Facilities 201–231 of 231 by average flow
| Facility | City | Flow (MGD) |
|---|---|---|
| Dustin Public Works Authority | Dustin | — |
| Earlsboro Public Works Wwt | Earlsboro | — |
| Elk City, City Of | Elk City | — |
| Erick, City Of | Erick | — |
| Fairland Pwa | Fairland | — |
| Gans, Town Of | Gans | — |
| Garber, City Of | Garber | — |
| Haskell Pub Works Auth | Haskell | — |
| Hobart Public Works Authority | Hobart | — |
| Locust Grove | Locust Grove | — |
| Mccurtain Wwt | Mccurtain | — |
| Mounds Pwa Wwt | Mounds | — |
| North Enid, Town Of | North Enid | — |
| Okay Pwa | Okay | — |
| Pauls Valley Wwt | Pauls Valley | — |
| Porum Public Works Authority | Porum | — |
| Quinton | Quinton | — |
| Ralston | Ralston | — |
| Shidler, City Of | Shidler | — |
| Soper Public Works Authority | Soper | — |
| Stroud South Wwt | Stroud | — |
| Stuart Pwa | Stuart | — |
| Thomas Wwt | Thomas | — |
| Tonkawa-Cl2 Booster Station | Tonkawa | — |
| Union City Wwt Facility | Union City | — |
| Valliant Pwa | Valliant | — |
| Verden, Town Of | Verden | — |
| Wapanucka Public Works Auth. | Wapanucka | — |
| Wellston Pwa | Wellston | — |
| Wister, City Of | Wister | — |
| Woodward, City Of | Woodward | — |