We found 15 public water systems in Switzerland county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Patriot Water Department | Patriot | 7,812 | 0 | 111 |
| Vevay Water Department | Vevay | 1,750 | 0 | 17 |
| Mr. Jackson | Rising Sun | 1,340 | 0 | 0 |
| Tri-state Country Club | County of Switzerland | 285 | 0 | 0 |
| Turtle Creek Boat Harbor | County of Switzerland | 100 | 0 | 0 |
| Ashland Cove Campground | Vevay | 74 | 0 | 0 |
| Swiss Haven Campground | Vevay | 61 | 0 | 0 |
| Wake Riders | Granger | 60 | 0 | 0 |
| Hufford Campground | County of Switzerland | 60 | 0 | 0 |
| Shawnee Campground | County of Switzerland | 50 | 0 | 0 |
| Liberty Hill Haven | Vevay | 25 | 0 | 0 |
| Cap's Marina | County of Switzerland | 25 | 0 | 0 |
| Camp Livingston | Florence | 25 | 0 | 0 |
| Huffard Camp | Florence | 25 | 0 | 0 |
| Shawnee Campground | Florence | 25 | 0 | 0 |