CSO and SSO Notfications

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CSO and SSO Notifications

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Climate Change
Renewable Energy
CSO Control

Aqueduct Trails

Natick Trail

About the Aqueduct Trails
What Not to Flush
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It's a toilet, not a trash can!

Massachusetts Water Resources Authority
Charlestown Navy Yard, 100 First Avenue
Boston, Massachusetts 02129
(617) 242-6000
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Wastewater COVID-19 Tracking

Updated: October 16, 2021

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PFAS Testing in MWRA Drinking Water

May 24, 2021

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MWRA Annual Water Quality Report is in the Mail - Water Named "Best of the Best" in National Water Taste Test

June 16, 2021

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El Informe Anual de Calidad del Agua de MWRA esta en el Correo

June 16, 2021

Important Notice

No updates at this time.

MWRA 24-Hour
Emergency Contacts
Water: 617-305-5950
Sewer: 617-305-5940
Security: 877-697-6972
TTY: 617-371-1903
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About Lead in
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How Much Water Is In Our Reservoirs?
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How much we use

Recent and Historic Data
Harbor and Bay Monitoring
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Facts about Fluoride


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MWRA Work Will Impact Fellsway Traffic in Medford

October 7, 2021

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DCR Issues Reservoir Advisory: Framingham Reservoir No. 1 (Stearns Reservoir)

October 6, 2021

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Update on Weston Aqueduct Supply Main Rehabilitation (WASM) - Arlington, Medford and Somerville (Contract 6544)

September 28, 2021

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Update on Dorchester Interceptor Sewer Sections 240/241/242 Rehabilitation: MWRA Contract 7279

September 28, 2021

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Update for Nut Island Odor Control and HVAC Improvements: MWRA Contract
(MWRA Contract

September 28, 2021

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MWRA to Hold Remote Board of Directors Meeting on September 15, 2021

September 15, 2021

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MWRA Maintenance Work May Cause Traffic Disruption and Construction Noise in Parts of Natick

September 9, 2021

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MWRA Brings Home NACWA Awards

August 5, 2021

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Governor Baker Swears in Two Members of the MWRA Board of Directors

July 30, 2021

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MWRA to Hold Hybrid In-Person/Remote Board of Directors Meeting on July 21, 2021

July 19, 2021

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Boston River Report Cards Show Widespread Improvements in Bacteria Concentrations and Remaining Localized Challenges - US EPA

July 14, 2021

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Algae at Quabbin Reservoir

June 14, 2021

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Announcing Our 2020-2021 Poster and Essay Contest Winners!

June 4, 2021

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MWRA Asks Residents: Please Don't Swim in the Fells

May 20, 2021

News Release Archive Page


Boston's Water Wins Tap vs. Bottled Taste Test
at Old Colony Housing Development

(Boston Public Health Commission YouTube Video)
Updated September 22, 2015

SCATV Video Screen Shot

Mystic River Watershed Association Fighting Back Against Water Chestnut Invasion (via SCATV)

July 29, 2014

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Well vs. MWRA Water Taste Test
on Boston.com

July 22, 2013

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Boston Globe Magazine's Soundtrack video captures the "hypnotic sight and sound" of MWRA's Charlestown Wind Turbine

March 18, 2013

Power of Windmills Courtesy The Travel Channel

The Power of Windmills: Deer Island windmill featured in the Travel Channel's "Off Limits" clip

October 17, 2011

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NECN Presents Underneath it All:
Inside Boston's Sewer System

October 17, 2011

More Videos on Our YouTube Page

Water Reports

MWRA Annual Water Quality Report

2020 Annual Drinking Water Test Results


Monthly Drinking Water Quality Update


Monthly Community Water Use Report


Monthly Water Supply Status Update


Report on Quabbin Pilot Program (PDF)



Sewer Reports

MWRA Every Drop Counts

How Clean is Boston Harbor?

April 23, 2018

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A Healthy Environment Starts at Home

Our free guide to reducing the use of hazardous household products (PDF)

Annual Industrial Waste Report


CSO Post Construction Monitoring and
Performance Assessment Reports


How Clean is Boston Harbor? MWRA Sewer Report


CSO Discharge Estimates and Rainfall Analyses


CSO Water Quality Report (PDF)


Annual CSO Control Plan Progress Report


Annual Infiltration/Inflow Report (PDF)



Harbor, Bay and NPDES Reports

State of Boston Harbor Report


Financial Reports

Final FY 2022 Assessments to Communities (Rates)


Proposed FY22 Capital Improvement Program (CIP)


Final FY21 Current Expense Budget (CEB)


Information for Investors and Capital Finance Business Partners


MWRA Comprehensive Annual Financial Report For the Fiscal Years Ended June 30, 2020 and 2019



Organization and Management Reports

Board of Directors Quarterly Report on Key Indicators of MWRA Performance


Master Plan



Court Report


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