Short answer: The county health department lists Eastern Flower Hill: Port Washington Water Pollution Control District (516-944-6100). Western Flower Hill: not publicly sewered. as the sewer authority for Flower Hill; properties the district can't connect still use on-site systems.
Flower Hill in numbers
| Town | Town of North Hempstead |
|---|---|
| Status | Incorporated village |
| Area | 1.64 sq mi |
| Sewer (county list) | Eastern Flower Hill: Port Washington Water Pollution Control District (516-944-6100). Western Flower Hill: not publicly sewered. |
| Parcels / median parcel | about 1,733 / 0.35 ac |
| Building permits | Village of Flower Hill |
Area and parcels computed 2026-11-07 from Nassau County GIS (place boundary; all tax parcels touching it, any use). Sewer status from the Nassau County Department of Health list of sewer districts by community, which is by community, not street.
Sewer status and lots
The county health department lists Eastern Flower Hill: Port Washington Water Pollution Control District (516-944-6100). Western Flower Hill: not publicly sewered. as the sewer authority for Flower Hill; properties the district can't connect still use on-site systems. Flower Hill covers 1.64 square miles; the roughly 1,733 parcels touching its boundary have a median size of 0.35 acres (about 15,200 sq ft). That is the 25th-largest median parcel of the 133 Nassau places we measured. Nearby: Munsey Park (not publicly sewered, median parcel 0.25 ac); Roslyn Estates (not publicly sewered, median parcel 0.40 ac); Plandome (not publicly sewered, median parcel 0.36 ac).
Grant and permits
Connected homes don't qualify for S.E.P.T.I.C.; a property in Flower Hill that the district documents can't connect may. Permits come from the Village of Flower Hill; the contractor needs a Nassau County Home Improvement License, and no county rule we found requires an I/A system for an existing home.
For Flower Hill properties, Nassau grant amount and no-stacking details are on the Nassau County overview and Long Island grants guide.
Who handles what in Flower Hill
- Building permits: Village of Flower Hill
- Sewer: Eastern Flower Hill: Port Washington Water Pollution Control District (516-944-6100). Western Flower Hill: not publicly sewered.
- S.E.P.T.I.C. grants: 516-364-5861 ([email protected])
Frequently asked questions
Is Flower Hill on public sewer?
The county health department lists Eastern Flower Hill: Port Washington Water Pollution Control District (516-944-6100). Western Flower Hill: not publicly sewered. as the sewer authority for Flower Hill; properties the district can't connect still use on-site systems.
Who issues permits for septic work in Flower Hill?
The Village of Flower Hill building department, with a contractor holding a Nassau County Home Improvement License.
Rules and grant steps: Town of North Hempstead overview, Nassau regulations, S.E.P.T.I.C. details. More nearby: Munsey Park, Roslyn Estates, Plandome, Plandome Manor.
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
Need cesspool or septic work in Flower Hill?
Submit a request with your address. We match it to an independent operator with a Nassau County Home Improvement License who serves that address; the operator confirms the time and price with you.
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