County · South Dakota
Roberts County, South Dakota: drinking water records
This overview covers 8 ZIP codes and 9 community water systems in Roberts 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 |
|---|---|---|---|---|---|
| Grant-Roberts Rural Water System SD4600864 | 5,050 | 60 | 0 | 0 | 3 ppb |
| Rosholt SD4600283 | 379 | 0 | 0 | 2 | 2 ppb |
| Summit SD4600326 | 288 | 0 | 0 | 3 | 2 ppb |
| Sisseton SD4600310 | 2,479 | 0 | 0 | 0 | 5 ppb |
| Wilmot SD4600371 | 432 | 0 | 0 | 0 | 7 ppb |
| New Effington SD4600013 | 247 | 0 | 0 | 0 | 2 ppb |
| Peever SD4600237 | 140 | 0 | 0 | 0 | 1 ppb |
| White Rock Colony SD4602027 | 108 | 0 | 0 | 0 | 1 ppb |
| Corona SD4600009 | 69 | 0 | 0 | 0 | 1 ppb |
ZIP reports in Roberts 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.