Short answer: The North Shore half of the town includes many of Nassau's communities without public sewer. The county lists 16 communities here as not publicly sewered; those homes use cesspools, septic tanks or I/A systems and can qualify for Nassau's S.E.P.T.I.C. grant, up to $35,000 per the program administrator (Nassau County Soil & Water Conservation District); the county page still lists $20,000; confirm at 516-364-5861.
Last updated: November 2026. Sewer status from the Nassau County Department of Health community list; areas and parcels from Nassau County GIS (2026-11-07).
Communities in the Town of North Hempstead and their sewer status
| Community | Sewer authority (county list) | Area (sq mi) | Median parcel (ac) |
|---|---|---|---|
| Albertson | Nassau County Department of Public Works | 0.68 | 0.14 |
| Baxter Estates (village) | Port Washington Water Pollution Control District | 0.17 | 0.23 |
| Carle Place | Nassau County Department of Public Works | 0.97 | 0.14 |
| East Hills (village) | Not publicly sewered | 2.24 | 0.35 |
| East Williston (village) | Nassau County Department of Public Works | 0.57 | 0.23 |
| Floral Park (village) | Nassau County Department of Public Works | 1.43 | 0.10 |
| Flower Hill (village) | Eastern part: Port Washington WPCD; western part: not publicly sewered | 1.64 | 0.35 |
| Garden City Park | Nassau County Department of Public Works | 1.0 | 0.13 |
| Glenwood Landing | Not publicly sewered | 1.35 | 0.19 |
| Great Neck (village) | Great Neck Water Pollution Control District | 1.37 | 0.17 |
| Great Neck Estates (village) | Not publicly sewered | 0.8 | 0.34 |
| Great Neck Gardens | Not on the county list | 0.22 | 0.18 |
| Great Neck Plaza (village) | Great Neck Water Pollution Control District | 0.31 | 0.17 |
| Greenvale | Not publicly sewered | 0.27 | 0.18 |
| Harbor Hills | Not on the county list | 0.12 | 0.24 |
| Herricks | Nassau County Department of Public Works | 0.58 | 0.14 |
| Kensington (village) | Great Neck Water Pollution Control District | 0.23 | 0.28 |
| Kings Point (village) | Not publicly sewered | 4.05 | 0.93 |
| Lake Success (village) | Lake Success Village | 1.87 | 0.31 |
| Manhasset | Not publicly sewered | 2.41 | 0.18 |
| Manhasset Hills | Not on the county list | 0.59 | 0.20 |
| Manorhaven (village) | Manorhaven Village | 0.63 | 0.10 |
| Mineola (village) | Mineola Village | 1.87 | 0.12 |
| Munsey Park (village) | Not publicly sewered | 0.5 | 0.25 |
| New Cassel | Nassau County Department of Public Works | 1.47 | 0.14 |
| New Hyde Park (village) | Nassau County Department of Public Works | 0.85 | 0.09 |
| North Hills (village) | Nassau County Department of Public Works | 2.77 | 0.31 |
| North New Hyde Park | Nassau County Department of Public Works | 2.01 | 0.12 |
| Old Westbury (village) | Not publicly sewered | 8.5 | 2.00 |
| Plandome (village) | Not publicly sewered | 0.5 | 0.36 |
| Plandome Heights (village) | Not publicly sewered | 0.19 | 0.22 |
| Plandome Manor (village) | Not publicly sewered | 0.62 | 0.52 |
| Port Washington | Port Washington Water Pollution Control District | 4.44 | 0.16 |
| Port Washington North (village) | Not on the county list | 0.5 | 0.14 |
| Roslyn (village) | Rosyln Village | 0.67 | 0.28 |
| Roslyn Estates (village) | Not publicly sewered | 0.42 | 0.40 |
| Roslyn Harbor (village) | Not publicly sewered | 1.18 | 1.00 |
| Roslyn Heights | Not publicly sewered | 1.47 | 0.20 |
| Russell Gardens (village) | Belgrave Water Pollution Control District | 0.18 | 0.24 |
| Saddle Rock (village) | Great Neck Water Pollution Control District | 0.28 | 0.32 |
| Saddle Rock Estates | Not on the county list | 0.08 | 0.19 |
| Sands Point (village) | Not publicly sewered | 5.8 | 1.33 |
| Searingtown | Nassau County Department of Public Works | 0.94 | 0.20 |
| Thomaston (village) | Great Neck Water Pollution Control District | 0.41 | 0.21 |
| University Gardens | Not on the county list | 0.19 | 0.26 |
| Westbury (village) | Nassau County Department of Public Works | 2.33 | 0.17 |
| Williston Park (village) | Not on the county list | 0.61 | 0.10 |
"Not on the county list" means the community isn't named on the health department's list; ask the town or village.
Rules that apply
- Contractors pumping, repairing or installing need a Nassau County Home Improvement License. See Nassau County regulations.
- Building permits: Town of North Hempstead building department; incorporated villages run their own.
- No county rule we found requires an I/A system for an existing home; S.E.P.T.I.C. upgrades are voluntary.
Frequently asked questions
Which parts of the Town of North Hempstead have no public sewer?
The Nassau County Department of Health lists these communities as not publicly sewered: East Hills, Flower Hill, Glenwood Landing, Great Neck Estates, Greenvale, Kings Point, Manhasset, Munsey Park, Old Westbury, Plandome, Plandome Heights, Plandome Manor, Roslyn Estates, Roslyn Harbor, Roslyn Heights, Sands Point. The list is by community, not street.
Is there a septic grant in Nassau County?
Yes. Nassau's S.E.P.T.I.C. program helps replace a cesspool or septic system with an approved nitrogen-reducing system, for properties outside existing and proposed sewer districts (with narrow exceptions). The amount is up to $35,000 per the program administrator (Nassau County Soil & Water Conservation District); the county page still lists $20,000; confirm at 516-364-5861.
Who issues permits for cesspool work?
Single-family septic work generally goes through the local building department (the town, or the village inside an incorporated village). Contractors need a Nassau County Home Improvement License.
Sources
Each source was re-read on November 7, 2026. Program amounts and rules change; the agency page is the authority.
- Nassau County DOH: Public sewer districts by community
- Nassau County GIS map service (place boundaries, tax parcels)
- Nassau County Soil & Water Conservation District: S.E.P.T.I.C. program (program administrator)
- Nassau County: S.E.P.T.I.C. program
- Nassau County: Septic FAQ
Have a cesspool or septic question on Long Island?
Submit a request and we match it to an independent, licensed Suffolk or Nassau County operator who serves your address. The operator contacts you to confirm the work and the price.
Request Service →