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Boston Harbor and Massachusetts Bay
Massachusetts Water Resources Authority


Flow Limitation

The NPDES permit contains an average dry day flow limit of 436 MGD. Each year, MWRA must submit a report describing demand management programs and water conservation efforts that are being pursued with communities in the service area. The annual report must assess the effectiveness of demand management measures as well as identify planned activities.

Demand Management Reports - Assurance of Compliance with 436 MGD Flow Limit

Many of our reports are in PDF format, which requires Adobe Acrobat Reader®, a free program available from Adobe Systems. To request a paper copy of any report, please contact the MWRA Environmental Quality Department at 617-788-4601, or e-mail us at