Photo: Dual Freq · CC BY 2.5Living in Dewey, IL: what to set up and who to call
Dewey has no town government of its own, so Champaign County runs its elections and most services, and its children attend Fisher Community Unit School District 1. Tap water in Dewey comes from Ej Water-Dewey, which has a clean five-year EPA record (about 23% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Dewey, 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 Dewey.
Power comes from Ameren Illinois Company
Ameren Illinois Company (Ameren Illinois Company), an investor-owned utility, serves all of Dewey. Its homes paid an average of 16.7¢ per kWh in 2025, about $148 a month (its average across Illinois, for customers on its standard service). Illinois lets you buy power from another supplier; 45% of Ameren Illinois Company’s home customers do, and Ameren Illinois Company still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Ej Water-Dewey
Ej Water-Dewey supplies Dewey: about 92% of residents live in its service area. About 8% 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 350 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 77% of the 15,074 systems serving 101–500 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Jun 2026, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 1.6 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 (EPA’s estimate). Violations are counted by the start of their compliance period. IL0195200.
7 home internet providers serve Dewey
100% of 60 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Mediacom Xtream | Fiber | 100% | 2,000/1,000 |
| Frontier | DSL | 82% | 10/1 |
| Rise Broadband | Fixed wireless | 100% | 100/20 |
| Watch Communications | Fixed wireless | 100% | 10/1 |
| Nextlink | Fixed wireless | 82% | 500/100 |
| T-Mobile | Fixed wireless | 37% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Dewey’s trash rules yet
Pickup rules, the dump and recycling in Dewey.
Where your child goes to school
Public school districts and the school path by grade.
Dewey is in Fisher Community Unit School District 1.
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
Dewey is unincorporated, so Champaign County is the local government.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Dewey is in ZIP code 61840
ZIP codes where Dewey residents live, with the share of the town in each.
| ZIP | Post office name | Share of Dewey | ZIP’s residents in Dewey |
|---|---|---|---|
| 61840 | Dewey, IL | 100% | 13% |
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 Dewey
Who supplies Dewey’s drinking water, and has it had violations?
Ej Water-Dewey (EPA ID IL0195200). It reported no health-based violations to EPA in the five years to October 2026; 77% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan–Jun 2026), against a 15 ppb action level.
Who provides electricity in Dewey?
Ameren Illinois Company (Ameren Illinois Company), an investor-owned utility. Its homes paid about 16.7¢ per kWh in 2025 (EIA).
What internet providers serve Dewey?
Mediacom Xtream, Frontier, Rise Broadband, Watch Communications, Nextlink, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Dewey?
61840. Census 2020 ZIP Code Tabulation Areas.
What school district is Dewey in?
Fisher Community Unit School District 1.
How do I register to vote in Dewey?
In Illinois you can register online until 16 days before Election Day, in person up to and including Election Day, or by mail (postmarked 28 days before). Elections here are run by the Champaign County Clerk. Check your registration at ova.elections.il.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 12, 2025 (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.