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Sewer Permits & Sanitary Mark Out

Sewer Connection Permit Administration and Sanitary Mark out
(631) 854-4185
Normal Business Hours: 7 am to 3:30 pm
Utility Markout - "ONE CALL" - 1-800-272-4480

Subdivision Inspection
(631) 852-4191

Sewer Permits

About Sewer Connection Permits

The Sewer Permits Unit reviews, approves and issues sewer permits. Concurrent Suffolk County Department of Health Services review and approval of plans is also required. All sewer connections must be approved and an S-9 form issued in order to obtain the Department of Health Services’ approval and a Certificate of Occupancy from the respective towns.

Important Information:

  • All individual lots proposed for connection to sewer districts must have a survey marked up with the location of the existing sewer facilities available for connection. This is required by the Suffolk County Department of Health Services for the respective town to issue a building permit.
  • Concurrent Suffolk County Department of Health Services review and approval of plans is also required. All sewer connections must be approved and an S-9 form issued in order to obtain the Department of Health Services’ approval and a Certificate of Occupancy from the respective towns.

Do I need a sewage permit in Suffolk County?
If you are building or expanding your home or business, the Suffolk County Department of Health Services may require that you obtain a permit to ensure that sewage disposal systems and water supply connections are safe, satisfactory and in compliance with all health codes. For more information go to:
www.suffolkcountyny.gov/Departments/Health-Services/WWM

What do you need to know about Suffolk County sanitary code?
The Suffolk County Sanitary Code Article 6 also outlines the lots size, water supply, and sewage disposal system requirements when submitting a permit application for subdivisions or development maps which create or modify tax lots or lease parcels.

Utility Markout - "ONE CALL" - 1-800-272-4480

All individual lots proposed for connection to sewer districts must have a survey marked up with the location of the existing sewer facilities available for connection. This is required by the Suffolk County Department of Health Services for the respective town to issue a building permit.

As required by NYS, Suffolk County DPW must locate and mark the underground facilities when notified of a nearby excavation. The excavator must notify the designated "One Call" office of their proposed excavation with sufficient time to allow the required mark out.

Suffolk County Government

H. Lee Dennison Bldg

100 Veterans Memorial Hwy
P.O. Box 6100
Hauppauge, NY 11788

Riverhead County Center

County Road 51
Riverhead, NY 11901