The
Sewer System
Massachusetts
Water Resources Authority
DEER ISLAND WASTEWATER |
MWRA's sewage treatment system has undergone a nearly complete transformation under the federally mandated 11-year, $3.8 billion Boston Harbor Project. The project, which is now complete, included a new sludge-to-fertilizer facility; the Deer Island Treatment Plant with primary and secondary treatment capabilities; the Inter-Island Tunnel that tied together two separate sewer systems (North and South) into one; and the 9.5-mile Effluent Outfall Tunnel to discharge treated wastewater away from shallow Boston Harbor waters and into the deeper waters and stronger currents of Massachusetts Bay.
| HOW THE SEWER SYSTEM WORKS |
| How the Sewer System Works |
History of the System |
| SEWER TREATMENT FACILITIES |
| Deer Island Sewage Treatment Plant |
| Clinton Wastewater Treatment Plant |
| Nut Island Headworks |
| SEWER PROGRAMS |
| Combined Sewer Overflow Program |
| Toxic Reduction and Control |
| Community Support Program: Infiltration/Inflow Reduction |
| Sludge to Fertilizer Program |
| Bay State Fertilzer |
| The Fore River Railroad |
| SEWER INTERCEPTOR PROJECTS |
| Braintree-Weymouth Relief Facilities Projects, including Fore River Siphons |
| East Boston Sewer Rehabilitation Project |
| Framingham Extension Sewer Repairs (PDF) |
| Upper Neponset Valley Relief Sewer Project (West Roxbury) |
| West Roxbury Sewer Section Rehabilitation |
| ADVISORY GROUPS |
| Wastewater Advisory Committee (WAC) |
Rev.
June 4, 2008 2:26 PM