Short answer: Patchogue is split: about 17% of its land is inside Patchogue Village Sewer District and the rest relies on cesspools, septic tanks and I/A systems.
Patchogue in numbers
| Town | Town of Brookhaven |
|---|---|
| Village | Village of Patchogue |
| Area | 2.34 sq mi |
| In active sewer district | 17% · Patchogue Village Sewer District |
| In proposed district | 0% |
| Groundwater zone | Zone VI 100% |
| FEMA flood zone | 20% |
| One-family lots / median | 2,077 / 0.22 ac |
| One-family lots outside active sewer districts | about 1,613 |
Computed 2026-11-07 from Suffolk County GIS (hamlet boundaries, sewer districts, groundwater management zones, FEMA flood zones, protection areas, tax parcels). Shares are of land area; a district boundary is not a hookup, and some village-run systems are missing from the county layer. Method and full table.
Sewer coverage
Patchogue is split: about 17% of its land is inside Patchogue Village Sewer District and the rest relies on cesspools, septic tanks and I/A systems. Counting lots instead of land: about 1,613 of the 2,077 one-family lots touching Patchogue lie outside any active sewer district, and those homes rely on on-site systems. Neighbouring areas: Blue Point (0% sewered, median lot 0.28 ac); North Patchogue (0% sewered, median lot 0.20 ac); East Patchogue (8% sewered, median lot 0.30 ac). By active-sewer share Patchogue ranks 29 of the 165 Suffolk hamlets and villages we measured.
Groundwater, lots and flood exposure
Groundwater management Zone VI: Article 6's minimum lot for a new home on an on-site system here is 40,000 sq ft, unless the density is met another way or an exemption applies. County parcel records show 2,077 one-family lots touching Patchogue, with a median of 0.22 acres (about 9,700 sq ft), below that minimum and the 140th-largest median lot in our Suffolk table. 20% of the land is in FEMA's 1%-annual-chance flood zone.
For most Patchogue homes the main running cost is pumping; when a cesspool fails, the replacement must include at least a septic tank, and grants can cover most of an I/A system. With 20% of the land in the flood zone, ask whether groundwater flows back into the cesspool after pumping; in Suffolk that is a failed-system condition.
Who handles what in Patchogue
- Building permits: Village of Patchogue
- Sewer: Patchogue Village Sewer District
- System approvals and grants: SCDHS, 631-852-5700 (permits) / 631-852-5811 (grants)
Frequently asked questions
Is Patchogue on public sewer?
Partly: about 17% is inside Patchogue Village Sewer District; the other 83% relies on cesspools, septic tanks and I/A systems.
Can Patchogue homeowners get septic grants?
Yes, if the home isn't sewered and isn't in a proposed sewer district: up to $20,000 from Suffolk and up to $25,000 from the state.
County rules, licensing and grant steps: Town of Brookhaven overview, septic grants, replacement rules. More in Brookhaven: Holtsville, Bellport.
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 Sanitary Code, Article 6 (amended 12/1/2020)
- Suffolk County: Septic Improvement Program information
- Suffolk County: SIP property eligibility lookup
Need cesspool or septic work in Patchogue?
Submit a request with your address. We match it to an independent, licensed Suffolk County operator who serves that address; the operator confirms the time and price with you.
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