We found 3 public water systems that could serve the same population as Jefferson County Water Authority (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Festus | Festus | 11,600 | 0 | 3 |
| Herculaneum | Herculaneum | 3,468 | 0 | 5 |
| Jefferson County Water Authority | Festus, Herculaneum | 25 | 0 | 0 |