Living in Crystal Lake, IA: what to set up and who to call
Crystal Lake Water Supply reported one health-based violation to EPA in the last five years: nitrite, beginning Oct 2022. For emergencies, Crystal Lake is closest to Hancock County Health System, 8.7 miles away.
I’m new in town
What to set up in Crystal 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 Crystal Lake.
Power comes from Interstate Power and Light
Interstate Power and Light (Interstate Power and Light Co), an investor-owned utility, serves all of Crystal Lake. Its homes paid an average of 17.8¢ per kWh in 2025, about $131 a month (its average across Iowa).
Start or move service: alliantenergy.com · (319) 786-4411
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Crystal Lake Water Supply
Crystal Lake Water Supply supplies almost all of Crystal Lake. It draws ground water and serves 255 people in all.
1 health-based violation reported to EPA in the five years to October 2026: nitrite, beginning Oct 2022. 77% of the 15,074 systems serving 101–500 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 0.0 ppb, below the 15 ppb action level that applied. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
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. IA4115092.
2 home internet providers serve Crystal Lake
100% of 173 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Winnebago Cooperative Telecom Association | Fiber | 100% | 1,000/1,000 |
| Northwest Communications | Fixed wireless | 2% | 25/5 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Crystal Lake’s trash rules yet
Pickup rules, the dump and recycling in Crystal Lake.
Where your child goes to school
Public school districts and the school path by grade.
Crystal Lake is in Forest City Community School District.
Test scores and every school: see 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 Sep 2022; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Crystal Lake is in ZIP code 50432
ZIP codes where Crystal Lake residents live, with the share of the town in each.
| ZIP | Post office name | Share of Crystal Lake | ZIP’s residents in Crystal Lake |
|---|---|---|---|
| 50432 | Crystal Lake, IA | 100% | 98% |
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 Crystal Lake
Who supplies Crystal Lake’s drinking water, and has it had violations?
Crystal Lake Water Supply (EPA ID IA4115092). It reported 1 health-based violation to EPA in the five years to October 2026: nitrite. 77% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Crystal Lake?
Interstate Power and Light (Interstate Power and Light Co), an investor-owned utility. Its homes paid about 17.8¢ per kWh in 2025 (EIA).
What internet providers serve Crystal Lake?
Winnebago Cooperative Telecom Association, Northwest Communications (FCC, as of December 2025).
What ZIP codes are in Crystal Lake?
50432. Census 2020 ZIP Code Tabulation Areas.
What school district is Crystal Lake in?
Forest City Community School District.
How do I register to vote in Crystal Lake?
In Iowa you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before). Elections here are run by the Hancock County Auditor. Check your registration at sos.iowa.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 Nov 18, 2024 (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.