Photo: Ken Lund from Reno, Nevada, USA · CC BY-SA 2.0Living in Tonica, IL: what to set up and who to call
Tap water in Tonica comes from the Tonica 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. Two school districts split the grades in Tonica: LaSalle-Peru Township High School District 120 and Tonica Community Consolidated School District 79.
I’m new in town
What to set up in Tonica, 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 Tonica.
Power comes from Commonwealth Edison
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility, serves all of Tonica. Its homes paid an average of 17.7¢ per kWh in 2025, about $107 a month (its average across Illinois, for customers on its standard service). Illinois lets you buy power from another supplier; 20% of Commonwealth Edison’s home customers do, and Commonwealth Edison still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Tonica water system
The Tonica water system supplies Tonica: about 94% of residents live in its service area. About 6% 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 705 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 5,327 systems serving 501–1,000 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 5.0 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 (EPA’s estimate). Violations are counted by the start of their compliance period. IL0991150.
7 home internet providers serve Tonica
100% of 371 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Tonica Telephone Company | Fiber | 100% | 1,000/1,000 |
| Conxxus | Fiber | 88% | 8,000/8,000 |
| AT&T | Fixed wireless | 92% | 100/20 |
| Verizon | Fixed wireless | 90% | 300/20 |
| T-Mobile | Fixed wireless | 85% | 100/20 |
| Rise Broadband | Fixed wireless | 57% | 25/5 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Tonica’s trash rules yet
Pickup rules, the dump and recycling in Tonica.
Where your child goes to school
Public school districts and the school path by grade.
Tonica is in two districts that split the grades: LaSalle-Peru Township High School District 120 and Tonica Community Consolidated School District 79.
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.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Jun 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Tonica is in ZIP code 61370
ZIP codes where Tonica residents live, with the share of the town in each.
| ZIP | Post office name | Share of Tonica | ZIP’s residents in Tonica |
|---|---|---|---|
| 61370 | Tonica, IL | 100% | 57% |
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 Tonica
Who supplies Tonica’s drinking water, and has it had violations?
The Tonica water system (EPA ID IL0991150). 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 Tonica?
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility. Its homes paid about 17.7¢ per kWh in 2025 (EIA).
What internet providers serve Tonica?
Tonica Telephone Company, Conxxus, AT&T, Verizon, T-Mobile, Rise Broadband (FCC, as of December 2025).
What ZIP codes are in Tonica?
61370. Census 2020 ZIP Code Tabulation Areas.
What school district is Tonica in?
LaSalle-Peru Township High School District 120 and Tonica Community Consolidated School District 79.
How do I register to vote in Tonica?
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 LaSalle 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.