We found 41 public water systems that could serve the same population as Penny Harman (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Grant Co Psd-northfork-maysville | Maysville, Petersburg | 4,135 | 0 | 3 |
| Petersburg Town Of | Petersburg | 2,841 | 0 | 14 |
| Mountain Top Psd | Mt Storm | 2,072 | 0 | 29 |
| Grant Co Psd-us 220 S | Petersburg | 1,742 | 0 | 2 |
| Bayard Water System | County of Grant | 484 | 0 | 0 |
| Consolidated Coal Co Potomac West Mine | County of Grant | 300 | 0 | 0 |
| Grant Cou Psd-dorcus | County of Grant | 300 | 0 | 0 |
| Grant Co Bd Of Education | County of Grant | 220 | 0 | 0 |
| Grant County Psd Welton Orchard | Petersburg | 218 | 0 | 2 |
| F Mine Bathhouse | Mt Storm | 200 | 0 | 38 |
| Grant Co Psd-northfork-rt4&28 | County of Grant | 165 | 0 | 0 |
| Hanlins Trailer Park | County of Grant | 114 | 0 | 0 |
| Mount Storm Power Center | Mount Storm | 100 | 0 | 0 |
| Big Bend Parking 0511 | Petersburg | 100 | 0 | 0 |
| Big Bend Campground 0510 | Petersburg | 100 | 0 | 0 |
| K And A Kampground (bath House Well) | Mount Storm | 85 | 0 | 0 |
| Ray Rohrbaugh | County of Grant | 45 | 0 | 0 |
| New Creek Investments | Addition | 33 | 0 | 0 |
| Grant Co Recreation Dept | County of Grant | 30 | 0 | 0 |
| Donald Young | County of Grant | 30 | 0 | 0 |
| Kendall Stewart | County of Grant | 25 | 0 | 0 |
| K And A Kampground (grassy Ridge Well) | Mount Storm | 25 | 0 | 0 |
| Hugh Allen | County of Grant | 25 | 0 | 0 |
| Raymond Armentrout | County of Grant | 25 | 0 | 0 |
| Connies Hilltop Restaurant | County of Grant | 25 | 0 | 0 |
| Day Park | County of Grant | 25 | 0 | 0 |
| Raymond Rutherford | County of Grant | 25 | 0 | 0 |
| Alls Stifel | County of Grant | 25 | 0 | 0 |
| Harman C Kile | County of Grant | 25 | 0 | 0 |
| Ed Rosser | County of Grant | 25 | 0 | 0 |
| Bettys Tavern | County of Grant | 25 | 0 | 0 |
| Robert Sites | County of Grant | 25 | 0 | 0 |
| Paul Goldizen | County of Grant | 25 | 0 | 0 |
| A B Ullom | County of Grant | 25 | 0 | 0 |
| Harry Nelson | County of Grant | 25 | 0 | 0 |
| Irk Potts | County of Grant | 25 | 0 | 0 |
| Hiker-fisherman Area | County of Grant | 25 | 0 | 0 |
| Denna R Mcvey | County of Grant | 25 | 0 | 0 |
| James Mcguinness | County of Grant | 25 | 0 | 0 |
| Laurel Run Mining Co | County of Grant | 25 | 0 | 0 |
| Paul Kuhn | County of Grant | 25 | 0 | 0 |