We found 10 public water systems that could serve the same population as The Quabbin Retreat (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Petersham Center School | Petersham | 155 | 0 | 2 |
| Harvard Forest | Petersham | 80 | 0 | 0 |
| Petersham Montessori School | Petersham | 34 | 0 | 0 |
| Petersham Country Store | Petersham | 25 | 0 | 0 |
| Quabbin Woods Restaurant | Petersham | 25 | 0 | 0 |
| Petersham Curling Club | Petersham | 25 | 0 | 0 |
| Petersham Town Hall | Petersham | 25 | 0 | 0 |
| Petersham Gun Club | Petersham | 25 | 0 | 0 |
| Maria Assumption Academy | Petersham | 25 | 0 | 0 |
| Petersham Country Club | Petersham | 25 | 0 | 0 |