County · South Dakota
Brookings County, South Dakota: drinking water records
This overview covers 8 ZIP codes and 14 community water systems in Brookings 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 |
|---|---|---|---|---|---|
| Brookings Municipal Utilities SD4600071 | 23,377 | 120 | 0 | 1 | 8 ppb |
| Kingbrook I Rural Water System SD4600431 | 6,455 | 60 | 0 | 0 | 2 ppb |
| Brookings-Deuel Rural Water System SD4600430 | 6,200 | 120 | 0 | 0 | 13 ppb |
| Big Sioux Community Water System SD4600429 | 5,800 | 180 | 0 | 0 | 1 ppb |
| Aurora SD4600058 | 1,200 | 0 | 0 | 2 | 2 ppb |
| Elkton SD4600117 | 755 | 0 | 0 | 1 | 4 ppb |
| White SD4600364 | 499 | 0 | 0 | 1 | 2 ppb |
| Beulah Land Water WY5601692 | 50 | 0 | 0 | 3 | 0 ppb |
| Volga SD4600346 | 2,340 | 0 | 0 | 0 | 2 ppb |
| University Estates SD4600075 | 150 | 0 | 0 | 0 | 0 ppb |
| Newdale Colony SD4602081 | 119 | 0 | 0 | 0 | 5 ppb |
| Red Willow Colony SD4602352 | 93 | 0 | 0 | 0 | 0 ppb |
| North Brookings Water and Sanitary D SD4602377 | 48 | 0 | 0 | 0 | 3 ppb |
| Southbrook Estates SD4600072 | 28 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Brookings 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.