| 15901 | 3e1d | T | Groton Town PD | Town Police Operations | Law Dispatch |
| 15902 | 3e1e | T | Groton PD2 | Police Secondary | Law Tac |
| 15903 | 3e1f | T | Groton PD3-SU | Police Special Use | Law Tac |
| 15904 | 3e20 | T | Groton PD4-SP2 | Special Ops 2 | Law Tac |
| 15905 | 3e21 | T | Groton PD CID1 | Criminal Investigation Division - 1 | Law Tac |
| 15906 | 3e22 | T | Groton PD CID2 | Criminal Investigation Division - 2 | Law Tac |
| 15907 | 3e23 | T | Groton PD Traff | Police Traffic | Law Tac |
| 15908 | 3e24 | T | Groton EMA | Emergency Management | Emergency Ops |
| 15921 | 3e31 | T | Groton City PD | City Police Operations | Law Dispatch |
| 15931 | 3e3b | T | Groton Amb 1 | Ambulance Operations | EMS Dispatch |
| 15932 | 3e3c | T | Mystic River Amb | Mystic River Ambulance | EMS Dispatch |
| 15933 | 3e3d | T | Groton Amb 2 | Groton Ambulance 2 | EMS-Talk |
| 15934 | 3e3e | T | Mystic FD Adm | Mystic Fire Administration | Fire-Talk |
| 15935 | 3e3f | T | N/Groton LP-FA | Noank / Groton Long Point Fire Administration | Fire-Talk |
| 15936 | 3e40 | T | OldMyst FA | Old Mystic Fire Administration | Fire-Talk |
| 15937 | 3e41 | T | PoqB/C Groton FA | Poquonnock Bridge / Center Groton Fire Administration | Fire-Talk |
