Water Service Connections & Private Water Mains

Visit our Borough Water and Sewer Offices to obtain water and sewer records and for general assistance with water and sewer permitting and approvals. For other general information about water and sewer permitting forms, go to Water and Sewer Forms.

Rules Governing and Restricting the Use and Supply of Water

Title 15 of the Rules of the City of New York Chapter 20 can be used to review the rules governing the permits, taps, water service line, backflow prevention devices, meters, air conditioner, refrigeration, inspection, fire hydrant use and enforcement.

Download Title 15 of the Rules of the City of New York Chapter 20

Permits for Tap, Plug, Wet Connection, Repair/Relay of Water Service Line

Download the Permit Application for Tap, Plug, Wet Connection, Repair/Relay of Water Service Line

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 Cross-Connection Controls).
  • 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 Cross-Connection Controls)

Repair/Relay of a Water Service Line

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" or greater must be plugged and a new tap must be installed that is properly sized for the fixture count.

Tap Card Form for Licensed Master Plumbers (Self-Certification)

For self-certified work (work not inspected by DEP), the Tap Card Form provides documentation that the permitted work has been completed in accordance with all standards and rules. Currently, all work on domestic service lines that are two inch or less is self- certified. This tap card must be completed by the Licensed Master Plumber authorized to do the work and returned to DEP within 15 days from the permit expiration date. The Tap Card is a requirement of the self-certified permit process and failure to submit this Tap Card may result in the suspension of new permits.

The Tap Card Form may be submitted in the following ways:

  • Electronically via the Water and Sewer Permitting System (WSPS): A Tap Card Web form is available for both online permits and paper permits on WSPS. Please note all Tap Card connected to online permits MUST be submitted online as well. For more information on WSPS and how to register please visit Water and Sewer Permitting System.
  • In-Person Delivery: to DEP Borough Record Office

Building a Private Water Main

Application for Approval to Build a Private Water Main

This form must be filed by the owner of the proposed private water main to obtain approval from DEP to build a private water main.

Download the Application for Approval to Build a Private Water Main

Items for a Pre-Construction Meeting for Private Water Main

A pre-construction meeting is required after a Private Water Main Plan has been approved and before construction can begin. Pre-construction meetings must be scheduled at least 15 days prior to initiating construction. The items in the attached checklist must be brought to the pre-construction meeting.

Download the Checklist: Items for Pre-Construction Meeting for Private Water Main

Missing Owner Private Water Main Affidavit

This affidavit must be submitted when applying for a house connection to a private water main in cases where the owner of the private water main cannot be contacted.

Download the Missing Owner Private Water Main Affidavit

Hydrant Flow Tests

Application for a Hydrant Flow Test

Hydrant flow tests determine the pressure and flow adequacy of the NYC Water Supply System at a specific location. Use this process to request DEP to conduct a hydrant flow test:

  1. Visit our e-Permits Portal and follow the instructions to create an account and profile. Download the e-Filing Hydrant Flow Test Applications User Manual for additional instructions.
  2. To register for the e-Permit Portal, Professional Engineers and Registered Architects must download a Water and Sewer Permitting System (WSPS) Authentication Form. Forms must be signed, sealed, and notarized. You will only need to register once to use the portal. Once completed, email the form to wsps@dep.nyc.gov and mail a hard copy to:
    • NYC Department of Environmental Protection
      ATTN: Registrations (WSPS/BWSO)
      59-17 Junction Blvd, 3rd Fl., Low-Rise
      Flushing, NY 11373

Please contact the WSPS Support Line at 718-595-3088 or wsps@dep.nyc.gov with any questions.

Hydrant Water Use Permit

Application for a Hydrant Water Use Permit

Businesses wishing to use water from a City fire hydrant require a Hydrant Water Use Permit from the Department of Environmental Protection. This permit grants access to hydrant water for a specific period of time and requires payment in advance on a ‘per day of use’ basis. See Title 15 of the Rules of the City of New York Chapter 20.

Download the Application for a Hydrant Water Use Permit