| Bangor Wastewater Treatment Facility | Bangor | 4.99 |
| Westbrook Waste Water Treatmemt Facility | Westbrook | 2.63 |
| Scarborough Sd WWTF | Scarborough | 1.43 |
| Old Orchard Beach Wastewater Treatment Facility | Old Orchard Beach | 1.17 |
| Sanford Wastewater Treatment Facility | Sanford | 1.12 |
| York Wastewater Treatment Facility | York | 0.89 |
| Old Town Wastewater Treatment Facility | Old Town | 0.78 |
| Falmouth Waste Water Treatment Facility | Falmouth | 0.78 |
| Gardiner WWTF | Gardiner | 0.76 |
| Anson Madison Wastewater Treatment Facility | Madison | 0.67 |
| Ogunquit Wastewater Treatment Facility | Ogunquit | 0.66 |
| Camden Wastewater Treatment Facility | Camden | 0.54 |
| Yarmouth Wastewater Treatiment Facility | Yarmouth | 0.49 |
| Belfast Wastewater Treatment Facility | Belfast | 0.49 |
| Calais Wastewater Treatment Facility | Calais | 0.39 |
| Livermore Falls WWTF | Livermore Falls | 0.35 |
| Kennebunkport Wastewater Treatment Facility | Kennebunkport | 0.33 |
| Pittsfield Wastewater Treatment Facility | Pittsfield | 0.3 |
| Madawaska WWTF | Madawaska | 0.28 |
| Skowhegan Wastewater Treatment Facility | Skowhegan | 0.28 |
| Bucksport Wastewater Treatment Facility | Bucksport | 0.27 |
| Freeport Wastewater Treatment Facility | Freeport | 0.25 |
| South Berwick Sd WWTF | South Berwick | 0.23 |
| Dover-Foxcroft Wastewater Treatment Facility | Dover-Foxcroft | 0.23 |
| Fort Kent WWTF | Fort Kent | 0.22 |
| Ft Fairfield Wastewater Treatment Facility | Fort Fairfield | 0.19 |
| South Cape Elizabeth WWTF | Cape Elizabeth | 0.18 |
| Howland WWTF | Howland | 0.17 |
| Northeast Harbor Wastewater Treatment Facility | Northeast Harbor | 0.16 |
| Wiscasset WWTF | Wiscasset | 0.15 |
| Newport Wastewater Treatement Facility | Newport | 0.15 |
| Bingham WWTF | Bingham | 0.15 |
| Machias Wastewater Treatment Facility | Machias | 0.13 |
| Milo Wastewater Treatment Facility | Milo | 0.12 |
| Richmond Wastewater Treatment Facility | Richmond | 0.1 |
| Limerick WWTF | Limerick | 0.1 |
| Ashland Wastwater Treatment Facility | Ashland | 0.09 |
| Bethel Wastewater Treatment Facility | Bethel | 0.09 |
| Veazie WWTF | Veazie | 0.09 |
| Eastport WWTF | Eastport | 0.08 |
| Hartland Wastewater Treatment Facility | Hartland | 0.08 |
| Warren Wastewater Treatment Facility | Warren | 0.07 |
| Sabattus Sanitary District | Sabattus | 0.07 |
| Peaks Island STP | Portland | 0.07 |
| Seal Harbor WWTF | Seal Harbor | 0.07 |
| Washburn Wastewater Treatment Facility | Washburn | 0.06 |
| Wastewater Treatment Facility Hulls Cove | Bar Harbor | 0.05 |
| Searsport Wastewater Treatment Facility | Searsport | 0.05 |
| Blue Hill, Wastewater Treatment Facility | Blue Hill | 0.05 |
| Passamaquoddy Wastewater Treatment Facility | Perry | 0.05 |
| Frenchville Wastewater Treatment Facility | Frenchville | 0.04 |
| Penobscot Housing Indian Island | Old Town | 0.04 |
| Castine Wastewater Treatment Facility | Castine | 0.03 |
| Lubec Wastewater Treatment Facility | Lubec | 0.03 |
| Mattawamkeag WWTF | Mattawamkeag | 0.03 |
| Winter Harbor WWTF | Winter Harbor | 0.02 |
| Vinalhaven WWTF | Vinalhaven | 0.02 |
| Somesville WWTF | Mount Desert | 0.02 |
| Danforth WWTF | Danforth | 0.02 |
| Eastport Quoddy WWTF | Eastport | 0.02 |
| Milbridge WWTF | Milbridge | 0.02 |
| Passamaquoddy Water Treatment Facility | Perry | 0.02 |
| Thomaston Waste Water Treatment Facility | Thomaston | 0.01 |
| Grand Isle WWTF | Grand Isle | 0.01 |
| North Haven WWTF | North Haven | 0.01 |
| Biddeford Pool Wastewater Treatment Fac | Biddeford | 0.01 |
| Dark Harbor Wastewater Treatment Facility | Islesboro | 0.01 |
| East Machias WWTF | East Machias | 0.01 |
| Yarmouth Sea Meadows WWTF | Yarmouth | 0.01 |
| Moosehead Sanitary District | Greenville | 0.01 |
| Bayville Village Wastewater Treatment Facility | Boothbay Harbor | 0 |
| Sorrento Wastewater Treatment Facility | Sorrento | 0 |
| Great Salt Bay Sanitary Dist | Nobleboro | 0 |
| Monson Utilities District Subsurface Wwts | Monson | 0 |
| Whitneyville WWTF | Whitneyville | 0 |
| Bar Harbor Wastewater Treatment Facility | Bar Harbor | 0 |
| Eagle Lake Water & Sewer Dist | Wallagrass | 0 |
| Patten Wastwater Treatment Facility | Patten | 0 |
| Ellsworth WWTF Sandfilter | Ellsworth | 0 |
| North Haven Pumping Station | North Haven | 0 |
| Rangeley Wastewater Treatment Facility | Rangeley | 0 |
| Canton Wastewater Treatment Facility | Canton | — |
| Clinton WWTF | Clinton | — |
| Dexter Utility District | Dexter | — |
| Jackman Wastewater Treatment Facility | Jackman | — |
| Norway Wastewater Treatment Facility | Norway | — |
| Subsurface Wastewater Trtmnt Discharge | Bridgton | — |
| Unity Ud WWTF | Unity | — |
