Nassau County Septic System Replacement Program

Nassau County Department of Health

Available Home Repair

About This Program

Nassau County Septic System Replacement Program is available to homeowners in Oyster Bay, NY.

Grant program to help income-eligible Nassau County homeowners replace failing septic systems with advanced nitrogen-reducing systems to protect water quality. Prioritizes homes near sensitive water bodies.

Grant covers majority of septic replacement costs

Official source site checked live on 2026-06-22.

Data last verified 2026-06-09. How we verify our data.

In Oyster Bay, NY, you can combine this program with other local help to cut your cost:

Key Details

  • Up to $30,000 for septic system replacement
  • Must install nitrogen-reducing system
  • Income-qualified homeowners prioritized
  • Protects Long Island water quality
  • Priority for homes near sensitive waters

How to Apply

Get free help applying Visit Official Program Page Track this program

(516) 571-3750

A grant-savvy contractor in Oyster Bay, NY can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.

You will likely need a contractor to apply

Projects like this almost always need a licensed contractor, and many grants ask for a written estimate as part of your application. Lining up a contractor in Oyster Bay early keeps your application moving.

Get matched with a contractor

Each program sets its own contractor rules. Check the official program page for exact requirements.

Your application paperwork

Documents you will likely need

  • Proof you own and live in the home (deed, recent mortgage statement, or property tax bill).
  • A government-issued photo ID for every owner on title.
  • Household income proof (recent pay stubs, last year's tax return, or benefit award letters for everyone in the home).
  • A written estimate from a licensed contractor for the work (many programs require this to apply).
  • Photos of the problem area or the work to be done.
  • The program's own application form, completed (use the official link or phone number on this page).
Download this checklist (PDF)

Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.

Deadline: Subject to funding availability

Questions about this program?

Ask us. It is free, and a real person answers within a business day.

Email us about this program

Frequently asked questions

How much can Nassau County Septic System Replacement Program provide in Oyster Bay, NY?

Up to $30,000 grant.

Who qualifies for Nassau County Septic System Replacement Program in Oyster Bay?

Nassau County Septic System Replacement Program is open to homeowners in Oyster Bay, NY.

How do I apply for Nassau County Septic System Replacement Program in Oyster Bay, NY?

Apply directly with Nassau County Department of Health using the official program link on this page or call (516) 571-3750. There is no middleman and no fee.

Need a Contractor for This Grant?

Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.

Get matched with a pro, free Browse Oyster Bay, NY contractors

Find More Programs in Oyster Bay, NY

This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.

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