Photo: Zeete · CC BY-SA 4.0Living in Stewartsville, NJ: what to set up and who to call
Stewartsville has no town government of its own, so Warren County runs its elections and most services, and its children attend Greenwich Township School District. Aqua Nj - Phillipsburg reported one health-based violation to EPA in the last five years: a bacteria testing requirement (Revised Total Coliform Rule), beginning Aug 2025.
I’m new in town
What to set up in Stewartsville, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Stewartsville.
Power comes from JCP&L
JCP&L (Jersey Central Power & Light Co.), an investor-owned utility, serves all of Stewartsville. Its homes paid an average of 18.4¢ per kWh in 2025, about $145 a month (its average across New Jersey, for customers on its standard service). New Jersey lets you buy power from another supplier; 9% of JCP&L’s home customers do, and JCP&L still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Aqua Nj - Phillipsburg
Aqua Nj - Phillipsburg supplies almost all of Stewartsville. It draws ground water influenced by surface water and serves 26,686 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a bacteria testing requirement (Revised Total Coliform Rule), beginning Aug 2025. 83% of the 3,525 systems serving 10,001–50,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 1.3 ppb. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. NJ2119001.
5 home internet providers serve Stewartsville
100% of 248 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| Service Electric | Cable | 94% | 1,000/40 |
| T-Mobile | Fixed wireless | 80% | 25/3 |
| AT&T | Fixed wireless | 37% | 100/20 |
| Verizon | Fixed wireless | 32% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Stewartsville’s trash rules yet
Pickup rules, the dump and recycling in Stewartsville.
Where your child goes to school
Public school districts and the school path by grade.
Stewartsville is in Greenwich Township School District.
Test scores and every school: see Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
No town hall: the county runs things
Stewartsville is unincorporated, so Warren County is the local government.
Election office: FVAP local election office directory, updated Aug 2019; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Stewartsville is in ZIP code 08886
ZIP codes where Stewartsville residents live, with the share of the town in each.
| ZIP | Post office name | Share of Stewartsville | ZIP’s residents in Stewartsville |
|---|---|---|---|
| 08886 | Stewartsville, NJ | 100% | 10% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Stewartsville
Who supplies Stewartsville’s drinking water, and has it had violations?
Aqua Nj - Phillipsburg (EPA ID NJ2119001). It reported 1 health-based violation to EPA in the five years to October 2026: a bacteria testing requirement (Revised Total Coliform Rule). 83% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Stewartsville?
JCP&L (Jersey Central Power & Light Co.), an investor-owned utility. Its homes paid about 18.4¢ per kWh in 2025 (EIA).
What internet providers serve Stewartsville?
Xfinity, Service Electric, T-Mobile, AT&T, Verizon (FCC, as of December 2025).
What ZIP codes are in Stewartsville?
08886. Census 2020 ZIP Code Tabulation Areas.
What school district is Stewartsville in?
Greenwich Township School District.
How do I register to vote in Stewartsville?
In New Jersey you can register online until 21 days before Election Day, in person until 21 days before Election Day, or by mail (postmarked 21 days before). Elections here are run by the Warren County Clerk. Check your registration at voter.svrs.nj.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Nov 18, 2024 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet: FCC National Broadband Map, as of December 2025.