Living in Preston Heights, IL: what to set up and who to call
An EPA health-based violation from 2024 is still open for the Southeast Joliet Sd water system, which supplies Preston Heights. Preston Heights has no town government of its own, so Will County runs its elections and most services, and its children attend Joliet Township High School District 204.
I’m new in town
What to set up in Preston Heights, 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 Preston Heights.
Power comes from Commonwealth Edison
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility, serves all of Preston Heights. 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 Southeast Joliet Sd water system
The Southeast Joliet Sd water system supplies Preston Heights: about 76% of residents live in its service area. 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 (EPA lists Joliet as seller) and serves 2,000 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. 78% of the 7,966 systems serving 1,001–3,300 people had none. 1 older violation is still open, since 2024: a lead and copper treatment requirement (Lead and Copper Rule Revisions), per EPA’s records.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Jun 2026, was 2.9 ppb, below the 15 ppb action level that applied. That’s higher than 81% 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. IL1977490.
5 home internet providers serve Preston Heights
100% of 996 addresses can get 100/20 Mbps; 42% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 99% | 2,000/250 |
| AT&T | Fixed wireless, DSL, Fiber | 94% | 5,000/5,000 |
| Verizon | Fixed wireless | 96% | 300/20 |
| Bertram Communications | Fixed wireless | 72% | 100/20 |
| T-Mobile | Fixed wireless | 23% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Preston Heights’ trash rules yet
Pickup rules, the dump and recycling in Preston Heights.
Where your child goes to school
Public school districts and the school path by grade.
Preston Heights is in two districts that split the grades: Joliet Township High School District 204 and Laraway Community Consolidated School District 70C.
C−School 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
Preston Heights is unincorporated, so Will County is the local government.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Preston Heights spans 2 ZIP codes
ZIP codes where Preston Heights residents live, with the share of the town in each.
| ZIP | Post office name | Share of Preston Heights | ZIP’s residents in Preston Heights |
|---|---|---|---|
| 60433 | Joliet, IL | 67% | 12% |
| 60436 | Joliet, IL | 33% | 5% |
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 Preston Heights
Who supplies Preston Heights’ drinking water, and has it had violations?
The Southeast Joliet Sd water system (EPA ID IL1977490). 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). 78% of systems its size had none. Its latest lead 90th percentile was 2.9 ppb (Jan–Jun 2026), against a 15 ppb action level.
Who provides electricity in Preston Heights?
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility. Its homes paid about 17.7¢ per kWh in 2025 (EIA).
What internet providers serve Preston Heights?
Xfinity, AT&T, Verizon, Bertram Communications, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Preston Heights?
60433 (67%), 60436 (33%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Preston Heights in?
Joliet Township High School District 204 and Laraway Community Consolidated School District 70C. Parts of the city are in Joliet Public School District 86.
How do I register to vote in Preston Heights?
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 Will 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.