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: June 28, 2022

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PFAS Testing in MWRA Drinking Water

Updated June 2022

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Drinking Water Quality

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We're Hiring!

MWRA has a number of job openings. Be part of a team that works to protect public health and the environment.

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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Recent and Historic Data
Harbor and Bay Monitoring
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MWRA Board Approves FY2023 Current Expense Budget and Community Water and Sewer Assessments

June 22, 2022

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MWRA to Hold Remote Board of Directors Meeting on June 22, 2022

June 21, 2022

Status of MWRA Reservoirs

June 17, 2022

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MWRA Water Report is in the Mail

June 6, 2022

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Boston Harbor Islands Reel Fun Fishing Day at Deer Island

June 2, 2022

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OPEB Meeting Notice for June 2, 2022

May 23, 2022

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MWRA Maintenance Potentially to Cause Discolored Water in Arlington

Updated: May 24, 2022

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MWRA to Hold Remote Board of Directors Meeting on May 25, 2022

May 23, 2022

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

May 18, 2022

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MWRA Celebrates Drinking Water Week

May 2, 2022

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Update on Section 89 Northern Intermediate High Pipeline Replacement: MWRA Contract 7117

April 28, 2022

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

April 28, 2022

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Update on Section 23, 24 and 47 Water Mains - Boston and Newton: Contract 6392

April 28, 2022

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Update for Nut Island Odor Control and HVAC Improvements: MWRA Contract
(MWRA Contract 7548)

April 28, 2022

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Update on Wachusett Dam Bastion Improvements (Contract 7697)

April 28, 2022

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Announcing our 2021-2022 Poster and Writing Contest Winners!

April 27, 2022

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Joint Press Release: Alewife Brook/Upper Mystic Combined Sewer Overflow Control Progress Update

April 12, 2022

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Joint Press Release: Charles River Basin Combined Sewer Overflow Control Progress Update

April 12, 2022

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EWG Report on Drinking Water

March 9, 2022

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What You Need to Know About Lead In Tap Water

December 16, 2021

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MWRA Releases Annual Deer Island Outfall Monitoring Report

December 13, 2021

News Release Archive Page


Welcome To Deer Island Pier

Updated November 1, 2021

Visit our YouTube page here

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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

Boston Globe Soudtrack Image

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

2021 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


CSO Annual Report: CSO Discharge Estimates and Rainfall Analyses for Calendar Year 2021


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

Preliminary FY 2023 Assessments to Communities (Rates)


Final FY22 Capital Improvement Program (CIP)


Final FY22 Current Expense Budget (CEB)


Information for Investors and Capital Finance Business Partners


MWRA Comprehensive Annual Financial Report For the Fiscal Years Ended June 30, 2021 and 2020



Organization and Management Reports

Board of Directors Quarterly Report on Key Indicators of MWRA Performance


Master Plan



Court Report


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