| Business | Phone |
| Watertown Police Dept 34 Cross St, Watertown 2472 | (617) 972-6500 |
| Watertown Police Dept-Traffic 34 Cross St, Watertown 2472 | (617) 972-6547 |
| Watertown Police Detective Div 34 Cross St, Watertown 2472 | (617) 972-6545 |
| Watertown Police-Prosecutors 34 John Sonny Whooley Way, Watertown 2472 | (617) 972-6546 |