Find a licensed cesspool and septic company in Shelter Island, NY

Who licenses cesspool and septic companies in Shelter Island

• Septic work in Suffolk falls under the county's Liquid Waste license, which covers residential and septic tank work along with commercial, industrial and sewer drain treatment work.
• Suffolk's Liquid Waste license comes with endorsements for specific work, such as septic tank pumping and conventional septic system installation, and county law sets out ten of them.
• For the septic tank pumping endorsement, Suffolk requires proof that the company owns a dedicated pump or vacuum truck, among other items.
• Applicants for Suffolk's Liquid Waste license must document 5 of the last 10 years of employment with a licensed employer.
• The Suffolk Liquid Waste license fee of $400 includes one endorsement, each additional endorsement adds $200, and the application fee of $200.00 is non-refundable.
• Under Article 5 of Suffolk's Sanitary Code, no business other than a municipality may remove, collect, transport or dispose of sewage or other offensive material without a permit.
• Shelter Island's notice to contractors says every contractor or subcontractor working on the island, landscapers included, needs a town license.

State rules and the lookup steps: how to check a cesspool and septic company's license.

What the Town of Shelter Island requires

• Shelter Island's homeowners handbook says the Suffolk County Department of Health Services regulates septic system design and placement, while the New York State Department of Environmental Conservation and the Town Board regulate distance from marine or fresh waters.
• When a DEC permit or letter of non-jurisdiction, Suffolk County health approval or West Neck Water District approval is required, Shelter Island wants it with the building permit application.
• Shelter Island applicants fill out the town's Eligibility Verification / Conditional Commitment Application and submit it with documentation to the WQI Advisory Board, which evaluates it and makes a recommendation to the Town Board.
• Shelter Island's 2017 law opens the rebate to all owners of residential property in the town and treats the Suffolk County rebate as the primary rebate, paying up to the county's authorized maximum.
• Shelter Island's own documents give different rebate figures. The first, a Town Board resolution adopted on November 17, 2017 alongside the town's septic rebate law, set the rebate at up to $15,000.
• Shelter Island's later funding policy, dated August 1, 2023, names a different limit, a base grant of at most $12,000 per project.
• Suffolk's septic grants page lists (631) 749-0758 as the Town of Shelter Island's rebate contact.

The Town of Shelter Island Building Department handles permits (631-749-0772). Our Town of Shelter Island permit guide covers how to apply, inspections and certificates.

Homes in Shelter Island: what the Census shows

Across the Town of Shelter Island, villages included, the median home was built in 1980, and 28% of homes were built before 1960, 23% before 1940. 96% of the 3,440 homes here are single-family detached houses, and 95% are owner-occupied.

What cesspool and septic work costs here

Labor is a large part of any price. Long Island septic tank servicers and sewer pipe cleaners earn a median $58,380 a year, from about $43,701 at entry level to $68,510 with experience. (New York State Department of Labor, wages updated to the first quarter of 2026.) Prices come from written estimates; more in the cesspool and septic cost guide.

• New York's State Septic System Replacement Fund can reimburse property owners up to 50% of the eligible costs of a septic system project, with no more than $10,000 paid per property.
• Official pages give different amounts for Suffolk County's Septic Improvement Program grant. The county's own program page says it provides installation grants of up to $20,000 per property, depending on whether the project qualifies.
• The state Environmental Facilities Corporation describes the Suffolk grant differently: a base of up to $10,000, plus up to $10,000 more for a pressurized shallow drain field ($5,000), for eligible low to moderate income applicants ($5,000), or both.
• Suffolk's septic grants page says owners in the Towns of East Hampton, Shelter Island and Southampton may be eligible for additional funding to replace an existing septic system with an I/A system.

Before you hire in Shelter Island

• Ask for the license number the work needs here (see who licenses cesspool and septic companies above), and check it before you sign.
• Ask who files with the Town of Shelter Island Building Department, and who books the inspections.
• What did you find, in writing: the type of system, its condition and the water level?
• If I replace the system, does the design qualify for the grant programs that apply here?