Living in Dunham Township, IL: what to set up and who to call
The Harvard water system has a clean five-year EPA record, but its latest lead result, 7.1 ppb, was higher than 96% of similar systems’ (the action level is 15). Children in Dunham Township attend Harvard Community Unit School District 50.
I’m new in town
What to set up in Dunham 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 Dunham Township.
Power comes from Commonwealth Edison
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility, serves all of Dunham 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 Harvard water system
The Harvard water system supplies Dunham Township: about 60% of residents live in its service area. About 40% 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 9,469 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 80% of the 5,012 systems serving 3,301–10,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2026–Dec 2028, was 7.1 ppb, below the 15 ppb action level that applied. That’s higher than 96% 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. IL1110250.
9 home internet providers serve Dunham Township
83% of 1,009 addresses can get 100/20 Mbps; 43% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable | 49% | 1,000/35 |
| Surf Internet | Fiber | 35% | 8,000/8,000 |
| AT&T | DSL, Fixed wireless | 11% | 25/3 |
| Mediacom Xtream | Cable | 3% | 1,000/50 |
| Rise Broadband | Fixed wireless | 79% | 100/20 |
| Verizon | Fixed wireless | 74% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Dunham Township’s trash rules yet
Pickup rules, the dump and recycling in Dunham Township.
Where your child goes to school
Public school districts and the school path by grade.
Dunham Township is in Harvard Community Unit School District 50.
DSchool 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.
Dunham Township spans 3 ZIP codes
ZIP codes where Dunham Township residents live, with the share of the town in each.
| ZIP | Post office name | Share of Dunham Township | ZIP’s residents in Dunham Township |
|---|---|---|---|
| 60033 | Harvard, IL | 92% | 19% |
| 60152 | Marengo, IL | 6% | 1% |
| 61038 | Garden Prairie, IL | 1% | 3% |
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 Dunham Township
Who supplies Dunham Township’s drinking water, and has it had violations?
The Harvard water system (EPA ID IL1110250). It reported no health-based violations to EPA in the five years to October 2026; 80% of systems its size had none. Its latest lead 90th percentile was 7.1 ppb (Jan 2026–Dec 2028), against a 15 ppb action level.
Who provides electricity in Dunham 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 Dunham Township?
Spectrum, Surf Internet, AT&T, Mediacom Xtream, Rise Broadband, Verizon (FCC, as of December 2025).
What ZIP codes are in Dunham Township?
60033 (92%), 60152 (6%), 61038 (1%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Dunham Township in?
Harvard Community Unit School District 50.
How do I register to vote in Dunham 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 McHenry 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.