| Tri-Lakes Regional Sewer District | Columbia City | 0.19 |
| Gaston Water Works | Gaston | 0.19 |
| Indiana American Water - Farmersburg | Farmersburg | 0.19 |
| Swayzee Wwtp, Town Of | Swayzee | 0.19 |
| Dale Municipal WWTP | Dale | 0.19 |
| Monon WWTP | Monon | 0.19 |
| Rising Sun, City Of | Rising Sun | 0.18 |
| Pierceton WWTP | Pierceton | 0.18 |
| Hamilton Lake Conservancy District | Hamilton | 0.18 |
| Brooklyn WWTP | Brooklyn | 0.18 |
| Rockport North Wastewater Treatment Plant | Rockport | 0.18 |
| Covington WWTP | Covington | 0.18 |
| Shipshewana WWTP | Shipshewana | 0.18 |
| Hagerstown WWTP | Hagerstown | 0.18 |
| Tipton/ Getrag Division E WWTP | Tipton | 0.17 |
| Lagrange Co Reg Utility Dist - Region B | Lagrange | 0.17 |
| Converse WWTP | Converse | 0.17 |
| Montgomery Wastewater Treatment Plant | Montgomery | 0.17 |
| Clayton WWTP | Clayton | 0.16 |
| South Whitley WWTP | South Whitley | 0.16 |
| Kouts Municipal WWTP | Kouts | 0.16 |
| Dillsboro WWTP | Dillsboro | 0.16 |
| Mooreland Env. Control Center WWTP | Mooreland | 0.15 |
| Roanoke WWTP | Roanoke | 0.15 |
| Topeka WWTP | Topeka | 0.15 |
| Jennings Northwest Regional Utility | North Vernon | 0.15 |
| Shirley WWTP | Shirley | 0.15 |
| Russiaville WWTP | Russiaville | 0.14 |
| Montezuma Wwtp, Town Of | Montezuma | 0.14 |
| Vevay WWTP | Vevay | 0.14 |
| Ashley WWTP | Ashley | 0.14 |
| Clay City Wwtp, Town Of | Clay City | 0.14 |
| Lakeland Regional Sewer District | Warsaw | 0.14 |
| Bourbon WWTP | Bourbon | 0.14 |
| South Henry Rwd WWTP | Lewisville | 0.14 |
| Galveston Wastewater Treatment Plant | Galveston | 0.13 |
| Nature Works Conservancy District | Valparaiso | 0.13 |
| Cannelton Municipal Sewage Tr | Cannelton | 0.13 |
| Mapleturn Utilities, Inc.-Treatment Plant | Martinsville | 0.13 |
| Gem Utilities, Inc. Northern WWTP | New Palestine | 0.13 |
| Wolcottville WWTP | Wolcottville | 0.13 |
| Thorntown Utilities-Treatment Plant | Thorntown | 0.13 |
| Orleans Municipal WWTP | Orleans | 0.13 |
| Markle WWTP | Markle | 0.13 |
| Fowler Municipal WWTP | Fowler | 0.13 |
| Mulberry WWTP | Mulberry | 0.12 |
| Colfax Wwtp, Town Of | Colfax | 0.12 |
| Riley WWTP | Terre Haute | 0.12 |
| New Paris Conservancy District | New Paris | 0.12 |
| Poseyville Municipal WWTP | Poseyville | 0.12 |
| Elberfeld WWTP | Elberfeld | 0.12 |
| Anderson Township Regional Sewer Dist. | Milroy | 0.12 |
| Worthington Municipal WWTP | Worthington | 0.12 |
| Argos Wastewater Treatment Plant | Argos | 0.12 |
| Wolcott Municipal WWTP | Wolcott | 0.12 |
| Morgantown Water Utility-Treatment Plant #1 | Morgantown | 0.12 |
| Hope WWTP | Hope | 0.12 |
| Ladoga Municipal WWTP | Ladoga | 0.12 |
| New Market WWTP | New Market | 0.11 |
| Holland WWTP | Holland | 0.11 |
| New Pekin Wastewater Treatment Plant | Pekin | 0.11 |
| Owensville Municipal WWTP | Owensville | 0.11 |
| Ridgeville WWTP | Ridgeville | 0.11 |
| Sunman Waste Water Treatment | Sunman | 0.11 |
| Dugger Wwtp, Town Of | Dugger | 0.11 |
| Parker City WWTP | Parker City | 0.11 |
