Living in Twin Lakes, IA: what to set up and who to call
Twin Lakes has no town government of its own, so Calhoun County runs its elections and most services, and its children attend South Central Calhoun Community School District. Tap water in Twin Lakes comes from Twin Lakes Utilities, which has a clean five-year EPA record (about 23% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Twin Lakes, 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 Twin Lakes.
Power comes from MidAmerican Energy
MidAmerican Energy (MidAmerican Energy Co), an investor-owned utility, serves all of Twin Lakes. Its homes paid an average of 11.2¢ per kWh in 2025, about $93 a month (its average across Iowa).
Start or move service: midamericanenergy.com · (888) 427-5632
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Twin Lakes Utilities
Twin Lakes Utilities supplies Twin Lakes: about 96% of residents live in its service area. About 4% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It buys treated ground water (EPA lists Rockwell City Water Supply as seller) and serves 300 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 77% of the 15,074 systems serving 101–500 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2024, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 0.4 ppb. 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. IA1300101.
4 home internet providers serve Twin Lakes
97% of 441 addresses can get 100/20 Mbps; 3% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Mediacom Xtream | Cable, Fiber | 96% | 1,000/50 |
| Kinetic | DSL | 61% | 200/20 |
| Northwest Communications | Fixed wireless | 93% | 300/50 |
| T-Mobile | Fixed wireless | 6% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Twin Lakes’ trash rules yet
Pickup rules, the dump and recycling in Twin Lakes.
Where your child goes to school
Public school districts and the school path by grade.
Most of Twin Lakes (49%) is in South Central Calhoun Community School District; parts are in Manson Northwest Webster Community School District (28%) and Pocahontas Area Community School District (23%).
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.
No town hall: the county runs things
Twin Lakes is unincorporated, so Calhoun County is the local government.
Election office: FVAP local election office directory, updated Aug 2026; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Twin Lakes spans 2 ZIP codes
ZIP codes where Twin Lakes residents live, with the share of the town in each.
| ZIP | Post office name | Share of Twin Lakes | ZIP’s residents in Twin Lakes |
|---|---|---|---|
| 50563 | Manson, IA | 65% | 8% |
| 50579 | Rockwell City, IA | 35% | 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 Twin Lakes
Who supplies Twin Lakes’ drinking water, and has it had violations?
Twin Lakes Utilities (EPA ID IA1300101). It reported no health-based violations to EPA in the five years to October 2026; 77% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan–Dec 2024), against a 15 ppb action level.
Who provides electricity in Twin Lakes?
MidAmerican Energy (MidAmerican Energy Co), an investor-owned utility. Its homes paid about 11.2¢ per kWh in 2025 (EIA).
What internet providers serve Twin Lakes?
Mediacom Xtream, Kinetic, Northwest Communications, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Twin Lakes?
50563 (65%), 50579 (35%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Twin Lakes in?
South Central Calhoun Community School District. Parts of the city are in Manson Northwest Webster Community School District and Pocahontas Area Community School District.
How do I register to vote in Twin Lakes?
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 Calhoun 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.