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A backflow prevention device must be installed to protect water supplies from contamination or pollution by backflow or backsiphonage (liquid being forced up by the pressure of the atmosphere) from a commercial property or dwelling unit into a City water main, private water main, or internal water main. A property owner must install an approved backflow prevention device in every water service pipe that has a potential cross connection hazard (a connection between a drinking water supply and a source of contamination). The installation must comply with the Rules Governing and Restricting the Use and Supply of Water established in Title 15 of the Rules of the City of New York (RCNY) Chapter 20, linked below under Additional Information.
In order to meet this requirement, a Licensed Professional Engineer or Registered Architect must submit an Application for Approval of Backflow Prevention Devices to the New York City Department of Environmental Protection (DEP) to install a Reduced Pressure Zone (RPZ) device or a Double Check Valve Assembly.
A building owner who fails to install a backflow prevention device as directed by DEP will be subject to the termination of the water supply, notices of violation, cease and desist orders, other civil and criminal actions and proceedings, fines, penalties, and other enforcement measures as described in section 24-346 of the New York City Administrative Code, linked below under Additional Information.
1.
Download and print the Application for Approval of Backflow Prevention Devices at the link above under Application Materials.
2.
Submit two copies of the application to the address listed below under Contact Information.
3.
If the application is found satisfactory, the applicant will receive an approved copy of the application.
4.
After receiving approval of the application by DEP, the user must obtain a permit to install the backflow prevention device from the New York City Department of Buildings (DOB).
This page provides general information only. The information does not address all relevant regulatory requirements of City, State or Federal Agencies, nor does it address requirements with which the business must comply on an ongoing basis. It is the business owner's responsibility to meet all City, State and Federal requirements. Failure to comply with all applicable laws and regulations may result in fines or in the suspension and/or revocation of licenses or permits, or other penalties as allowed by law.
Please note that this information is not legal advice; you can only obtain legal advice from a lawyer. For more information or assistance, please contact the issuing Agency, using the contact information above, or call 311 (or 212-NEW-YORK if outside of New York City).
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