| Business | Phone |
| Dalles City Water & Sewer Office 3400 W 6th St, The Dalles 97058 | (541) 296-5481 |
| Dalles Water Treatment Plant 1900 W 6th St, The Dalles 97058 | (541) 298-1242 |
| Dalles Water Treatment Plant 6780 Reservoir Rd, The Dalles 97058 | (541) 298-1242 |