We found 14 public water systems in Clark county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Clark Co Cons Pwsd 1 | Williamstown | 7,140 | 0 | 5 |
| Kahoka Public Works | Kahoka | 2,165 | 0 | 3 |
| Clark Co Pwsd #1- Willia | Williamstown | 1,902 | 0 | 0 |
| Wayland | Wayland | 533 | 0 | 0 |
| WYACONDA | Wyaconda | 227 | 0 | 40 |
| Morgan Oil Company Restau | Morgan Oil Comp | 200 | 0 | 0 |
| Revere C-3 Schools | Revere | 200 | 0 | 0 |
| Running Fox Elem School | Alexandria | 162 | 0 | 0 |
| Mitchell Cafe | Mitchell Cafe | 100 | 0 | 0 |
| Kara Baptist Academy | Alexandria | 25 | 0 | 0 |
| Earnie's Cafe | County of Clark | 25 | 0 | 0 |
| Bob Lands Texaco | County of Clark | 25 | 0 | 0 |
| First Baptist Church | First Baptist | 25 | 0 | 0 |
| Battle Of Athens Historic Site | Reneu | 25 | 0 | 0 |