We found 13 public water systems that could serve the same population as Pen Mar Park (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Mt. Aetna Elem. School | Hagerstown | 134 | 0 | 0 |
| Broadfording Christian Acad. | Hagerstown | 110 | 0 | 0 |
| Cedar Ridge Ministries | Hagerstown | 108 | 0 | 0 |
| Crossroads Activity Center | Hagerstown | 83 | 0 | 0 |
| Emmanuel Baptist Temple | Hagerstown | 50 | 0 | 0 |
| Valley Market | Hagerstown | 43 | 0 | 0 |
| Shamrock Inn | Hagerstown | 43 | 0 | 0 |
| Forty West Lounge | Hagerstown | 25 | 0 | 0 |
| Gateway Seafood | Hagerstown | 25 | 0 | 0 |
| Anita Lynne Home | Hagerstown | 25 | 0 | 0 |
| Ames Dept Store | Hagerstown | 25 | 0 | 0 |
| Good Samaritan Lodge | Hagerstown | 20 | 0 | 0 |
| Liberty Amoco(liberty Gas Station) | Hagerstown | 0 | 0 | 0 |