| Business | Phone |
| City-Nichols Hills Water Dept 1009 Nw 75th St, Oklahoma City 73116 | (405) 843-6165 |
| Del City Water Treatment Plant 4605 Se 44th St, Oklahoma City 73135 | (405) 671-2871 |
| Del City Waterline Mantnc 4500 Ne 4th St, Oklahoma City 73117 | (405) 671-2875 |
| Hefner Water Treatment Plant 4000 W Hefner Rd, Oklahoma City 73120 | (405) 751-3011 |
| Oklahoma City Water & Waste 2701 Ne 4th St, Oklahoma City 73117 | (405) 239-7608 |
| Oklahoma City Water Dept 420 W Main St # 500, Oklahoma City 73102 | (405) 297-2422 |
| Overholser Pump Station 501 N Pennsylvania Ave, Oklahoma City 73107 | (405) 297-2249 |
| Overholser Water Treatment 601 N Pennsylvania Ave, Oklahoma City 73107 | (405) 297-2845 |
| Wastewater Treatment Plant 4500 Ne 4th St, Oklahoma City 73117 | (405) 671-2879 |