Lake County, South Dakota Water Systems
Lake County, South Dakota
9 community water systems on record — 6 active, 3 inactive.
Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace South Dakota’s official records. Always confirm current status with South Dakota before making decisions based on this information.
Community water systems in Lake County, South Dakota
- BIG SIOUX COMMUNITY WATER SYSTEMEGAN · 5,800 servedActive
- CHESTER SANITARY DISTRICTEGAN · 363 servedActive
- GRACEVALE COLONYWINFRED · 100 servedInactive
- KINGBROOK III RURAL WATER SYSTEMARLINGTON · 2,888 servedActive
- MADISONMADISON · 6,191 servedActive
- NUNDANUNDA · 43 servedInactive
- RAMONAARLINGTON · 159 servedActive
- WENTWORTHEGAN · 181 servedActive
- WINFRED WATER DISTRICT INCARLINGTON · 60 servedInactive
| System name | City | Population served | Status |
|---|---|---|---|
| BIG SIOUX COMMUNITY WATER SYSTEM | EGAN | 5,800 | Active |
| CHESTER SANITARY DISTRICT | EGAN | 363 | Active |
| GRACEVALE COLONY | WINFRED | 100 | Inactive |
| KINGBROOK III RURAL WATER SYSTEM | ARLINGTON | 2,888 | Active |
| MADISON | MADISON | 6,191 | Active |
| NUNDA | NUNDA | 43 | Inactive |
| RAMONA | ARLINGTON | 159 | Active |
| WENTWORTH | EGAN | 181 | Active |
| WINFRED WATER DISTRICT INC | ARLINGTON | 60 | Inactive |