Photo: John Phelan · CC BY-SA 3.0Living in South Windham, CT: what to set up and who to call
South Windham has no town government of its own, so Windham County runs its elections and most services, and its children attend Windham School District. The closest public drop-off to South Windham is Willimantic Waste Volume Reduction Facility, 4 miles out; the town decides whether residents may use it.
I’m new in town
What to set up in South Windham, 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 South Windham.
Power comes from Eversource
Eversource (Connecticut Light & Power Co.), an investor-owned utility, serves all of South Windham. 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 Windham Water Works
Windham Water Works supplies South Windham: about 90% of residents live in its service area. About 10% 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 21,214 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 2023–Dec 2025, was 4.3 ppb, below the 15 ppb action level that applied. That’s higher than 88% 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. CT1630011.
5 home internet providers serve South Windham
98% of 600 addresses can get 100/20 Mbps; 74% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable | 97% | 1,000/1,000 |
| Frontier | Fiber, DSL | 78% | 7,000/7,000 |
| T-Mobile | Fixed wireless | 57% | 100/20 |
| Verizon | Fixed wireless | 24% | 300/20 |
| 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 4 miles away
Pickup rules, the dump and recycling in South Windham.
Willimantic Waste Volume Reduction Facility
1590 Main Street, Willimantic, CT, 06226 · run by Willimantic Waste
This isn’t South Windham’s own facility. Whether South Windham 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.
South Windham is in Windham 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
South Windham is unincorporated, so Windham 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.
South Windham spans 2 ZIP codes
ZIP codes where South Windham residents live, with the share of the town in each.
| ZIP | Post office name | Share of South Windham | ZIP’s residents in South Windham |
|---|---|---|---|
| 06226 | Willimantic, CT | 70% | 5% |
| 06266 | South Windham, CT | 30% | 100% |
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 South Windham
Who supplies South Windham’s drinking water, and has it had violations?
Windham Water Works (EPA ID CT1630011). 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 4.3 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in South Windham?
Eversource (Connecticut Light & Power Co.), an investor-owned utility. Its homes paid about 28.9¢ per kWh in 2025 (EIA).
What internet providers serve South Windham?
Spectrum, Frontier, T-Mobile, Verizon, AT&T (FCC, as of December 2025).
What ZIP codes are in South Windham?
06226 (70%), 06266 (30%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is South Windham in?
Windham School District.
How do I register to vote in South Windham?
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 Windham 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.