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Rules for Taps, Plugs, Repair/Relay of Water Service Lines in New York City- NYC DOB



Installing a Tap or Wet Connection Only

If you are installing a tap or wet connection only (yellow form), you must also provide:

  • An approved New York City Department of Buildings site plan showing:

  • Plumbing riser diagram showing the required service size;

  • Existing fronting City main, proposed service connection, and the length of the connection; and

  • Schedule B

  • A letter of approval or exemption for a backflow prevention device, if applicable (see Backflow Prevention Devices).

  • If connecting to a private or internal water main, provide a consent letter from the private/internal water main owner.

Plugging a Tap or Wet Connection Only

If you are plugging a tap or wet connection only (white form), you must also provide a notarized affidavit from the property owner.


Plugging or Installing a New Tap or Wet Connection

If you are plugging and installing a new tap or wet connection (blue form), you must also provide the following:

  • A fixture count of the entire property

  • In case of upgrading the size of the tap of the existing fire service, an approved New York City Department of Buildings site plan with plumbing riser diagram showing the new required service size

  • A letter of approval or exemption for a backflow prevention device if applicable (see Backflow Prevention Devices)

Repair/Relay of a Water Service Line

All repair/relay permit applications should now be filed online through the Permit and Review Information System (PARIS). If you are not already registered, visit PARIS and follow the instructions to create an account and profile. Please contact the PARIS/WSPS Support Line at 718-595-3088 or email paris@dep.nyc.gov with any questions.


If you are conducting a repair/relay of a water service line (pink form), you must also provide a fixture count of the entire property, which is required to determine the proper size of any relayed service line. Please note that while repairs may be performed with emergency permits from the New York City Department of Transportation, a DEP permit is required for all relays. Repairs are not permitted on lead service lines; relay is required in all cases where lead is present. In addition, service connections 5/8-inch or greater must be plugged and a new tap must be installed that is properly sized for the fixture count.

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