County · Iowa
Buena Vista County, Iowa: drinking water records
This overview covers 8 ZIP codes and 12 community water systems in Buena Vista County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Storm Lake Water Treatment Plant IA1178097 | 11,431 | 60 | 0 | 0 | 0 ppb |
| Iowa Lakes Regional Water IA2100701 | 6,755 | 60 | 0 | 0 | 0.3 ppb |
| Alta Municipal Water Plant IA1108025 | 2,087 | 0 | 0 | 0 | 0 ppb |
| Sioux Rapids Water Department IA1175056 | 932 | 0 | 0 | 0 | 6.5 ppb |
| Newell Water Treatment Plant IA1155049 | 906 | 0 | 0 | 0 | 1.1 ppb |
| Lakeside Water Supply IA1145047 | 700 | 0 | 0 | 0 | 0.7 ppb |
| Albert City Muni Water Supply IA1103009 | 677 | 0 | 0 | 0 | 2 ppb |
| Marathon Light & Water Department IA1150030 | 230 | 0 | 0 | 0 | 2 ppb |
| Rembrandt Water Supply IA1170078 | 209 | 0 | 0 | 0 | 0.1 ppb |
| Lake Creek Homeowners Association IA1178800 | 175 | 0 | 0 | 0 | 0.1 ppb |
| Linn Grove Water Works IA1147085 | 163 | 0 | 0 | 0 | 2.3 ppb |
| Truesdale Water Supply IA1182035 | 69 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Buena Vista County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.