County drinking water records
Clark County, SD drinking water systems
5 community water systems serve Clark County, SD, reporting 8,041 people served in all. A system that also serves other counties counts all of its customers here.
3 of them had at least one health-based violation in the last 10 years. None of those systems has one still unresolved.
5 rely mainly on groundwater, counting water bought from other systems.
Their lead service line inventories list 0 lead lines, 0 galvanized lines that must be replaced and 1,110 lines of unknown material.
3 more systems are placed in Clark County, SD by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.
- Community water systems
- 5
- People served, sum of each system's own figure
- 8,041
- Systems with a health-based violation, last 10 years
- 3
- Systems with one unresolved
- 0
- Lead service lines in inventories
- 0
Water systems serving Clark County
5 systemsPeople served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.
| System | Serves | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Sioux Rural Water System | Watertown, Waverly and 9 more and land outside them | 4,280 | Groundwater | 1 | 0 | 0 |
| Clark Rural Water System | Crocker, Clark and 7 more and land outside them | 2,325 | Groundwater | 0 | 0 | 0 |
| Clark | Clark | 1,148 | Purchased groundwater | 0 | 0 | 0 |
| Willow Lake | Willow Lake | 255 | Purchased groundwater | 1 | 0 | 0 |
| Garden City | Garden City | 33 | Purchased groundwater | 5 | 0 | 0 |
Systems placed by county record in Clark County
3 systemsThe service area maps EPA has for these systems do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.
| System | Serves | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Fordham Colony | County on record | 142 | Groundwater | 0 | 0 | 0 |
| Collins Colony | County on record | 95 | Groundwater | 0 | 0 | 0 |
| Shamrock Colony | County on record | 75 | Groundwater | 1 | 1 | 0 |
Cities and towns in Clark County
10 places- Bradley1 system
- Clark2 systems
- Crocker1 system
- Garden City2 systems
- Hillcrest Colony1 system
- Mayfield Colony1 system
- Naples1 system
- Silver Lake Colony1 system
- Vienna1 system
- Willow Lake1 system
Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations