Photo: I, the copyright holder of this work, hereby publish it under the following license: · CC BY-SA 3.0Living in Sullivan, WI: what to set up and who to call
Tremain Mobile Home Park reported 4 health-based violations to EPA in the last five years: arsenic ×3, a disinfection byproducts requirement (Stage 1 Disinfectants and Disinfection Byproducts Rule). 77% of systems its size reported none. In Sullivan, trash day is Thursday.
I’m new in town
What to set up in Sullivan, 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 Sullivan.
Power comes from We Energies
We Energies (Wisconsin Electric Power Co.), an investor-owned utility, serves all of Sullivan. Its homes paid an average of 20.5¢ per kWh in 2025, about $131 a month (its average across Wisconsin).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Tremain Mobile Home Park
Tremain Mobile Home Park supplies Sullivan: about 16% of residents live in its service area. About 84% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 475 people in all.
4 health-based violations reported to EPA in the five years to October 2026: arsenic ×3, a disinfection byproducts requirement (Stage 1 Disinfectants and Disinfection Byproducts Rule), the latest beginning Aug 2025. 77% of the 15,074 systems serving 101–500 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jun–Sep 2021, was 1.5 ppb, below the 15 ppb action level that applied. It’s from 2021: EPA has no newer result for this system.
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 (EPA’s estimate). Violations are counted by the start of their compliance period. WI1280127.
8 home internet providers serve Sullivan
74% of 1,280 addresses can get 100/20 Mbps; 28% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Bug Tussel | Fixed wireless, Fiber | 87% | 50/8 |
| Spectrum | Cable, Fiber | 63% | 1,000/1,000 |
| Brightspeed | DSL, Fiber | 35% | 80/10 |
| Bertram Communications | Fixed wireless | 77% | 100/20 |
| Verizon | Fixed wireless | 55% | 300/20 |
| T-Mobile | Fixed wireless | 23% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Sullivan is Thursday
Pickup days, the drop-off and recycling in Sullivan, from the town’s own site.
This month
- TrashEvery week
- RecyclingEvery other week, Thu · which week: villageofsullivan-gov.us
From villageofsullivan-gov.us, the town’s official site, checked Oct 22, 2026; pages dated 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 Sullivan (50%) is in Jefferson School District; parts are in Palmyra-Eagle Area School District (41%) and Oconomowoc Area School District (8%).
C+School 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 May 2026; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Sullivan spans 5 ZIP codes
ZIP codes where Sullivan residents live, with the share of the town in each.
| ZIP | Post office name | Share of Sullivan | ZIP’s residents in Sullivan |
|---|---|---|---|
| 53178 | Sullivan, WI | 45% | 38% |
| 53137 | Helenville, WI | 26% | 35% |
| 53118 | Dousman, WI | 18% | 6% |
| 53156 | Palmyra, WI | 7% | 6% |
| 53549 | Jefferson, WI | 4% | 1% |
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 Sullivan
Who supplies Sullivan’s drinking water, and has it had violations?
Tremain Mobile Home Park (EPA ID WI1280127). It reported 4 health-based violations to EPA in the five years to October 2026: arsenic ×3, a disinfection byproducts requirement (Stage 1 Disinfectants and Disinfection Byproducts Rule). 77% of systems its size had none. Its latest lead 90th percentile was 1.5 ppb (Jun–Sep 2021), against a 15 ppb action level.
Who provides electricity in Sullivan?
We Energies (Wisconsin Electric Power Co.), an investor-owned utility. Its homes paid about 20.5¢ per kWh in 2025 (EIA).
What internet providers serve Sullivan?
Bug Tussel, Spectrum, Brightspeed, Bertram Communications, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Sullivan?
53178 (45%), 53137 (26%), 53118 (18%), 53156 (7%), 53549 (4%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Sullivan in?
Jefferson School District. Parts of the city are in Palmyra-Eagle Area School District and Oconomowoc Area School District.
How do I register to vote in Sullivan?
In Wisconsin you can register online until 20 days before Election Day, in person up to and including Election Day, or by mail (postmarked 20 days before). Elections here are run by the Town of Sullivan Clerk. Check your registration at myvote.wi.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: Sullivan’s own website (villageofsullivan-gov.us), read Oct 22, 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 Nov 18, 2024 (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.