Short answer: No active county sewer district covers Aquebogue on the county GIS layer, and parcel planning here typically starts from on-site wastewater assumptions.
Aquebogue in numbers
| Town | Town of Riverhead |
|---|---|
| Area | 3.77 sq mi |
| In active sewer district | 0% |
| In proposed district | 0% |
| Groundwater zone | Zone IV 100% |
| FEMA flood zone | 10% |
| One-family lots / median | 970 / 0.57 ac |
| One-family lots outside active sewer districts | about 970 |
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
No active county sewer district covers Aquebogue on the county GIS layer, and parcel planning here typically starts from on-site wastewater assumptions. Counting lots instead of land: about 970 of the 970 one-family lots touching Aquebogue lie outside any active sewer district, and those homes rely on on-site systems. Next door: Jamesport (0% sewered, median lot 0.46 ac); Northville (0% sewered, median lot 0.67 ac); Riverhead (18% sewered, median lot 0.24 ac). By active-sewer share Aquebogue ranks 83 of the 165 Suffolk hamlets and villages we measured.
Groundwater, lots and flood exposure
Groundwater management Zone IV: 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 970 one-family lots touching Aquebogue, with a median of 0.57 acres (about 25,000 sq ft), above that minimum and the 41st-largest median lot in our Suffolk table. Also mapped: 10% of the land is in FEMA's 1%-annual-chance flood zone; 32% is in a Special Groundwater Protection Area.
For most Aquebogue 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 Aquebogue
- Building and electrical permits: Town of Riverhead
- System approvals and grants: SCDHS, 631-852-5700 (permits) / 631-852-5811 (grants)
Frequently asked questions
Is Aquebogue on public sewer?
Generally not: no active county sewer district covers Aquebogue on the county's map.
Can Aquebogue 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 Riverhead overview, septic grants, replacement rules. More in Riverhead: Riverhead.
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 Aquebogue?
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 →