We found 21 public water systems that could serve the same population as P I Harbor Assoc. Campground (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Grand Lake Chapel | Presque Isle | 180 | 0 | 5 |
| Pi Harbor Marina | Presque Isle | 120 | 0 | 0 |
| The Portage | Presque Isle | 104 | 0 | 0 |
| Lafarge Presque Isle Quarry | Presque Isle | 100 | 0 | 0 |
| Pi Old Light House Park | Presque Isle | 100 | 0 | 0 |
| Parker House | Presque Isle | 100 | 0 | 0 |
| P I New Lighthouse Pk | Presque Isle | 100 | 0 | 0 |
| Camp Chicagami | Presque Isle | 70 | 0 | 0 |
| Sassin's Grocery | Presque Isle | 60 | 0 | 0 |
| Camp Chickagami | Presque Isle | 50 | 0 | 0 |
| Labell Grocery Llc | Presque Isle | 50 | 0 | 0 |
| Piha Grand Lake Beach House | Presque Isle | 50 | 0 | 0 |
| Fireside Inn Resort | Presque Isle | 50 | 0 | 0 |
| Presque Isle District Library | Presque Isle | 40 | 0 | 0 |
| Pi District Library-grand Lake | Presque Isle | 35 | 0 | 0 |
| Grand Lake Daily Limit | Presque Isle | 30 | 0 | 0 |
| Lafarge Presque Isle Quarry | Presque Isle | 30 | 0 | 0 |
| Presque Isle Township Hall | Presque Isle | 30 | 0 | 0 |
| Lafarge Presque Isle Quarry | Presque Isle | 25 | 0 | 0 |
| Piha N. Bay Beach House | Presque Isle | 25 | 0 | 0 |
| Mdot - Grand Lake, P416 | Presque Isle | 25 | 0 | 0 |