| Business | Phone |
| Cambridge Dockmaster Office 2 Yacht Club Dr, Cambridge 21613 | (410) 228-4031 |
| Cambridge Housing Inspector 705 Leonards Ln, Cambridge 21613 | (410) 228-6466 |
| Cambridge Waste Water Plant 1010 Roslyn Ave, Cambridge 21613 | (410) 228-4466 |
| Cambridge Waste Water Plant Trenton St, Cambridge 21613 | (410) 221-0176 |
| Dhmh Aids Administration 3 Cedar St, Cambridge 21613 | (410) 221-1899 |