Cesspool & Septic Service in Ridge, NY: Sewer, Rules, Grants

Short answer: About 8% of Ridge lies inside Leisure Village/Ridgehaven Sewer District; everywhere else, wastewater stays on the lot.

Ridge in numbers

Town	Town of Brookhaven
Area	13.28 sq mi
In active sewer district	8% · Leisure Village/Ridgehaven Sewer District
In proposed district	0%
Groundwater zone	Zone III 100%
FEMA flood zone	1%
One-family lots / median	2,807 / 0.48 ac
One-family lots outside active sewer districts	about 2,503

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

About 8% of Ridge lies inside Leisure Village/Ridgehaven Sewer District; everywhere else, wastewater stays on the lot. By parcel count, roughly 2,503 of Ridge's 2,807 one-family lots sit outside an active district; that is the local cesspool and septic population, before counting unconnected lots inside districts. Next door: Upton (0% sewered, median lot 1.00 ac); East Shoreham (under 1% sewered, median lot 0.55 ac); Rocky Point (0% sewered, median lot 0.23 ac). By active-sewer share Ridge ranks 37 of the 165 Suffolk hamlets and villages we measured.

Groundwater, lots and flood exposure

Groundwater management Zone III: 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 2,807 one-family lots touching Ridge, with a median of 0.48 acres (about 20,900 sq ft), below that minimum and the 64th-largest median lot in our Suffolk table. Also mapped: 100% is in a Special Groundwater Protection Area; 56% is Pine Barrens Core; 44% is Pine Barrens Compatible Growth Area.

For most Ridge 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.

Who handles what in Ridge

Building and electrical permits: Town of Brookhaven
Sewer: Leisure Village/Ridgehaven Sewer District
System approvals and grants: SCDHS, 631-852-5700 (permits) / 631-852-5811 (grants)

Frequently asked questions

Is Ridge on public sewer?

Partly: about 8% is inside Leisure Village/Ridgehaven Sewer District; the other 92% relies on cesspools, septic tanks and I/A systems.

Can Ridge 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: Rocky Point, Middle Island.

Sources

Each source was re-read on November 7, 2026. Program amounts and rules change; the agency page is the authority.

Need cesspool or septic work in Ridge?

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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