| Milford WWTP | Milford | 0.11 |
| North Liberty WWTP | North Liberty | 0.1 |
| Hymera Municipal STP | Hymera | 0.1 |
| Kirklin WWTP | Kirklin | 0.1 |
| Summitville WWTP | Summitville | 0.1 |
| Windfall WWTP | Windfall | 0.1 |
| Bass Lake Conservancy District | Knox | 0.09 |
| Cromwell WWTP | Cromwell | 0.09 |
| Walton WWTP | Walton | 0.09 |
| Jamestown WWTP | Jamestown | 0.09 |
| Winslow Municipal WWTP | Winslow | 0.09 |
| South Central Rsd Caslon WWTP | Bloomington | 0.09 |
| Florence Regional Sewer District | Florence | 0.09 |
| Van Buren WWTP | Van Buren | 0.09 |
| Town Of Morocco WWTP | Morocco | 0.09 |
| Lynnville WWTP | Lynnville | 0.09 |
| Akron Municipal STP | Akron | 0.09 |
| St. Paul WWTP | St Paul | 0.08 |
| Rome City WWTP | Rome City | 0.08 |
| Waldron Conservancy District | Waldron | 0.08 |
| Palmyra WWTP | Palmyra | 0.08 |
| Clarks Hill Municipal WWTP | Clarks Hill | 0.08 |
| Carthage WWTP | Carthage | 0.08 |
| West Lakes Regional Sewer District | Wawaka | 0.08 |
| Brook Wwtp, Town Of | Brook | 0.08 |
| Leavenworth WWTP | Leavenworth | 0.08 |
| Montgomery County Rsd - Nucor Road WWTP | Crawfordsville | 0.08 |
| Lake Of The Woods Reg Sew Dist | Bremen | 0.07 |
| Roachdale Municipal WWTP | Roachdale | 0.07 |
| Koontz Lake Regional Sewer District | Walkerton | 0.07 |
| Lake Santee Regional Waste And Water District | Greensburg | 0.07 |
| Staunton Wastewater Treatment Plant | Staunton | 0.07 |
| Lake Eliza Area Conservancy District | Hebron | 0.07 |
| Chalmers Municipal WWTP | Chalmers | 0.07 |
| Little Raccoon Rsd | Waveland | 0.07 |
| Bunker Hill Wwtp, Town Of | Bunker Hill | 0.07 |
| Oldenburg WWTP | Oldenburg | 0.07 |
| Waynetown Municipal WWTP | Waynetown | 0.07 |
| Burlington Wastewater Treatment Plant | Burlington | 0.07 |
| Michigantown Municipal WWTP | Michigantown | 0.07 |
| Fairview Park WWTP | Fairview Park | 0.07 |
| Reynolds Municipal WWTP | Reynolds | 0.07 |
| Prairie Utilities Kokomo WWTP | Sharpsville | 0.07 |
| Twin Lakes Rsd Snow Ditch WWTP | Monticello | 0.07 |
| Goodland Municipal WWTP | Goodland | 0.07 |
| Lynn WWTP | Lynn | 0.07 |
| Darlington Municipal WWTP | Darlington | 0.06 |
| New Harmony Wastewater Treatment Plant | New Harmony | 0.06 |
| Cayuga Municipal WWTP | Cayuga | 0.06 |
| Kingsford Heights Municipal W | Kingsford Heights | 0.06 |
| Pennville WWTP | Pennville | 0.06 |
| Wheatfield Municipal WWTP | Wheatfield | 0.06 |
| Kingman Municipal WWTP | Kingman | 0.06 |
| Millersburg Municipal Sewage Treatment Plant | Millersburg | 0.06 |
| La Fontaine Wwtp, Town Of | La Fontaine | 0.06 |
| Medora WWTP | Medora | 0.06 |
| Lagrange Co Reg. Utility Dist - Region A | Lagrange | 0.06 |
| Dupont WWTP | Dupont | 0.06 |
| Lakeville Wastewater Treatment Plant | Lakeville | 0.06 |
| Western Rush Co Rwsd WWTP | Homer | 0.06 |
| Matthews Wwtp, Town Of | Matthews | 0.06 |
| West College Corner Wwtp, Town Of | West College Corner | 0.06 |
| Summit Springs Regional Waste District WWTP | Mount Summit | 0.06 |
| Lizton WWTP | Lizton | 0.06 |
