We found 12 public water systems in Logan county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| City Of Russellville | County of Logan | 8,613 | 0 | 30 |
| East Logan Water District | County of Logan | 8,613 | 0 | 17 |
| South Logan Water Association | County of Logan | 5,198 | 0 | 13 |
| Lewisburg Water Works | County of Logan | 3,119 | 0 | 65 |
| City Of Auburn | County of Logan | 1,931 | 0 | 26 |
| North Logan Water District | County of Logan | 1,649 | 0 | 9 |
| Adairville Water Works | County of Logan | 787 | 0 | 8 |
| Olmstead Elementary School | Olmstead | 727 | 0 | 0 |
| Chandler Chapel High School | Auburn | 500 | 0 | 0 |
| Town & Country Water District | Russelville | 495 | 0 | 0 |
| Russellville Water Dist No 1 | Russellville | 300 | 0 | 0 |
| Logan Aluminum Inc | County of Logan | 0 | 0 | 0 |