We found 12 public water systems that could serve the same population as Ridgewood Hills Association, System #1 (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Ctwc - Shoreline Region-chester System | Chester, Deep River, Essex | 5,030 | 23 | 45 |
| Valley Regional High School | Deep River | 565 | 0 | 6 |
| John Winthrop Junior High School | Deep River | 400 | 0 | 5 |
| The Clubhouse Of Ct River Valley | Deep River | 90 | 0 | 0 |
| Incarnation Center, Inc | Deep River | 42 | 0 | 0 |
| Mount Saint John School | Deep River | 40 | 0 | 0 |
| Richcat, Llc | Deep River | 25 | 0 | 0 |
| Brewers Deep River Marina | Deep River | 25 | 0 | 0 |
| Winthrop Baptist Church | Deep River | 25 | 0 | 0 |
| 493 Winthrop Road | Deep River | 25 | 0 | 0 |
| Congregation Beth Shalom | Deep River | 25 | 0 | 0 |
| Plattwood Town Park | Deep River | 1 | 0 | 0 |