Current Projects

CSO and SSO Notfications

Somerville Marginal

CSO and SSO Notifications

Climate Change
Renewable Energy
CSO Control

Aqueduct Trails

Natick Trail

About the Aqueduct Trails
What Not to Flush
Toilet lever what not to flush

It's a toilet, not a trash can!

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

Your Drinking Water and CoVid-19

March 12, 2020


Important Notice

For the week of March 30th, access to the Chelsea Maintenance and Admin Buildings will be limited to all but water and wastewater operations control centers, the water lab, the warehouse and vehicle maintenance. The A/B list is in effect. The ‘B’ list is up, but should remain at home ready to report if directed.  Some ‘B’ staff will need to report to work. They will be contacted directly to report to alternate locations. Laboratory ‘B’ shift should report to work at all locations.

Southborough and Western operations ‘B’ list staff and Deer Island ‘A’ list staff should report as directed this week.

All tele-work staff should work from home as directed.

If you are called in, please continue to practice physical distancing and stay safe.  If you are sick or have symptoms, or have any questions, contact your supervisor

MWRA 24-Hour
Emergency Contacts
Water: 617-305-5950
Sewer: 617-305-5940
Security: 877-697-6972
TTY: 617-371-1903
Sign Up For Notifications

Want to know how your water quality is? Looking for updates on the MWRA construction project in your neighborhood? What if there is a water emergency in your area? MWRA can keep you informed when you’re at home, at work or on the road. Take a few minutes to sign up and get notifications on your phone, by email, or text message.

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About Lead in
Drinking Water
How Much Water Is In Our Reservoirs?
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How much we have
How much we use

Recent and Historic Data
Harbor and Bay Monitoring
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Facts about Fluoride


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Parking at Deer Island

March 22, 2020

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MWRA's March 18, 2020 Board of Directors Meeting to be Held Virtually

March 17, 2020

CoVid-19 and Wipes

March 13, 2020

MWRA Maintenance Work Will Cause Temporary Interruption of Water Service in Medford

March 4, 2020

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MWRA to Temporarily Lower Water Level at Chestnut Hill Reservoir for Invasive Plant Control

Updated February 27, 2020

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MWRA to Temporarily Lower Water Level at Foss Reservoir for Invasive Plant Control

Updated February 27, 2020

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Update for MWRA Northern Intermediate High Project in Stoneham (MWRA Contract 7067)

Updated February 27, 2020

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Update for MWRA Southern Extra High Pipeline Project, Dedham North (MWRA Contracts 7504/7505)

Updated February 27, 2020

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Update on the Alewife Brook Pump Station Rehabilitation Project (MWRA Contract 6797)

Updated February 27, 2020

map courtesy

MWRA Maintenance Work Will Cause Temporary Interruption of Water Service at Some Chestnut Hill Locations

Updated November 26, 2019

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MWRA Work May Cause Discolored Water, Temporary Pressure Changes or Service Loss in Parts of Norwood, Canton, Dedham, Westwood and Stoughton

November 15, 2019

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MWRA Paving in Stoneham Will Require Detour

November 15, 2019

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EWG Report on Drinking Water

October 24, 2019

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Project Update for the Massachusetts Department of Fish and Game Public Access Fishing Pier at Deer Island

October 23, 2019

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MWRA Water Again Named “New England’s Best,” Wins Taste Test at New England Water Works Association Conference

September 26, 2019

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Water Connection Work in Newton to Begin September 16

September 11, 2019

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Special Notice:
Metallic-Tasting Algae in Reservoirs

September 4, 2019


About PFASs in MWRA Drinking Water

Updated August 23, 2019

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New Traffic Plan for South Street, Stoneham
for MWRA Water Main Installation

August 16, 2019

project photo

Update for MWRA Northern Intermediate High Project in Stoneham (MWRA Contract 7067)

Updated August 7, 2019

Swearing in photo

Update on Commonwealth Avenue Pumping Station Improvements: (MWRA Contract 7524)

Updated June 28, 2019

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Notice of Upcoming Work and Public Meeting in Newton

May 8, 2019

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MWRA Featured on WCVB's Chronicle

Learning from the past and preparing for future water needs

March 27, 2019

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New Study Finds Boston Harbor Cleanup Was Worth It

December 17, 2018

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Another Milestone for the Boston Harbor Cleanup - Woods Hole Report on Flounder

November 29, 2018

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

screen shot boston globe water video

Well vs. MWRA Water Taste Test

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

mwra manhole cover

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

October 17, 2011

More Video on Our YouTube Page

Water Reports

MWRA Annual Water Quality Report

2018 Annual Drinking Water Test Results


Monthly Community Water Use Report


Monthly Water Supply Status Update


Monthly Drinking Water Quality Update


Report on Quabbin Pilot Program (PDF)



Sewer Reports

MWRA Every Drop Counts

How Clean is Boston Harbor?

April 23, 2018

A Healthy Environment Starts at Home cover

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 FY20 Current Expense Budget (CEB)


Final FY20 Captial Improvement Program (CIP)


Information for Investors and Capital Finance Business Partners


MWRA Comprehensive Annual Financial Report
For the Fiscal Years Ended June 30, 2018 and 2017


Final FY 2020 Assessments to Communities (Rates)



Organization and Management Reports

Board of Directors Quarterly Report on Key Indicators of MWRA Performance


Master Plan



Court Report


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