Photo: Daniel Case · CC BY-SA 4.0Living in Cornwall, NY: what to set up and who to call
Tap water in most of Cornwall comes from the Cornwall-On-Hudson water system, which has a clean five-year EPA record (about 20% of systems its size had a health-based violation) and a latest lead result of 1.0 ppb. Trains stop in Cornwall, at Salisbury Mills-Cornwall.
I’m new in town
What to set up in Cornwall, 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 Cornwall.
Power comes from Central Hudson Gas & Elec
Central Hudson Gas & Elec (Central Hudson Gas & Elec Corp), an investor-owned utility, serves all of Cornwall. Its homes paid an average of 27.7¢ per kWh in 2025, about $193 a month (its average across New York, for customers on its standard service). New York lets you buy power from another supplier; 9% of Central Hudson Gas & Elec’s home customers do, and Central Hudson Gas & Elec still delivers it.
Start or move service: centralhudson.com · (845) 452-2700
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Cornwall-On-Hudson water system
The Cornwall-On-Hudson water system supplies Cornwall: about 51% of residents live in its service area. About 45% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water (EPA lists the New York City water system as seller) and serves 9,700 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 80% of the 5,012 systems serving 3,301–10,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 1.0 ppb, below the 15 ppb action level that applied. The highest in five years was 2.4 ppb. That’s lower than 57% of similar systems’ latest results.
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. NY3503526.
4 home internet providers serve Cornwall
99% of 4,367 addresses can get 100/20 Mbps; 84% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 98% | 1,000/35 |
| Verizon | Fiber, Fixed wireless | 90% | 2,300/2,300 |
| Frontier | DSL | 3% | 70/3 |
| T-Mobile | Fixed wireless | 49% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Curbside recycling in Cornwall: every week
Pickup days, the drop-off and recycling in Cornwall, from the town’s own site.
Single-stream recycling
All your recyclables go in one bin, no sorting.
We couldn’t find pickup days or drop-off hours. Check cornwallny.com →
From cornwallny.com, the town’s official site, checked Oct 21, 2026. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Most of Cornwall (99%) is in Cornwall Central School District.
ASchool gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Jun 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
Cornwall spans 5 ZIP codes
ZIP codes where Cornwall residents live, with the share of the town in each.
| ZIP | Post office name | Share of Cornwall | ZIP’s residents in Cornwall |
|---|---|---|---|
| 12518 | Cornwall, NY | 44% | 100% |
| 12520 | Cornwall On Hudson, NY | 26% | 100% |
| 12553 | New Windsor, NY | 20% | 10% |
| 10930 | Highland Mills, NY | 6% | 8% |
| 12577 | Salisbury Mills, NY | 5% | 26% |
A few homes fall in 10953.
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.
Train: OpenStreetMap (© OpenStreetMap contributors). ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Cornwall
Who supplies Cornwall’s drinking water, and has it had violations?
The Cornwall-On-Hudson water system (EPA ID NY3503526). It reported no health-based violations to EPA in the five years to October 2026; 80% of systems its size had none. Its latest lead 90th percentile was 1.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Cornwall?
Central Hudson Gas & Elec (Central Hudson Gas & Elec Corp), an investor-owned utility. Its homes paid about 27.7¢ per kWh in 2025 (EIA).
What internet providers serve Cornwall?
Spectrum, Verizon, Frontier, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Cornwall?
12518 (44%), 12520 (26%), 12553 (20%), 10930 (6%), 12577 (5%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Cornwall in?
Cornwall Central School District.
How do I register to vote in Cornwall?
In New York you can register online until 10 days before Election Day, in person until 10 days before Election Day, or by mail (postmarked 15 days before and received 10 days before). Elections here are run by the Orange County Board of Elections. Check your registration at voterlookup.elections.ny.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: Cornwall’s own website (cornwallny.com), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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 Aug 3, 2026 (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.