Grants & Rebates for Septic Systems

Qualify for Up To $40,000 in Grants & Rebates for Your Septic System Upgrade!

All of the following opportunities are available for the installation of your new Innovative/Advanced Onsite Wastewater Treatment System (I/A OWTS).

New York State Septic Grants

Maximum grant of $10,000 available for the installation or upgrade of new I/A OWTS systems on residential or commercial properties with less than 1,000 GPD of sewage flow.

Suffolk County Septic Grants

Maximum grant of $20,000 plus $10,000 in available loans at 3% interest over 15 years for the installation or upgrade to a new I/A OWTS System on residential property in Suffolk County.

East Hampton Town Septic Rebates

Maximum rebate of $20,000 available for residential and commercial projects. Restrictions apply based on location, environmental factors, and housing type.

Southampton Town Septic Rebates

Maximum rebate of $20,000 available for residential and commercial projects. Restrictions apply based on location.

Shelter Island Septic Rebates

Maximum rebate of $15,000 available for residential property only after applying for all available State and County grant opportunities.

How Much Do You Qualify For?

Schedule a FREE, no-obligations consultation with our experts who will identify every possible funding opportunity for your environmentally-friendly septic upgrade project.


The Bridgewater Environmental Services team is uniquely qualified to manage your sanitary improvement project. Our team brings decades of experience in environmental compliance, tech and automation, environmental land use, septic, grant & rebate handling, and installation to make sure your project is a success. Whether because of mandates, system failure, or environmental altruism, upgrading your sanitary system is the single largest positive environmental impact you can have on Long Island’s waterways.

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Septic systems are an essential component of any home or property that is not connected to a central sewer system. Over time, however, traditional septic or cesspool systems can become outdated, inefficient, and potentially harmful to the environment. That’s why many homeowners are considering upgrading to an advanced I/A OWTS septic system. But, is this upgrade worth the cost?

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