| Back River Wastewater Treatment Plant | Baltimore | 121.85 |
| Patapsco Wastewater Treatment Plant | Baltimore | 54.29 |
| Piscataway Swge Plnt | Accokeek | 22.28 |
| Little Patuxent Water Reclamation Plant | Savage | 18.08 |
| Sod Run Wastewater Treatment Plant | Perryman | 10.85 |
| Annapolis WRF | Annapolis | 8.63 |
| Ballenger-Mckinney WWTP | Frederick | 7.4 |
| Ocean City Wastewater Treatment Plant | Ocean City | 7.2 |
| Parkway Wastewater Treatment Plant | Laurel | 6.77 |
| City Of Salisbury Wastewater Treatment Plant | Salisbury | 4.98 |
| Broadneck Water Reclamation Facility | Annapolis | 3.91 |
| Westminster WWTP | Westminster | 3.84 |
| Conococheague WWTP | Williamsport | 2.26 |
| Easton WWTP | Easton | 2.23 |
| Freedom District WWTP | Sykesville | 2.09 |
| Maryland City Water Reclamation Facility | Laurel | 1.56 |
| Northeast River Advanced WWTP | Charlestown | 1.39 |
| The City Of Bowie (ssos) | Bowie | 1.38 |
| Town Of La Plata | La Plata | 1.21 |
| Celanese WWTP | Cumberland | 1.16 |
| Crisfield WWTP | Crisfield | 1.04 |
| George'S Creek WWTP | Westernport | 0.82 |
| Mount Airy WWTP | Mount Airy | 0.79 |
| Wssc Damascus WRRF | Gaithersburg | 0.79 |
| Perryville Wastewater Treatment Plant | Perryville | 0.77 |
| Taneytown Wastewater Treatment Plant | Taneytown | 0.7 |
| Hebron WWTP | Hebron | 0.64 |
| Chestertown WWTP | Chestertown | 0.62 |
| Brunswick WWTP | Brunswick | 0.59 |
| Pocomoke City Wastewater Treatment Facility | Pocomoke City | 0.58 |
| Delmar WWTP | Delmar | 0.56 |
| Thurmont Wastewater Treat.Fac. | Thurmont | 0.56 |
| Worton-Butlertown WWTP | Worton | 0.56 |
| Piney Orchard WWTP | Odenton | 0.54 |
| Hampstead WWTP | Hampstead | 0.52 |
| Manchester WWTP | Manchester | 0.49 |
| Fruitland WWTP | Fruitland | 0.45 |
| Denton WWTP | Denton | 0.44 |
| Poolesville WWTP | Poolesville | 0.4 |
| Indian Head WWTP | Indian Head | 0.4 |
| Town Of Emmitsburg | Emmitsburg | 0.38 |
| Oakland WWTP | Oakland | 0.36 |
| Church Hill Wwtp/ Mes | Church Hill | 0.34 |
| Trout Run WWTP | Mountain Lake Park | 0.33 |
| St. Michael'S WWTP | Saint Michaels | 0.33 |
| Funkstown WWTP | Funkstown | 0.32 |
| Boonsboro WWTP | Boonsboro | 0.3 |
| Port Deposit WWTP | Port Deposit | 0.26 |
| Grantsville WWTP | Grantsville | 0.25 |
| Rock Hall WWTP | Rock Hall | 0.25 |
| Pinto/md Water Services WWTP | Pinto | 0.25 |
| Snow Hill WWTP | Snow Hill | 0.24 |
| Federalsburg WWTP | Federalsburg | 0.23 |
| Hancock WWTP | Hancock | 0.23 |
| Smithsburg WWTP | Smithsburg | 0.22 |
| Rising Sun Town Of WWTP | Rising Sun | 0.21 |
| Middletown - East WWTP | Middletown | 0.18 |
| Middletown WWTP | Middletown | 0.16 |
