Living in Northfield, IL: what to set up and who to call
The latest lead test reported by the Northfield water system, which supplies Northfield, came in at 21.0 ppb (Jan–Jun 2026), above the 15 ppb action level. Trash goes out on Thursdays in Northfield, collected by WM.
I’m new in town
What to set up in Northfield, 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 Northfield.
Power comes from Commonwealth Edison
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility, serves all of Northfield. 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 Northfield water system
The Northfield water system supplies Northfield: about 81% of residents live in its service area. Glenview serves another 6%. About 11% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It buys treated surface water (EPA lists Glenview and Winnetka as sellers) and serves 5,470 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), beginning Mar 2026. 80% of the 5,012 systems serving 3,301–10,000 people had none. 1 older violation is still open, since 2026: a lead and copper treatment requirement (Lead and Copper Rule), per EPA’s records.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Jun 2026, was 21.0 ppb, above the 15 ppb action level that applied. That’s higher than 100% 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. IL0312100.
4 home internet providers serve Northfield
100% of 2,039 addresses can get 100/20 Mbps; 10% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| AT&T | DSL, Fixed wireless, Fiber | 92% | 5,000/5,000 |
| Verizon | Fixed wireless | 95% | 300/20 |
| T-Mobile | Fixed wireless | 87% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Northfield is Thursday
Pickup days, the drop-off and recycling in Northfield, from the town’s own site.
This month
- TrashEvery week
When a holiday falls on a weekday, pickup slides one day later for the rest of that week.
Accepted at the curb
- Glass Bottles & Containers
- Food & Beverage Cans
- Flattened Cardboard & Paperboard
- Plastic Bottles, Cups & Containers
From northfieldil.org, the town’s official site, checked Oct 21, 2026; pages dated 2026-10-01, 2026-27. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Northfield is in two districts that split the grades: New Trier Township High School District 203 and Sunset Ridge School District 29.
A+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 Apr 2026; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Northfield is in ZIP code 60093
ZIP codes where Northfield residents live, with the share of the town in each.
| ZIP | Post office name | Share of Northfield | ZIP’s residents in Northfield |
|---|---|---|---|
| 60093 | Winnetka, IL | 100% | 28% |
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 Northfield
Who supplies Northfield’s drinking water, and has it had violations?
The Northfield water system (EPA ID IL0312100). 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). 80% of systems its size had none. Its latest lead 90th percentile was 21.0 ppb (Jan–Jun 2026), against a 15 ppb action level.
Who provides electricity in Northfield?
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility. Its homes paid about 17.7¢ per kWh in 2025 (EIA).
What internet providers serve Northfield?
Xfinity, AT&T, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Northfield?
60093. Census 2020 ZIP Code Tabulation Areas.
What school district is Northfield in?
New Trier Township High School District 203 and Sunset Ridge School District 29. Parts of the city are in Avoca School District 37 and Glenview Community Consolidated School District 34 and Northfield Township High School District 225.
How do I register to vote in Northfield?
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 Cook 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: Northfield’s own website (northfieldil.org), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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.