Photo: Arthur Rothstein · Public domainLiving in Eldorado, IL: what to set up and who to call
An EPA health-based violation from 2024 is still open for the Eldorado water system. Eldorado Memorial Public Library District, at 1001 Grant Street, is the library in town.
I’m new in town
What to set up in Eldorado, 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 Eldorado.
Power comes from Ameren Illinois Company
Ameren Illinois Company (Ameren Illinois Company), an investor-owned utility, serves all of Eldorado. 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 Eldorado water system
The Eldorado water system supplies almost all of Eldorado. It buys treated ground water (EPA lists Saline Valley Conservancy District as seller) and serves 4,715 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. 80% of the 5,012 systems serving 3,301–10,000 people had none. 1 older violation is still open, since 2024: a lead and copper treatment requirement (Lead and Copper Rule Revisions), per EPA’s records.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2025, was 1.4 ppb, below the 15 ppb action level that applied. That’s higher than 58% 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 (EPA’s estimate). Violations are counted by the start of their compliance period. IL1655030.
9 home internet providers serve Eldorado
100% of 1,904 addresses can get 100/20 Mbps; 96% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Mediacom Xtream | Cable, Fiber | 99% | 1,000/50 |
| ClearWave | Fiber | 87% | 7,000/7,000 |
| Frontier | Fiber, DSL | 83% | 7,000/7,000 |
| Futiva | Fiber | 13% | 1,000/1,000 |
| Shawnee Communications | Fiber | 7% | 1,000/500 |
| Verizon | Fixed wireless | 92% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Eldorado’s trash rules yet
Pickup rules, the dump and recycling in Eldorado.
Where your child goes to school
Public school districts and the school path by grade.
Eldorado is in Eldorado Community Unit School District 4.
B−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 Sep 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Eldorado is in ZIP code 62930
ZIP codes where Eldorado residents live, with the share of the town in each.
| ZIP | Post office name | Share of Eldorado | ZIP’s residents in Eldorado |
|---|---|---|---|
| 62930 | Eldorado, IL | 100% | 65% |
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 Eldorado
Who supplies Eldorado’s drinking water, and has it had violations?
The Eldorado water system (EPA ID IL1655030). It reported 1 health-based violation to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions). 80% of systems its size had none. Its latest lead 90th percentile was 1.4 ppb (Jan–Dec 2025), against a 15 ppb action level.
Who provides electricity in Eldorado?
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 Eldorado?
Mediacom Xtream, ClearWave, Frontier, Futiva, Shawnee Communications, Verizon (FCC, as of December 2025).
What ZIP codes are in Eldorado?
62930. Census 2020 ZIP Code Tabulation Areas.
What school district is Eldorado in?
Eldorado Community Unit School District 4.
How do I register to vote in Eldorado?
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 Saline 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.