| Business | Phone |
| West Williamson Pump Station Parkway Dr, Williamson 25661 | (304) 235-5534 |
| Williamson Harvey St Pump Sta Vision St, Williamson 25661 | (304) 235-4015 |
| Williamson Pumping Station 317 E 3rd Ave, Williamson 25661 | (304) 235-2102 |
| Williamson Sewage Treatment 240 Parkway Dr, Williamson 25661 | (304) 235-3719 |
| Williamson Sewage Treatment Railroad Ave, Williamson 25661 | (304) 235-3719 |