Living in Northwest Harwinton, CT: what to set up and who to call
Northwest Harwinton has no town government of its own, so Litchfield County runs its elections and most services, and its children attend Regional School District 10. For emergencies, Northwest Harwinton is closest to Charlotte Hungerford Hospital, 2.9 miles away.
I’m new in town
What to set up in Northwest Harwinton, 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 Northwest Harwinton.
Power comes from Eversource
Eversource (Connecticut Light & Power Co.), an investor-owned utility, serves all of Northwest Harwinton. Its homes paid an average of 28.9¢ per kWh in 2025, about $195 a month (its average across Connecticut, for customers on its standard service). Connecticut lets you buy power from another supplier; 17% of Eversource’s home customers do, and Eversource still delivers it.
Start or move service: cl-p.com · (800) 286-2000
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Torrington Water Company
Torrington Water Company supplies Northwest Harwinton: about 38% of residents live in its service area. Garden Lane Apartments serves another 8%. About 54% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water and serves 37,915 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2026, was 0.0 ppb, below the 15 ppb action level that applied. 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. CT1430011.
6 home internet providers serve Northwest Harwinton
98% of 1,430 addresses can get 100/20 Mbps; 86% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable | 98% | 1,000/35 |
| Frontier | Fiber, DSL | 86% | 7,000/7,000 |
| Optimum | Cable, Fiber | 2% | 8,000/8,000 |
| T-Mobile | Fixed wireless | 63% | 100/20 |
| Verizon | Fixed wireless | 57% | 300/20 |
| AT&T | Fixed wireless | 28% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Northwest Harwinton’s trash rules yet
Pickup rules, the dump and recycling in Northwest Harwinton.
Where your child goes to school
Public school districts and the school path by grade.
Northwest Harwinton is in Region School District 10.
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
Northwest Harwinton is unincorporated, so Litchfield County is the local government.
Election office: FVAP local election office directory, updated Jul 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.
Northwest Harwinton is in ZIP code 06791
ZIP codes where Northwest Harwinton residents live, with the share of the town in each.
| ZIP | Post office name | Share of Northwest Harwinton | ZIP’s residents in Northwest Harwinton |
|---|---|---|---|
| 06791 | Harwinton, CT | 100% | 57% |
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 Northwest Harwinton
Who supplies Northwest Harwinton’s drinking water, and has it had violations?
Torrington Water Company (EPA ID CT1430011). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan–Dec 2026), against a 15 ppb action level.
Who provides electricity in Northwest Harwinton?
Eversource (Connecticut Light & Power Co.), an investor-owned utility. Its homes paid about 28.9¢ per kWh in 2025 (EIA).
What internet providers serve Northwest Harwinton?
Spectrum, Frontier, Optimum, T-Mobile, Verizon, AT&T (FCC, as of December 2025).
What ZIP codes are in Northwest Harwinton?
06791. Census 2020 ZIP Code Tabulation Areas.
What school district is Northwest Harwinton in?
Region School District 10.
How do I register to vote in Northwest Harwinton?
In Connecticut you can register online until 18 days before Election Day, in person up to and including Election Day, or by mail (postmarked 18 days before). Elections here are run by the Harwinton Town Clerk. Check your registration at portaldir.ct.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 Sep 30, 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.