Living in Forest Lake, IL: what to set up and who to call
Forest Lake has no town government of its own, so Lake County runs its elections and most services, and its children attend Adlai E. Stevenson High School District 125. The Lake Zurich water system has a clean five-year EPA record, but its latest lead result, 6.9 ppb, was higher than 94% of similar systems’ (the action level is 15).
I’m new in town
What to set up in Forest Lake, 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 Forest Lake.
Power comes from Commonwealth Edison
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility, serves all of Forest Lake. 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 Lake Zurich water system
The Lake Zurich water system supplies Forest Lake: about 70% of residents live in its service area. Aqua Illinois-Hawthorn Woods serves another 6%. Lake County Pw- Hawthorn Woods serves another 6%. About 24% 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 19,759 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 Jul–Dec 2025, was 6.9 ppb, below the 15 ppb action level that applied. The highest in five years was 10.5 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 (EPA’s estimate). Violations are counted by the start of their compliance period. IL0970850.
6 home internet providers serve Forest Lake
100% of 710 addresses can get 100/20 Mbps; 60% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 1,200/35 |
| AT&T | DSL, Fixed wireless | 95% | 75/20 |
| i3 Broadband | Fiber | 59% | 8,000/8,000 |
| Verizon | Fixed wireless | 99% | 300/20 |
| T-Mobile | Fixed wireless | 38% | 25/3 |
| E-vergent | Fixed wireless | 3% | 10/1 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Forest Lake’s trash rules yet
Pickup rules, the dump and recycling in Forest Lake.
Where your child goes to school
Public school districts and the school path by grade.
Forest Lake is in two districts that split the grades: Adlai E. Stevenson High School District 125 and Lake Zurich Community Unit School District 95.
ASchool gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
No town hall: the county runs things
Forest Lake is unincorporated, so Lake County is the local government.
Election office: FVAP local election office directory, updated Jul 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Forest Lake is in ZIP code 60047
ZIP codes where Forest Lake residents live, with the share of the town in each.
| ZIP | Post office name | Share of Forest Lake | ZIP’s residents in Forest Lake |
|---|---|---|---|
| 60047 | Lake Zurich, IL | 100% | 4% |
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 Forest Lake
Who supplies Forest Lake’s drinking water, and has it had violations?
The Lake Zurich water system (EPA ID IL0970850). 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 6.9 ppb (Jul–Dec 2025), against a 15 ppb action level.
Who provides electricity in Forest Lake?
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility. Its homes paid about 17.7¢ per kWh in 2025 (EIA).
What internet providers serve Forest Lake?
Xfinity, AT&T, i3 Broadband, Verizon, T-Mobile, E-vergent (FCC, as of December 2025).
What ZIP codes are in Forest Lake?
60047. Census 2020 ZIP Code Tabulation Areas.
What school district is Forest Lake in?
Adlai E. Stevenson High School District 125 and Lake Zurich Community Unit School District 95. Parts of the city are in Kildeer Countryside Community Consolidated School District 96.
How do I register to vote in Forest Lake?
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 Lake 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.