We found 21 public water systems in Harper county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Buffalo | County of Harper | 1,200 | 0 | 14 |
| Laverne | County of Harper | 1,097 | 0 | 11 |
| Harper Co Water Corp | County of Harper | 198 | 0 | 121 |
| Log Cabin Country Store | County of Harper | 50 | 0 | 0 |
| Ashlock Child Care | County of Harper | 30 | 0 | 0 |
| Laverne Motel | County of Harper | 30 | 0 | 0 |
| Anr Pipeline | County of Harper | 25 | 0 | 0 |
| B & H Bar | County of Harper | 25 | 0 | 0 |
| Erbas Tavern | County of Harper | 25 | 0 | 0 |
| Charley's 2 | County of Harper | 25 | 0 | 0 |
| Chubs Bar & Grill | Counties of Ellis, Harper | 25 | 0 | 0 |
| Sure Foundation Fellowship | County of Harper | 24 | 0 | 0 |
| May Christian School | County of Harper | 20 | 0 | 0 |
| Harper Valley | County of Harper | 20 | 0 | 0 |
| The Country Store | County of Harper | 20 | 0 | 0 |
| May Cafe | County of Harper | 20 | 0 | 0 |
| That Place | County of Harper | 20 | 0 | 0 |
| Carpenter Child Care | County of Harper | 20 | 0 | 0 |
| Arco Oil And Gas | County of Harper | 9 | 0 | 0 |
| Dawnita's Daycare | County of Harper | 7 | 0 | 0 |
| Phillips Pipeline | County of Harper | 7 | 0 | 0 |