| Business | Phone |
| Toledo Area Sanitary District 5015 Stickney Ave, Toledo 43612 | (419) 726-7891 |
| Toledo Public Utilities Dept 211 N Huron St, Toledo 43604 | (419) 245-1315 |
| Toledo Public Utilities Dept 600 Jefferson Ave, Toledo 43604 | (419) 245-1315 |
| Toledo Utilities Dept 420 Madison Ave, Toledo 43604 | (419) 245-1800 |
| Toledo Wastewater Treatment 3900 N Summit St, Toledo 43611 | (419) 729-3861 |
| Toledo Water Treatment 600 Collins Park Ave, Toledo 43605 | (419) 936-3021 |