| Birdseye Municipal WWTP | Birdseye | 0.06 |
| Boswell WWTP | Boswell | 0.06 |
| Nyona/south Mud Lake C.D. | Macy | 0.05 |
| Amo-Coatesville Conservancy District WWTP | Amo | 0.05 |
| Lapaz Municipal WWTP | Lapaz | 0.05 |
| St. Joe - Spencerville WWTP | St. Joe | 0.05 |
| Bainbridge Municipal WWTP | Bainbridge | 0.05 |
| Monroe City WWTP | Monroe City | 0.05 |
| Otterbein WWTP | Otterbein | 0.05 |
| Galena WWTP | Galena | 0.05 |
| Linden Municipal WWTP | Linden | 0.05 |
| Roann WWTP | Roann | 0.05 |
| Center Point | Centerpoint | 0.05 |
| Silver Lake WWTP | Silver Lake | 0.05 |
| Gosport WWTP | Gosport | 0.04 |
| Moores Hill WWTP | Moores Hill | 0.04 |
| Paragon WWTP | Paragon | 0.04 |
| La Otto Regional Sewer District | Laotto | 0.04 |
| Washington Township Water | New Washington | 0.04 |
| West Lebanon Public Water Work | West Lebanon | 0.04 |
| Stilesville WWTP | Stilesville | 0.04 |
| Dana WWTP | Dana | 0.04 |
| Kennard WWTP | Kennard | 0.04 |
| Holton Wwtp, Town Of | Holton | 0.04 |
| Hamlet Municipal WWTP | Hamlet | 0.04 |
| Napoleon Community Rural Water Corp. | Napoleon | 0.03 |
| Francesville Municipal WWTP | Francesville | 0.03 |
| Adams Lake Rsd | Wolcottville | 0.03 |
| Greens Fork WWTP | Greens Fork | 0.03 |
| Mexico Regional Sewer District | Mexico | 0.03 |
| Advance Wwtp, Town Of | Advance | 0.03 |
| Chrisney Water Department | Chrisney | 0.03 |
| Marengo Municipal WWTP | Marengo | 0.03 |
| Denver Municipal WWTP | Denver | 0.03 |
| Lanesville WWTP | Lanesville | 0.03 |
| Hillsboro Municipal WWTP | Hillsboro | 0.03 |
| Switz City Municipal WWTP | Switz City | 0.03 |
| Medaryville Municipal WWTP | Medaryville | 0.03 |
| Jefferson Township Rsd | Otwell | 0.03 |
| Etna Green WWTP | Etna Green | 0.03 |
| Oxford Municipal WWTP | Oxford | 0.03 |
| Francisco WWTP | Francisco | 0.03 |
| Lauramie Township Rsd | Stockwell | 0.02 |
| Gnaw Bone Regional Sewer District | Nashville | 0.02 |
| Fulton Municipal WWTP | Fulton | 0.02 |
| Freelandville Regional Sewer District | Freelandville | 0.02 |
| Claypool WWTP | Claypool | 0.02 |
| Schneider WWTP | Schneider | 0.02 |
| North Salem WWTP | North Salem | 0.02 |
| Jackson County Regional Sewer District | Freetown | 0.02 |
| Glenwood WWTP | Glenwood | 0.02 |
| New Richmond Municipal WWTP | New Richmond | 0.02 |
| East Enterprise Rsd | Bennington | 0.02 |
| Corunna WWTP | Corunna | 0.02 |
| Bryant WWTP | Bryant | 0.02 |
| Burnettsville WWTP | Burnettsville | 0.02 |
| Milltown WWTP | Depauw | 0.02 |
| Second Tamerix Lake Addition | Columbus | 0.02 |
| Laurel WWTP | Laurel | 0.02 |
| Friendship Rsd WWTP | Friendship | 0.02 |
| Monterey WWTP | Monterey | 0.02 |
| Elizabethtown WWTP | Elizabethtown | 0.02 |
| Lake Dalecarlia Rwd WWTP | Lowell | 0.02 |
| Carbon Municipal STP | Carbon | 0.02 |
| Posey County Rsd - Harbortown WWTP | Mount Vernon | 0.02 |
| Modoc, Town Of | Modoc | 0.01 |
| Hartsville WWTP | Hartsville | 0.01 |
| Uniondale WWTP | Uniondale | 0.01 |
| Shamrock Lakes WWTP | Hartford City | 0.01 |
| Mt Etna WWTP | Mount Etna | 0.01 |
