and Massachusetts Bay
MWRA Environmental Quality
Web Water Quality Reports
Monthly monitoring results from DITP and Combined
Sewer Overflow facilities are summarized in these tables
submitted to regulators. (PDF)
Plant Performance Data (PDF)
Most recent data on the DITP effluent discharges.
Plan Report on Effluent Monitoring (PDF)
Summary of data on pH, fecal coliform, toxicity, oil and grease, and nitrogen
in DITP effluent compared
with limits in the Contingency Plan.
Annual Report on Infiltration
and Inflow (PDF)
Report - Assurance of Compliance with 436 MGD Flow Limit (PDF)
Annual Status of Plant Maintenance (PDF)
Outfall Monitoring Overview (PDF)
Boston Harbor Temperature
Monitoring at the Outfall
Measurements of fecal coliform and Enterococcus in Massachusetts Bay.
Contingency Plan Report
on Ambient Monitoring (PDF)
Monitoring data compared with threshold limits in MWRA's Contingency
Quarterly Report (PDF)
List of ambient monitoring reports published in the last quarter. Includes links to technical reports and other required documents.
Outfall Monitoring Science Advisory Panel briefings
Harbor Beach Water Quality
Historical Harbor and River water quality data