Living in Old Mystic, CT: what to set up and who to call
Old Mystic has no town government of its own, so New London County runs its elections and most services, and its children attend Groton School District. Power in Old Mystic comes from City of Norwich, a municipal utility rather than a private company.
I’m new in town
What to set up in Old Mystic, 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 Old Mystic.
Power comes from City of Norwich
City of Norwich (City of Norwich - (CT)), a municipal utility, serves 88.0% of Old Mystic residents. Its homes paid an average of 23.4¢ per kWh in 2025, about $148 a month (its average across Connecticut).
Start or move service: norwichpublicutilities.com · (860) 887-2555
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Aquarion-Mystic
Aquarion-Mystic supplies Old Mystic: about 87% of residents live in its service area. About 13% 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 Groton Utilities as seller) and serves 10,788 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. The highest in five years was 3.0 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. CT1370011.
6 home internet providers serve Old Mystic
100% of 1,383 addresses can get 100/20 Mbps; 65% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| Breezeline | Cable | 99% | 1,000/50 |
| Frontier | Fiber, DSL | 89% | 7,000/7,000 |
| T-Mobile | Fixed wireless | 79% | 100/20 |
| Verizon | Fixed wireless | 38% | 300/20 |
| AT&T | Fixed wireless | 24% | 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 2 miles away
Pickup rules, the dump and recycling in Old Mystic.
Groton Transfer Station
· run by Town of Groton
This isn’t Old Mystic’s own facility. Whether Old Mystic 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.
Old Mystic is in Groton 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
Old Mystic is unincorporated, so New London County is the local government.
Election office: FVAP local election office directory, updated Sep 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.
Old Mystic is in ZIP code 06355
ZIP codes where Old Mystic residents live, with the share of the town in each.
| ZIP | Post office name | Share of Old Mystic | ZIP’s residents in Old Mystic |
|---|---|---|---|
| 06355 | Mystic, CT | 100% | 27% |
06372 is P.O. box or single-organization ZIP with no homes.
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 Old Mystic
Who supplies Old Mystic’s drinking water, and has it had violations?
Aquarion-Mystic (EPA ID CT1370011). 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 Old Mystic?
City of Norwich (City of Norwich - (CT)), a municipal utility. Its homes paid about 23.4¢ per kWh in 2025 (EIA).
What internet providers serve Old Mystic?
Xfinity, Breezeline, Frontier, T-Mobile, Verizon, AT&T (FCC, as of December 2025).
What ZIP codes are in Old Mystic?
06355. Census 2020 ZIP Code Tabulation Areas.
What school district is Old Mystic in?
Groton School District.
How do I register to vote in Old Mystic?
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 Groton 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.