| Main Town | Town | County | Country | Type | Update |
|---|---|---|---|---|---|
| No | Blackwater | Cornwall | England | Other | EDIT |
| No | Blackwater | Dorset | England | Other | EDIT |
| No | Blackwater | Hampshire | England | Other | EDIT |
| No | Blackwater | Isle of Wight | England | Other | EDIT |
| No | Blackwater | Leinster | Ireland | Other | EDIT |
| No | Blackwater | Norfolk | England | Other | EDIT |
| No | Blackwater | Somerset | England | Other | EDIT |