PFAS in South Dakota drinking water
55 community water systems tested
1.8%
of tested systems detected PFOA or PFOS
(1/55)
(1/55)
Water systems
PFAS value per system, 2023–2025. EPA limit — 4 ppt (0.004 µg/L) for PFOA and PFOS, set in 2024. Systems that detected PFOA or PFOS
are highlighted and listed first. “Not detected” means the contaminant was measured but
not found.
| System | City | Population | PFAS (ug/L) |
|---|---|---|---|
| RAPID VALLEY SANITARY DISTRICT | RAPID CITY | 11,408 | 0.0057 ug/L |
| SIOUX FALLS | SIOUX FALLS | 216,462 | Not detected |
| RAPID CITY | RAPID CITY | 72,009 | Not detected |
| ABERDEEN | ABERDEEN | 27,989 | Not detected |
| BROOKINGS MUNICIPAL UTILITIES | BROOKINGS | 23,377 | Not detected |
| WATERTOWN MUNICIPAL UTILITIES | WATERTOWN | 23,230 | Not detected |
| WEB WATER DEVELOPMENT ASSOCIATION | ABERDEEN | 20,750 | Not detected |
| MITCHELL | MITCHELL | 15,651 | Not detected |
| YANKTON | YANKTON | 15,411 | Not detected |
| HURON | HURON | 14,263 | Not detected |
| PIERRE | PIERRE | 14,091 | Not detected |
| BOX ELDER | BOX ELDER | 14,000 | Not detected |
| SPEARFISH | SPEARFISH | 13,803 | Not detected |
| MINNEHAHA COMMUNITY WATER CORP | DELL RAPIDS | 13,435 | Not detected |
| BY WATER DISTRICT | AVON | 13,320 | Not detected |
| MID-DAKOTA RURAL WATER | MILLER | 11,833 | Not detected |
| VERMILLION | VERMILLION | 11,695 | Not detected |
| BRANDON | BRANDON | 11,048 | Not detected |
| HARRISBURG | HARRISBURG | 10,297 | Not detected |
| ELLSWORTH AFB | ELLSWORTH AFB | 9,100 | Not detected |
| PINE RIDGE WATER SYSTEM | 7,482 | Not detected | |
| TEA | TEA | 7,381 | Not detected |
| STURGIS | STURGIS | 7,020 | Not detected |
| KYLE WATER SYSTEM | 6,526 | Not detected | |
| KINGBROOK I RURAL WATER SYSTEM | ARLINGTON | 6,455 | Not detected |
| RANDALL COMMUNITY WATER DISTRICT | LAKE ANDES | 6,248 | Not detected |
| BROOKINGS-DEUEL RURAL WATER SYSTEM | CLEAR LAKE | 6,200 | Not detected |
| MADISON | MADISON | 6,191 | Not detected |
| LINCOLN COUNTY RURAL WATER SYSTEM | SIOUX FALLS | 5,965 | Not detected |
| BIG SIOUX COMMUNITY WATER SYSTEM | EGAN | 5,800 | Not detected |
| BROWN-DAY-MARSHALL RWS | BRITTON | 5,673 | Not detected |
| BELLE FOURCHE | BELLE FOURCHE | 5,617 | Not detected |
| SICANGU MNI WICONI RURAL WATER SYSTEM | 5,610 | Not detected | |
| ROSEBUD RURAL WATER SYSTEM | 5,500 | Not detected | |
| SOUTH LINCOLN RURAL WATER SYSTEM | BERESFORD | 5,250 | Not detected |
| GRANT-ROBERTS RURAL WATER SYSTEM | MILBANK | 5,050 | Not detected |
| TRIPP COUNTY WATER USER DISTRICT | HAMILL | 4,860 | Not detected |
| CLAY RURAL WATER SYSTEM | WAKONDA | 4,780 | Not detected |
| WR/LJ - MNI WICONI | MURDO | 4,720 | Not detected |
| BLACK HAWK WATER USER DISTRICT | BLACK HAWK | 4,500 | Not detected |
| SIOUX RURAL WATER SYSTEM | GOODWIN | 4,280 | Not detected |
| TM RURAL WATER DISTRICT | PARKER | 4,250 | Not detected |
| EAGLE BUTTE | EAGLE BUTTE | 4,000 | Not detected |
| DELL RAPIDS | DELL RAPIDS | 3,633 | Not detected |
| OGLALA RWS PIPELINE | 3,562 | Not detected | |
| HOT SPRINGS | HOT SPRINGS | 3,395 | Not detected |
| MOBRIDGE | MOBRIDGE | 3,261 | Not detected |
| ST. FRANCIS | 2,450 | Not detected | |
| TRI-COUNTY RURAL WATER SYSTEM | EAGLE BUTTE | 2,190 | Not detected |
| MISSION WATER SYSTEM | 1,500 | Not detected | |
| PHILIP | PHILIP | 759 | Not detected |
| WALL | WALL | 699 | Not detected |
| SUN VALLEY DEVELOPMENT | RAPID CITY | 650 | Not detected |
| TMT, INC. | PIERRE | 250 | Not detected |
| RENDEZVOUS RANCH | BLACK HAWK | 195 | Not detected |