Living in Na-Au-Say Township, IL: what to set up and who to call
The Joliet water system reported one health-based violation to EPA in the last five years: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. For emergencies, Na-Au-Say Township is closest to Copley Memorial Hospital, 9.6 miles away.
I’m new in town
What to set up in Na-Au-Say 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 Na-Au-Say Township.
Power comes from Commonwealth Edison
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility, serves all of Na-Au-Say Township. 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 Joliet water system
The Joliet water system supplies Na-Au-Say Township: about 84% of residents live in its service area. About 13% 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 160,000 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. 86% of the 332 systems serving 100,001–250,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Jun 2026, was 6.5 ppb, below the 15 ppb action level that applied. The highest in five years was 9.0 ppb. That’s higher than 94% 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. Violations are counted by the start of their compliance period. IL1970450.
7 home internet providers serve Na-Au-Say Township
100% of 3,506 addresses can get 100/20 Mbps; 12% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 91% | 2,000/250 |
| AT&T | DSL, Fixed wireless, Fiber | 79% | 1,000/1,000 |
| Metronet | Fiber | 3% | 5,120/5,120 |
| Watch Communications | Fixed wireless | 99% | 400/40 |
| T-Mobile | Fixed wireless | 90% | 100/20 |
| Verizon | Fixed wireless | 46% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Na-Au-Say Township’s trash rules yet
Pickup rules, the dump and recycling in Na-Au-Say Township.
Where your child goes to school
Public school districts and the school path by grade.
Most of Na-Au-Say Township (66%) is in Oswego Community Unit School District 308; parts are in Plainfield School District 202 (22%) and Yorkville Community Unit School District 115 (12%).
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.
Na-Au-Say Township spans 7 ZIP codes
ZIP codes where Na-Au-Say Township residents live, with the share of the town in each.
| ZIP | Post office name | Share of Na-Au-Say Township | ZIP’s residents in Na-Au-Say Township |
|---|---|---|---|
| 60586 | Plainfield, IL | 57% | 13% |
| 60431 | Joliet, IL | 28% | 11% |
| 60543 | Oswego, IL | 7% | 2% |
| 60585 | Plainfield, IL | 2% | 1% |
| 60447 | Minooka, IL | 2% | 1% |
| 60560 | Yorkville, IL | 2% | 1% |
| 60544 | Plainfield, IL | 2% | 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 Na-Au-Say Township
Who supplies Na-Au-Say Township’s drinking water, and has it had violations?
The Joliet water system (EPA ID IL1970450). 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). 86% of systems its size had none. Its latest lead 90th percentile was 6.5 ppb (Jan–Jun 2026), against a 15 ppb action level.
Who provides electricity in Na-Au-Say Township?
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility. Its homes paid about 17.7¢ per kWh in 2025 (EIA).
What internet providers serve Na-Au-Say Township?
Xfinity, AT&T, Metronet, Watch Communications, T-Mobile, Verizon (FCC, as of December 2025).
What ZIP codes are in Na-Au-Say Township?
60586 (57%), 60431 (28%), 60543 (7%), 60585 (2%), 60447 (2%), 60560 (2%), 60544 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Na-Au-Say Township in?
Oswego Community Unit School District 308. Parts of the city are in Plainfield School District 202 and Yorkville Community Unit School District 115.
How do I register to vote in Na-Au-Say 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 Kendall 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.