Living in Onarga Township, IL: what to set up and who to call
Tap water in most of Onarga Township comes from the Onarga water system, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result below detection. The nearest library is Onarga Community Public Library District, 2.4 miles away.
I’m new in town
What to set up in Onarga Township, 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 Onarga Township.
Power comes from Ameren Illinois Company
Ameren Illinois Company (Ameren Illinois Company), an investor-owned utility, serves all of Onarga Township. 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 Onarga water system
The Onarga water system supplies Onarga Township: about 82% of residents live in its service area. About 18% 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 1,409 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 7,966 systems serving 1,001–3,300 people.
The latest lead result on file, the 90th percentile of homes sampled in Jul–Dec 2025, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 5.6 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. IL0750700.
10 home internet providers serve Onarga Township
98% of 733 addresses can get 100/20 Mbps; 83% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 77% | 1,200/35 |
| Pavlov Media | Fiber | 77% | 8,000/8,000 |
| Conxxus | Fiber | 68% | 8,000/8,000 |
| AT&T | DSL, Fixed wireless | 35% | 100/20 |
| Watch Communications | Fixed wireless | 97% | 100/20 |
| Rise Broadband | Fixed wireless | 92% | 25/5 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Onarga Township’s trash rules yet
Pickup rules, the dump and recycling in Onarga Township.
Where your child goes to school
Public school districts and the school path by grade.
Most of Onarga Township (93%) is in Iroquois West Community Unit School District 10; parts are in Crescent Iroquois Community Unit School District 249 (7%).
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 Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Onarga Township spans 3 ZIP codes
ZIP codes where Onarga Township residents live, with the share of the town in each.
| ZIP | Post office name | Share of Onarga Township | ZIP’s residents in Onarga Township |
|---|---|---|---|
| 60955 | Onarga, IL | 94% | 83% |
| 60938 | Gilman, IL | 4% | 3% |
| 60968 | Thawville, IL | 2% | 10% |
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 Onarga Township
Who supplies Onarga Township’s drinking water, and has it had violations?
The Onarga water system (EPA ID IL0750700). It reported no health-based violations to EPA in the five years to October 2026; 78% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jul–Dec 2025), against a 15 ppb action level.
Who provides electricity in Onarga Township?
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 Onarga Township?
Xfinity, Pavlov Media, Conxxus, AT&T, Watch Communications, Rise Broadband (FCC, as of December 2025).
What ZIP codes are in Onarga Township?
60955 (94%), 60938 (4%), 60968 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Onarga Township in?
Iroquois West Community Unit School District 10. Parts of the city are in Crescent Iroquois Community Unit School District 249.
How do I register to vote in Onarga Township?
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 Iroquois 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.