We found 18 public water systems that could serve the same population as Southwick Beach State Park (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Ellisburg Wd 1, 2 & 3 | Ellisburg | 1,100 | 0 | 1 |
| Ellisburg (belleville) | Ellisburg | 500 | 0 | 0 |
| Belleville-henderson Central | Ellisburg | 490 | 0 | 0 |
| Manor House | Ellisburg | 225 | 0 | 0 |
| Brennans Bay Campground And Marina | Ellisburg | 164 | 0 | 1 |
| Wayside Inn - Jefferson Cty | Ellisburg | 90 | 0 | 0 |
| Up The Creek Campground | Ellisburg | 80 | 0 | 0 |
| 81-11 Motel | Ellisburg | 50 | 0 | 0 |
| Northern Lights Christian School | Ellisburg | 45 | 0 | 0 |
| Southwicks General Store | Ellisburg | 25 | 0 | 0 |
| Ellisburg (old3) | Ellisburg | 25 | 0 | 0 |
| Sharps Bulk Food | Ellisburg | 25 | 0 | 0 |
| Phils General Store | Ellisburg | 25 | 0 | 0 |
| Farm Pride | Ellisburg | 25 | 0 | 0 |
| Pierrepont General Store | Ellisburg | 25 | 0 | 0 |
| Our Roadhouse | Ellisburg | 25 | 0 | 0 |
| Foxys Coffee Cup | Ellisburg | 0 | 0 | 0 |
| Ugly Coyote (the) | Ellisburg | 0 | 0 | 0 |