Photo: Bobertrobert0709 · CC BY-SA 4.0Living in Westmont, IL: what to set up and who to call
The Westmont water system has a clean five-year EPA record, but its latest lead result, 8.9 ppb, was higher than 97% of similar systems’ (the action level is 15). Two school districts split the grades in Westmont: Community High School District 99 and Westmont Community Unit School District 201.
I’m new in town
What to set up in Westmont, 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 Westmont.
Power comes from Commonwealth Edison
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility, serves all of Westmont. 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 Westmont water system
The Westmont water system supplies almost all of Westmont. It buys treated surface water (EPA lists Du Page Water Commission as seller) and serves 24,161 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2026, was 8.9 ppb, below the 15 ppb action level that applied. That’s higher than 97% 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. IL0430950.
4 home internet providers serve Westmont
100% of 6,040 addresses can get 100/20 Mbps; 16% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| AT&T | DSL, Fixed wireless, Fiber | 97% | 5,000/5,000 |
| Verizon | Fixed wireless | 86% | 300/20 |
| T-Mobile | Fixed wireless | 81% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Westmont depends on your street
Pickup days, the drop-off and recycling in Westmont, from the town’s own site.
Your pickup week
- TrashEvery week, on your street’s dayLook up your day on westmontillinois.maps.arcgis.com
- RecyclingEvery week
- Bulky itemsEvery week
From westmont.illinois.gov, the town’s official site, checked Oct 21, 2026. 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.
Westmont is in two districts that split the grades: Community High School District 99 and Westmont Community Unit School District 201.
ASchool 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.
Westmont spans 4 ZIP codes
ZIP codes where Westmont residents live, with the share of the town in each.
| ZIP | Post office name | Share of Westmont | ZIP’s residents in Westmont |
|---|---|---|---|
| 60559 | Westmont, IL | 94% | 94% |
| 60523 | Oak Brook, IL | 3% | 7% |
| 60516 | Downers Grove, IL | 1% | 1% |
| 60527 | Willowbrook, IL | 1% | 1% |
A few homes fall in 60515, 60514.
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.
Train: OpenStreetMap (© OpenStreetMap contributors). ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Westmont
Who supplies Westmont’s drinking water, and has it had violations?
The Westmont water system (EPA ID IL0430950). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 8.9 ppb (Jan–Dec 2026), against a 15 ppb action level.
Who provides electricity in Westmont?
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility. Its homes paid about 17.7¢ per kWh in 2025 (EIA).
What internet providers serve Westmont?
Xfinity, AT&T, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Westmont?
60559 (94%), 60523 (3%), 60516 (1%), 60527 (1%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Westmont in?
Community High School District 99 and Westmont Community Unit School District 201. Parts of the city are in Hinsdale Township High School District 86 and Maercker School District 60 and Downers Grove Grade School District 58.
How do I register to vote in Westmont?
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 DuPage County Clerk - Election Division. 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: Westmont’s own website (westmont.illinois.gov), 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.