| Deer Island Wastewater Treatment Facility | Winthrop | 249.63 |
| Upper Blackstone Wastewater Treatment Plant | Millbury | 25.4 |
| South Essex Wastewater Treatment Plant | Salem | 19.34 |
| New Bedford Wastewater Treatment Facility | New Bedford | 16.67 |
| Brockton Advanced Water Reclamation Fac | Brockton | 11.37 |
| Pittsfield Wastewater Treatment Facility | Pittsfield | 8.73 |
| Taunton Wastewater Treatment Facility | Taunton | 5.75 |
| Holyoke Water Pollution Control Facility | Holyoke | 5.59 |
| Westborough Wastewater Treatment Plant | Westborough | 4.35 |
| Northampton Wastewater Treatment Plant | Northampton | 4.23 |
| Billerica Wastewater Treatment Facility | Billerica | 3.22 |
| Amherst Wastewater Treatment Plant | Hadley | 2.91 |
| Gardner W W T F | East Templeton | 2.83 |
| Westfield Wastewater Treatment Plant | Westfield | 2.75 |
| Hoosic Wastwater Treament Plant | Williamstown | 2.68 |
| Marlborough DPW Water Division East Plt | Marlborough | 2.34 |
| Rockland Wastewater Plant | Rockland | 2 |
| Greenfield Water Pollution Control Facility | Greenfield | 1.91 |
| Erving Wastewater Treatment Plant #2 | Erving | 1.69 |
| Newburyport Wastewater Treatment Facility | Newburyport | 1.59 |
| Orange Wastewater Treatment Plant | Orange | 1.5 |
| Palmer Water Pollution Control Facility | Palmer (three Rivers) | 1.4 |
| Plymouth Wastewater Treatment Facility | Plymouth | 1.29 |
| Westerly Wastewater Treatment Facility | Marlborough | 1.28 |
| Hull Wastewater Treatment Plant | Hull | 1.16 |
| Middleborough WPCF | Middleborough | 1.16 |
| Hudson W W T F | Hudson | 0.88 |
| Uxbridge Wastewater Treatment Facility | Uxbridge | 0.78 |
| Concord Wastewater Treatment Facility | Concord | 0.76 |
| Salisbury Wastewater Treatment Facility | Salisbury | 0.67 |
| Ipswich Wastewater Treatment Plant | Ipswich | 0.58 |
| Medfield Wastewater Treatment Facility | Medfield | 0.56 |
| Lee Wastewater Treatment Facility | Lee | 0.55 |
| Montague Wastewater Treatment Facility | Montague | 0.54 |
| Spencer Wastewater Treatment Plant | Spencer | 0.49 |
| Lenox Center Wastewater Treatment Facility | Lenox | 0.4 |
| Hadley Wastewater Treatment Plant | Hadley | 0.35 |
| Manchester Wastewater Treatment Facility | Manchester | 0.33 |
| Marion Wastewater Treatment Facility | Marion | 0.31 |
| Merrimac Wastewater Treatment Plant | Merrimac | 0.31 |
| North Brookfield Waste Water Treatment Plant | North Brookfield | 0.28 |
| Upton Wastewater Treatment Facility | Upton | 0.27 |
| Charlton W W T P | Charlton | 0.26 |
| Cohasset Wastewater Treatment Facility | Cohasset | 0.25 |
| Templeton W W T P | Templeton | 0.24 |
| M C I Norfolk Walpole | Norfolk | 0.2 |
| Oxford Rochdale Wastewater Treatment Plant | North Oxford | 0.19 |
| Hatfield Wastewater Treatment Facility | Hatfield | 0.17 |
| Hardwick WPC - Gilbertville | Gilbertville | 0.16 |
| Shelburne Wastewater Treatment Facility | Shelburne | 0.15 |
| Stockbridge W W T P | Stockbridge | 0.15 |
| Leo L. Dubois WPCF - Bridgewater Correction Complex | Bridgewater | 0.15 |
| Sunderland Wastewater Treatment Facility | Sunderland | 0.14 |
| Douglas W W T P | East Douglas | 0.14 |
| Leicester Water Supply WWTF | Leicester | 0.09 |
| Erving Wastewater Treatment Plant #1 | Erving | 0.08 |
| Old Deerfield Wastewater Treatment Plant | Deerfield | 0.08 |
| Russell Wastewater Treatment Facility | Russell | 0.06 |
| Huntington W W T P | Huntington | 0.03 |
| Town Of Wayland W W T P | Wayland | 0.03 |
| West Stockbridge W W T F | West Stockbridge | 0.01 |
| Hardwick WWTP | Hardwick | 0.01 |
| Monroe W W T F | Monroe Bridge | 0.01 |
| Royalston Wastewater Treatment Plant | Royalston | 0.01 |
| Woronoco Village W W T F | Woronoco Village | 0 |
| Erving POTW #3 | Erving | 0 |
