Find a licensed cesspool and septic company in Oyster Bay, NY

Who licenses cesspool and septic companies in Oyster Bay

• Nassau's septic FAQ says installers must hold a Nassau County Home Improvement License issued by the Department of Consumer Affairs.
• Cesspool builders and cleaners are on the list of who must be licensed by Nassau Consumer Affairs.

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

What the Town of Oyster Bay requires

• Work on sewers, drywells and cesspools is among the projects the Town says generally require permits.
• The Town's waste disposal checklist calls for a Nassau County permit with a raised seal or an Oyster Bay Sewer District approval, plus a survey showing the septic tank's location and any overflow.
• Sewer hookups, leaching pools and septic tanks form one permit type on the Town's Building Division Portal.

The Town of Oyster Bay Building Division handles permits ((516) 624-6200 ext. 1). Our Town of Oyster Bay permit guide covers how to apply, inspections and certificates.

Homes in Oyster Bay: what the Census shows

Across the Town of Oyster Bay, villages included, the median home was built in 1957, and 63% of homes were built before 1960, 10% before 1940. 86% of the 103,686 homes here are single-family detached houses, and 89% 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.
• Nassau County offers homeowners or small businesses up to $20,000 in grants to install nitrogen-reducing septic systems. Tens of thousands of Nassau homes and small businesses are currently served by cesspools and septic systems.
• Nassau's grant pairs $10,000 of federal funds with $10,000 in State Septic System Replacement Grant funds, according to the state's Environmental Facilities Corporation.
• Nassau's grant may go to single-family and two-family homes, not-for-profits and small businesses whose existing sanitary design flow is 1,000 gallons per day or less, for an I/A system installed after March 1, 2018.

Before you hire in Oyster Bay

• 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 Oyster Bay Building Division, 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?