| West Rankin Utility Authority WWTF | Richland | 11.91 |
| Dcrua, Short Fork WWTF | Hernando | 7.02 |
| Meridian POTW | Meridian | 6.9 |
| Jcua - West Jackson County WWTP | Pascagoula | 5.13 |
| West Biloxi Wastewater Treatment Plant | Biloxi | 4.89 |
| Canton Mun Util-Beatties Bluff WWTF | Canton | 4.44 |
| Reynolds R. Ridgely Wastewater Plant | Columbus | 3.46 |
| Harrison County Wastewater And Solid Waste Management Authority, East Biloxi Pot | Biloxi | 3 |
| City Of Greenwood - Wastewater Treatment Plant | Greenwood | 2.96 |
| Laurel Potw, Number 1 | Laurel | 2.8 |
| Corinth POTW | Corinth | 2.74 |
| Hcua, Long Beach And Pass Christian | Pass Christian | 2.63 |
| Natchez POTW | Natchez | 2.08 |
| Jackson POTW - Trahon And Big Creek WWTF | Jackson | 2.08 |
| Brookhaven POTW | Brookhaven | 1.85 |
| Aberdeen East WWTP | Aberdeen | 1.67 |
| Cleveland POTW | Cleveland | 1.37 |
| Clarksdale POTW | Clarksdale | 1.33 |
| Morton POTW | Morton | 1.25 |
| Amory POTW | Amory | 1.07 |
| Jackson County Utility Authority, POTW 6c | Moss Point | 1 |
| Diamondhead Water Sewer District | Diamondhead | 0.97 |
| Bay Springs Industrial Park | Bay Springs | 0.96 |
| Saltillo POTW | Saltillo | 0.92 |
| Batesville POTW | Batesville | 0.9 |
| Desoto County Regional Utility Authority, Johnson Creek Wastewater Treatment Fac | Walls | 0.84 |
| Waynesboro POTW | Waynesboro | 0.74 |
| Pearl River Wastewater Treatment Plant | Philadelphia | 0.73 |
| Indianola POTW | Indianola | 0.73 |
| Tunica County Utility District | Robinsonville | 0.71 |
| Pontotoc, City Of, Activated Sludge Facility | Pontotoc | 0.7 |
| Pearl River County Utility Authority, Neal Road POTW | Picayune | 0.65 |
| South Woolmarket Water Reclamation Facility | Biloxi | 0.54 |
| Houston POTW | Houston | 0.5 |
| Florence POTW | Florence | 0.46 |
| University Of Mississippi, The | University | 0.42 |
| Metro Desoto Utilities | Olive Branch | 0.41 |
| Water Valley POTW | Water Valley | 0.38 |
| Long Beach Industrial District Park | Long Beach | 0.3 |
| Inverness POTW | Inverness | 0.29 |
| Chickasaw Trail WWTP | Byhalia | 0.25 |
| Hancock Co Port & Harbor Commission | Bay Saint Louis | 0.22 |
| Como POTW | Como | 0.14 |
| New Harmony WWTP | Philadelphia | 0.13 |
| Harrison County School District | Gulfport | 0.11 |
| Bolivar County Correctional Facility, The | Cleveland | 0.11 |
| Neshoba County | Philadelphia | 0.1 |
| Lafayette County Industrial Park | Oxford | 0.08 |
| Cleary Heights POTW | Florence | 0.08 |
| Harrison County Utility Authority, Tradition Development | Gulfport | 0.08 |
| Jumpertown, Town Of, WWTF | Booneville | 0.06 |
| Conehatta School WWTF | Conehatta | 0.04 |
| Raymond POTW | Raymond | 0.03 |
| Standing Pine WWTF | Conehatta | 0.03 |
| Puckett POTW | Puckett | 0.03 |
| Pontotoc County Industrial Park WWTP | Pontotoc | 0.02 |
| Marietta Potw, Hcr Lagoon | Marietta | 0 |
| Ackerman POTW | Ackerman | — |
| Benoit POTW | Benoit | — |
| Blue Mountain POTW | Blue Mountain | — |
| Bruce POTW | Bruce | — |
| Byhalia POTW | Byhalia | — |
| Clinton Briars POTW | Clinton | — |
| Coldwater POTW - North | Coldwater | — |
| Coldwater POTW - Southwest | Coldwater | — |
| Crawford POTW | Crawford | — |
| D Lo POTW | D Lo | — |
| Derma POTW | Calhoun City | — |
| Drew POTW | Drew | — |
| Durant POTW | Durant | — |
| Ecru POTW | Ecru | — |
| Farrell POTW | Farrell | — |
| Fayette Potw, North Lagoon | Fayette | — |
| Fayette Potw, Northeast | Fayette | — |
| Fayette Potw, Southwest | Fayette | — |
| Friars Point POTW | Friars Point | — |
| Golden POTW | Golden | — |
| Grace POTW | Grace | — |
| Hazlehurst Potw, Lagoon | Hazlehurst | — |
| Hcc Inc Dba Homestead Water Association | Fernwood | — |
| Hickory Flat POTW | Hickory Flat | — |
| Hollandale POTW | Hollandale | — |
| Holly Springs Potw, Number 1 | Holly Springs | — |
| Jcua POTW 2c | Gautier | — |
| Jonestown POTW | Jonestown | — |
| Lake Lorman POTW | Madison | — |
| Louise POTW | Louise | — |
| Lucedale POTW | Lucedale | — |
| Lula POTW | Lula | — |
| Lumberton POTW | Lumberton | — |
| Macon POTW | Macon | — |
| Mantachie POTW | Mantachie | — |
| Marks POTW | Marks | — |
| Mayersville POTW | Mayersville | — |
| Mclain POTW | Mc Lain | — |
| Merigold POTW | Merigold | — |
| Ms/alcorn State University | Lorman | — |
| Nettleton POTW | Nettleton | — |
| New Augusta POTW | New Augusta | — |
| New Hebron POTW | New Hebron | — |
| North Carrollton POTW | North Carrollton | — |
| Okolona Potw, South | Okolona | — |
| Pope Sewer District, Town Of | Courtland | — |
| Potts Camp Potw, Northwest | Potts Camp | — |
| Quitman POTW | Quitman | — |
| Schlater POTW | Schlater | — |
| Shannon Potw, West | Shannon | — |
| Shaw POTW | Shaw | — |
| Shelby POTW | Shelby | — |
| Shubuta POTW | Shubuta | — |
| Sidon POTW | Sidon | — |
| Sledge POTW | Sledge | — |
| State Line POTW | State Line | — |
| Sumner POTW | Sumner | — |
| Tip H. Allen Water Treatment Plant | Canton | — |
| Tylertown POTW | Tylertown | — |
| Vaiden POTW | Vaiden | — |
| Woodland POTW | Woodland | — |
