Dix Hills, NY Cesspool & Septic: Sewer, Rules, Grants

Short answer: About 3% of Dix Hills lies inside Strathmore @ Huntington Sewer District; everywhere else, wastewater stays on the lot.

Dix Hills in numbers

Town	Town of Huntington
Area	15.75 sq mi
In active sewer district	3% · Strathmore @ Huntington Sewer District
In proposed district	under 1%
Under feasibility study (not a district)	under 1%
Groundwater zone	Zone I 100%
FEMA flood zone	0%
One-family lots / median	7,654 / 0.94 ac
One-family lots outside active sewer districts	about 7,375

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 3% of Dix Hills lies inside Strathmore @ Huntington Sewer District; everywhere else, wastewater stays on the lot. By parcel count, roughly 7,375 of Dix Hills's 7,654 one-family lots sit outside an active district; that is the local cesspool and septic population, before counting unconnected lots inside districts. Next door: Deer Park (1% sewered, median lot 0.77 ac); Elwood (0% sewered, median lot 0.46 ac); Wheatley Heights (0% sewered). By active-sewer share Dix Hills ranks 51 of the 165 Suffolk hamlets and villages we measured.

Groundwater, lots and flood exposure

Groundwater management Zone I: Article 6's minimum lot for a new home on an on-site system here is 20,000 sq ft, unless the density is met another way or an exemption applies. County parcel records show 7,654 one-family lots touching Dix Hills, with a median of 0.94 acres (about 41,100 sq ft), above that minimum and the 17th-largest median lot in our Suffolk table. 3% is in a Special Groundwater Protection Area.

For most Dix Hills 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 Dix Hills

Building and electrical permits: Town of Huntington
Sewer: Strathmore @ Huntington Sewer District
System approvals and grants: SCDHS, 631-852-5700 (permits) / 631-852-5811 (grants)

Frequently asked questions

Is Dix Hills on public sewer?

Partly: about 3% is inside Strathmore @ Huntington Sewer District; the other 97% relies on cesspools, septic tanks and I/A systems.

Can Dix Hills 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 Huntington overview, septic grants, replacement rules. More in Huntington: Melville.

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 Dix Hills?

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.

Request Service →