| Business | Phone |
| Mt Pleasant Utility Billing 401 N Main St, Mount Pleasant 48858 | (989) 779-5387 |
| Mt Pleasant Water Treatment 4195 S Lincoln Rd, Mount Pleasant 48858 | (989) 779-5425 |
| South Side Water Treatment 4795 S Mission St, Mount Pleasant 48858 | (989) 773-1454 |