Short answer: About 4% of the Town of Huntington's land is inside an active sewer district on the county map, mostly Huntington; about 51,545 of 54,555 one-family lots in the town's hamlets and villages sit outside any active sewer district. There is no town septic rebate, so the county and state grants are the funding.
Last updated: November 2026. Data computed 2026-11-07 from Suffolk County GIS; rules and programs re-read November 7, 2026.
Town of Huntington in numbers
| Land in active sewer districts | 4% |
|---|---|
| Land in proposed districts | 1% |
| Places with ~0% active sewer | 10 of 18 hamlets and villages |
| One-family lots outside active districts | about 51,545 of 54,555 |
| Groundwater zones (land share) | Zone I about 71%; Zone VIII about 28% |
| I/A systems installed (Oct 2024) | about 197, 4% of the county's 5,344; 7th of the ten towns |
| Town septic rebate | No |
| Town code on I/A systems | None found beyond the county rules |
Sewer districts and where the cesspools are
- Active districts (6): Huntington (about 2%), Strathmore @ Huntington Sewer District (about 2%), Southwest Sewer District (under 1%), Village of Northport (under 1%), plus 2 smaller.
- Proposed districts (2 polygons): Village of Northport - Expansion (under 1%), Huntington Station (under 1%). Homes inside a proposed district are excluded from the county and state septic grants.
By one-family lot count, the most lots outside an active district are in Dix Hills (about 7,375), Huntington Station (about 6,939), East Northport (about 5,995), Huntington (about 4,696), Greenlawn (about 3,665). Median one-family lots run from 0.20 acres in Huntington Station to 2.08 acres in Lloyd Harbor. In 12 of 18 places the median lot is smaller than Article 6's minimum for a new home on an on-site system in its main zone. Across the town, about 3% of the land is in FEMA's 1%-annual-chance flood zone; 11% is in a Special Groundwater Protection Area.
What the Town of Huntington adds
- Rebate: none listed by the county as of November 7, 2026.
- Town code: no town-wide I/A mandate found beyond the county rules as of November 7, 2026.
- Building department: Town of Huntington; villages with their own: Asharoken, Huntington Bay, Lloyd Harbor, Northport.
Every hamlet and village in the Town of Huntington
Land-area shares inside county sewer-district polygons; zone = main Article 6 groundwater zone; flood = FEMA 1%-annual-chance zone; lot = median one-family lot (acres). Linked names have their own page. Some village-run systems are missing from the county layer. Full table: sewer coverage by hamlet.
| Hamlet / village | Active sewer | Proposed sewer | Feasibility study | Zone | Flood | Median lot (ac) |
|---|---|---|---|---|---|---|
| Asharoken (village) | 0% | 0% | 0% | Zone VIII | 40% | 0.98 |
| Centerport | 2% | 0% | 0% | Zone VIII | 8% | 0.26 |
| Cold Spring Harbor | 0% | 0% | 0% | Zone I | 2% | 0.75 |
| Dix Hills | 3% | under 1% | under 1% | Zone I | 0% | 0.94 |
| East Northport | 0% | 0% | 0% | Zone I | 0% | 0.25 |
| Eatons Neck | 0% | 0% | 0% | Zone VIII | 14% | 0.36 |
| Elwood | 0% | 0% | 0% | Zone I | 0% | 0.46 |
| Fort Salonga | 0% | 0% | 0% | Zone VIII | 12% | 0.97 |
| Greenlawn | 0% | 0% | 0% | Zone I | under 1% | 0.26 |
| Halesite | 17% | 0% | 0% | Zone VIII | 9% | 0.31 |
| Huntington | 16% | 0% | 0% | Zone I | 1% | 0.33 |
| Huntington Bay (village) | 0% | 0% | 0% | Zone VIII | 14% | 0.66 |
| Huntington Station | 5% | 2% | 0% | Zone I | 0% | 0.20 |
| Lloyd Harbor (village) | 0% | 0% | 0% | Zone VIII | 10% | 2.08 |
| Melville | 11% | under 1% | 0% | Zone I | 0% | 0.35 |
| Northport (village) | 16% | 16% | 0% | Zone VIII | 2% | 0.27 |
| South Huntington | 3% | 0% | 0% | Zone I | 0% | 0.23 |
| West Hills | 0% | 0% | 0% | Zone I | 0% | 0.44 |
County rules apply on top: no cesspool-for-cesspool replacement since July 1, 2019, and an I/A system for new homes and major reconstruction since July 1, 2021. Details, licensing and grants: Suffolk County overview.
Frequently asked questions
How much of the Town of Huntington is on sewer?
About 4% of the land in the town's hamlets and villages is inside an active county sewer district, and 1% inside proposed districts; about 51,545 of 54,555 one-family lots in the town's hamlets and villages sit outside any active sewer district. A district boundary is not a connection.
Does the Town of Huntington have a septic rebate?
No town rebate is listed by Suffolk County as of November 7, 2026. Huntington homeowners use the county grant (up to $20,000) and the state grant (up to $25,000); the town had about 197 I/A systems by October 2024.
Who issues building permits for septic work in Huntington?
The Town of Huntington building department, except in the incorporated villages (Asharoken, Huntington Bay, Lloyd Harbor, Northport), which run their own. SCDHS approves the sanitary system itself.
Sources
Each source was re-read on November 7, 2026. Program amounts and rules change; the agency page is the authority.
- Suffolk County GIS Viewer map service (hamlets, villages, sewer districts, groundwater zones, flood zones, tax parcels)
- Suffolk County DHS presentation, 11/19/2024 (hosted by the Town of Shelter Island)
- Suffolk County DHS: Changes to wastewater practices effective July 1, 2019
- Suffolk County: Septic Improvement Program information
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