| Business | Phone |
| Port Washington Filtration 408 N Lake St, Port Washington 53074 | (262) 284-2172 |
| Port Washington Marina 106 N Lake St, Port Washington 53074 | (262) 284-6606 |
| Port Washington Sewage Trtmnt 450 N Lake St, Port Washington 53074 | (262) 284-5051 |
| Port Washington Town Office 201 W Seven Hills Rd, Port Washington 53074 | (262) 284-3986 |
| Port Washington Town Office 3715 Highland Dr, Port Washington 53074 | (262) 284-3986 |