Photo: TheCatalyst31 · CC BY 4.0Living in Flandreau, SD: what to set up and who to call
Flandreau runs its own electric utility, City of Flandreau. The Flandreau water system reported one health-based violation to EPA in the last five years: a disinfection byproducts requirement (Stage 1 Disinfectants and Disinfection Byproducts Rule), beginning Jul 2022.
I’m new in town
What to set up in Flandreau, 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 Flandreau.
Power comes from City of Flandreau
City of Flandreau (City of Flandreau), a municipal utility, serves all of Flandreau.
Start or move service: cityofflandreau.com · (605) 997-2492
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Flandreau water system
The Flandreau water system supplies Flandreau: about 96% of residents live in its service area. About 3% 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 Big Sioux Community Water System as seller) and serves 2,372 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a disinfection byproducts requirement (Stage 1 Disinfectants and Disinfection Byproducts Rule), beginning Jul 2022. 78% of the 7,966 systems serving 1,001–3,300 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2024, was 1.0 ppb, below the 15 ppb action level that applied. That’s lower than 52% 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. Violations are counted by the start of their compliance period. SD4600127.
8 home internet providers serve Flandreau
100% of 1,015 addresses can get 100/20 Mbps; 97% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Mediacom Xtream | Cable, Fiber | 99% | 1,000/50 |
| Valley FiberCom | Fiber | 94% | 1,000/1,000 |
| Bluepeak | Cable, Fiber | 83% | 5,000/5,000 |
| CenturyLink | DSL | 78% | 10/1 |
| Midco | Fixed wireless | 100% | 100/20 |
| Verizon | Fixed wireless | 83% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Flandreau’s trash rules yet
Pickup rules, the dump and recycling in Flandreau.
Where your child goes to school
Public school districts and the school path by grade.
Flandreau is in Flandreau School District 50-3.
C−School 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 Jul 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
Flandreau is in ZIP code 57028
ZIP codes where Flandreau residents live, with the share of the town in each.
| ZIP | Post office name | Share of Flandreau | ZIP’s residents in Flandreau |
|---|---|---|---|
| 57028 | Flandreau, SD | 100% | 71% |
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 Flandreau
Who supplies Flandreau’s drinking water, and has it had violations?
The Flandreau water system (EPA ID SD4600127). It reported 1 health-based violation to EPA in the five years to October 2026: a disinfection byproducts requirement (Stage 1 Disinfectants and Disinfection Byproducts Rule). 78% of systems its size had none. Its latest lead 90th percentile was 1.0 ppb (Jan–Dec 2024), against a 15 ppb action level.
Who provides electricity in Flandreau?
City of Flandreau (City of Flandreau), a municipal utility.
What internet providers serve Flandreau?
Mediacom Xtream, Valley FiberCom, Bluepeak, CenturyLink, Midco, Verizon (FCC, as of December 2025).
What ZIP codes are in Flandreau?
57028. Census 2020 ZIP Code Tabulation Areas.
What school district is Flandreau in?
Flandreau School District 50-3.
How do I register to vote in Flandreau?
South Dakota has no online registration; you can register in person until 15 days before Election Day or by mail (received 15 days before). Elections here are run by the Moody County Auditor. Check your registration at vip.sdsos.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 Aug 3, 2026 (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.