. The degree of hazard the service connection poses to the public water supply will determine what type of device will be required. If the service connection poses a potential risk of contaminating the water supply a testable backflow device is required and the device must be tested annually by a New York State Certified Tester. All test reports must be submitted to the Jamestown BPU Water Engineering Department upon completion of the test. Below is a link for a list of NY State Certified Testers in Chautauqua County as well as a link for the Test report - form DOH-1013.

Are you not sure if there is a backflow preventer in your facility? Here are some clues to help you figure it out:

  • The backflow preventer that is of primary concern to the Jamestown BPU is the one located next to the water meter on the building side for each water service that connects your facility to the city water distribution main.
  • Below are two examples of what the backflow preventer may look like (it varies per device manufacturer).

  • On the left is an image of a DCV (Double Check Valve) backflow preventer

    On the right is a RPZ (Reduced Pressure Zone) backflow device.

  • Look for the name of the manufacturer on the device. For a list of approved backflow prevention device manufacturers, you may look on the NYS Department of Health website

2.) Will you be installing a backflow prevention device?

3.) Do you have an active exemption from installing a backflow preventer?

For more information, you may look at the New York State Department of Health’s Cross-Connection Control Program page at

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