| Union Bridge WWTP | Union Bridge | 0.16 |
| Twin Cities WWTP | Secretary | 0.15 |
| Myersville WWTP | Myersville | 0.14 |
| Jefferson WWTP | Jefferson | 0.14 |
| Accident WWTP | Accident | 0.12 |
| Talbot County Region V WWTP | Tilghman | 0.12 |
| Clear Spring WWTP | Clear Spring | 0.12 |
| Oxford WWTP | Oxford | 0.12 |
| Chesapeake City North WWTP | Chesapeake City | 0.11 |
| Fountaindale WWTP | Middletown | 0.11 |
| Point Of Rocks WWTP | Point Of Rocks | 0.1 |
| Antietam WWTP | Sharpsburg | 0.1 |
| Sudlersville WWTP | Sudlersville | 0.1 |
| Friendsville WWTP | Friendsville | 0.09 |
| Cherry Hill WWTP | Elkton | 0.09 |
| New Windsor WWTP | New Windsor | 0.09 |
| Cecilton WWTP | Cecilton | 0.08 |
| Rawlings WWTP | Rawlings | 0.08 |
| Trappe WWTP | Trappe | 0.07 |
| Vienna WWTP | Vienna | 0.07 |
| Mill Bottom WWTP | Mount Airy | 0.06 |
| Sharptown WWTP | Sharptown | 0.06 |
| Richlyn Manor WWTP | Perry Hall | 0.06 |
| Tolchester WWTP | Chestertown | 0.06 |
| Pleasant Branch WWTP | Ijamsville | 0.06 |
| Ewell WWTP | Ewell | 0.06 |
| Pheasant Ridge Mhp,llc. | Mount Airy | 0.05 |
| Millington WWTP | Millington | 0.04 |
| Flintstone WWTP | Flintstone | 0.04 |
| Clifton On The Potomac WWTP | Newburg | 0.04 |
| Sandy Hook Wastewater Treatment Facility | Knoxville | 0.03 |
| Preston WWTP | Preston | 0.03 |
| Crellin WWTP | Oakland | 0.03 |
| Betterton WWTP | Betterton | 0.03 |
| Hunter Hill WWTP | Hagerstown | 0.02 |
| Galena WWTP | Galena | 0.02 |
| Harbor View WWTP | Chesapeake City | 0.02 |
| Bloomington WWTP | Bloomington | 0.02 |
| Greenbrier State Park WWTP | Boonsboro | 0.02 |
| White Rock WWTP | Frederick | 0.01 |
| Charles Co Comm Coll | La Plata | 0.01 |
| Crestview Estates WWTP | Frederick | 0.01 |
| I-70 WWTP | Myersville | 0.01 |
| Kitzmiller WWTP | Kitzmiller | 0.01 |
| Kennedyville WWTP | Kennedyville | 0.01 |
| Mount Carmel Woods WWTP | La Plata | 0.01 |
| Oldtown WWTP | Oldtown | 0.01 |
| Point Lookout State Park WWTP | Scotland | 0.01 |
| Spring Meadows WTP-Harford Cou | Jarrettsville | 0.01 |
| Barton Business Park WWTP | Cumberland | 0.01 |
| Sha - Sideling Hill Rest Area WWTP | Hancock | 0.01 |
| Northern Garrett High School | Accident | 0.01 |
| Victor Cullen Center WWTP | Sabillasville | 0 |
| Tylerton WWTP | Tylerton | 0 |
| Greenridge Forestry Camp | Flintstone | 0 |
| New Germany State Park WWTP | Grantsville | 0 |
| Glen Arm Wastewater Treatment Plant (formerly Grumman Wwtp) | Glen Arm | 0 |
| North Caroline High School | Ridgely | 0 |
| Runnymede WWTP | Westminster | 0 |
| Tracey'S Elementary School | Tracys Landing | 0 |
| Ridgely WWTP | Ridgely | 0 |
