Backflow prevention devices are an important component of our drinking water protection program and are legally mandated under the New York State Sanitary Code and the Rules of the City of New York for those businesses identified as posing a risk to the public water supply.

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Once initial installation and testing are finalized, you are required to have your backflow prevention device tested every 12 months by a certified tester. You will receive a notification letter in the mail when your backflow prevention device is due for its annual test. Failure to perform this annual test could result in fines or the disconnection of your water service. For the annual test, the test form needs to be filled out by the certified tester and signed by an LMP.

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Property owners must hire a Licensed Master Plumber to install a backflow prevention device. Tenants are not responsible for managing the installation or maintenence of backflow prevention devices.

Once your backflow prevention device is installed and tested initially, you are required to have it tested every 12 months by a certified tester. You will receive a notification letter in the mail when your backflow prevention device is due for its annual test. Failure to perform this annual test could result in fines or the disconnection of your water service. For the annual test, the test form needs to be filled out by the certified tester and signed by an LMP.

American Institute of Architects (AIA) AIA NY Chapter Center for Architecture 536 LaGuardia Place New York, NY 10012 (212) 683-0023 architectfinder.aia.org

If your property is required to have a backflow prevention device and has multiple water service lines, you must install a device on each line.

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Unless they receive a specific exemption from DEP, the following types of businesses and properties are required to install and use backflow prevention devices:

As long as DEP has certification in writing from a Licensed Master Plumber (LMP), Professional Engineer (PE) or Registered Architect (RA) that a device is in the process of being installed, you will not receive a Notice of Violation.

You must ask the Professional Engineer (PE) or Registered Arquitect (RA) who made the design plans to send a record drawing of the backflow prevention device along with an initial test report of the device to DEP for review.

Recently, I received an order to install a backflow prevention. The 30-day installation period has nearly expired. How can I avoid a Notice of Violation?

For testing of a newly installed device, the test form should be filled out by a certified tester and signed by an LMP (if the certified tester is not already an LMP, they must report to one), and the RA or PE who submitted the initial backflow prevention plan. The signed test report should be submitted to DEP within 30 days of installation.

All backflow prevention forms should be filled out by the appropriate trades professional. You can access all backflow prevention forms by visiting Backflow Prevention Devices.

Exemptions must be filed by a Professional Engineer (PE) or Registered Architect (RA) on behalf of the property owner. The PE or RA will need to provide all required information in a typed letter on their letterhead and fully state that all necessary exemption conditions have been met. All letters must be sent to DEP for approval.

The Association of Contracting Plumbers of the City of New York, Inc. 535 8th Ave, 17th Floor New York, NY 10018 (212) 481-4580 http://www.acpcny.org info@acpcny.org

After the LMP installs the device, you are required to have a New York State certified tester test your device to ensure it was installed properly. For a list of certified testers, visit NY State Department of Health Certified Backflow Testers. It may be the case that your LMP is also a certified tester.

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You may also have your Registered Architect or Professional Engineer consult our Backflow Prevention Risk Assessment Guide to determine whether or not your property requires a backflow prevention device. If your property or business type is not included in the above list and you have a specific question about your legal requirements, please call 311 to have your inquiry directed to DEP.

To determine whether or not your property requires a backflow prevention device, hire a Licensed Professional Engineer (PE) or Licensed Registered Architect (RA).

To install a backflow prevention device, you must hire a Professional Engineer (PE) or Registered Architect (RA) to prepare a backflow prevention plan for your property. The PE or RA will send the plans to DEP for approval. If the plans are approved, DEP will notify you via mail. You will then need to hire a Licensed Master Plumber (LMP) to install the device.

If you need to have a newly installed device tested, the test form should be filled out by a certified tester and signed by a Licensed Master Plumber and the Registered Arquitect or Professional Engineer who submitted the initial backflow prevention plan. The signed test report should be submitted to DEP within 30 days of installation.

Backflow prevention devices prevent contaminated water or chemicals from flowing back into the public drinking water supply system. Certain types of properties are legally mandated to install and operate backflow prevention devices. To learn about the backflow prevention device installation and application process, visit Backflow Prevention Devices. For general water and sewer information, visit Water & Sewer Forms.