Photo: Ken Gallager at English Wikipedia · CC BY-SA 3.0Living in Terryville, CT: what to set up and who to call
Terryville has no town government of its own, so Litchfield County runs its elections and most services, and its children attend Plymouth School District. Tap water in Terryville comes from Ctwc - Naugatuck Reg-Terryville 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 0.6 ppb.
I’m new in town
What to set up in Terryville, 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 Terryville.
Power comes from Eversource
Eversource (Connecticut Light & Power Co.), an investor-owned utility, serves all of Terryville. 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 Ctwc - Naugatuck Reg-Terryville System
Ctwc - Naugatuck Reg-Terryville System supplies almost all of Terryville. It draws ground water (EPA lists Bristol Water Department and Ctwc - Naugatuck Reg-Thomaston System as sellers) and serves 5,607 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 2022–Dec 2024, was 0.6 ppb, below the 15 ppb action level that applied. That’s lower than 62% 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. CT1110011.
6 home internet providers serve Terryville
100% of 1,820 addresses can get 100/20 Mbps; 89% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| Frontier | Fiber, DSL | 86% | 7,000/7,000 |
| GoNetspeed | Fiber | 79% | 2,000/2,000 |
| Verizon | Fixed wireless | 49% | 300/20 |
| T-Mobile | Fixed wireless | 48% | 25/3 |
| AT&T | Fixed wireless | 20% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
The nearest public drop-off is 1 miles away
Pickup rules, the dump and recycling in Terryville.
Town of Plymouth Brush and Leaf Facility
56 Tunnel Road, Plymouth, CT, 06786
This isn’t Terryville’s own facility. Whether Terryville residents may use it is the town’s rule: check the town’s office.
OpenStreetMap, as of Oct 9, 2026. © OpenStreetMap contributors.
Where your child goes to school
Public school districts and the school path by grade.
Terryville is in Plymouth 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
Terryville is unincorporated, so Litchfield County is the local government.
Election office: FVAP local election office directory, updated Aug 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.
Terryville is in ZIP code 06786
ZIP codes where Terryville residents live, with the share of the town in each.
| ZIP | Post office name | Share of Terryville | ZIP’s residents in Terryville |
|---|---|---|---|
| 06786 | Terryville, CT | 100% | 55% |
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 Terryville
Who supplies Terryville’s drinking water, and has it had violations?
Ctwc - Naugatuck Reg-Terryville System (EPA ID CT1110011). 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 0.6 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Terryville?
Eversource (Connecticut Light & Power Co.), an investor-owned utility. Its homes paid about 28.9¢ per kWh in 2025 (EIA).
What internet providers serve Terryville?
Xfinity, Frontier, GoNetspeed, Verizon, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Terryville?
06786. Census 2020 ZIP Code Tabulation Areas.
What school district is Terryville in?
Plymouth School District.
How do I register to vote in Terryville?
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 Plymouth 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.