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CSO and SSO Reporting

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CSO and SSO Notifications

Annual Poster and Writing Contest for 2017-2018
Renewable Energy
CSO Control
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
Important Notice


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Sewer: 617-305-5940
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TTY: 617-371-1903
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Board of Directors
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About Lead in
Drinking Water
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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
MWRA Every Drop Counts

MWRA Urges Customers to Conserve Water

July 16, 2018

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Your Annual Drinking Water Report is In the Mail

June 6, 2018

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El informe anual sobre la calidad del agua del MWRA está en el correo

July 10, 2018

MWRA Every Drop Counts

How Clean is Boston Harbor?
The Answer is on the Way to Your Mailbox

April 23, 2018

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MWRA Board Approves $100 Million in Funding to Remove Lead Service Lines

Facts about Lead in Drinking Water

How to Get Your Water Tested

For Local Water Service Providers: Lead Loan Program (LLP)


mwra crew at Long Wharf

Visit MWRA's Free Drinking Water Fountain at Local Events this Summer and Fall

Updated October 16, 2018

West Roxbury map courtesy

MWRA Work May Impact Traffic Near Morton Street and Selden Street, West Roxbury

October 4, 2018

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

October 1, 2018

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

October 1, 2018

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Update on Northern Intermediate High Project in Stoneham and Wakefield (MWRA Contract 7478)

October 1, 2018

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Update for MWRA Southern Extra High Pipeline Project, Dedham North (MWRA Contract 7504)

October 1, 2018

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Update for Update for MWRA Reading Extension Sewer Rehabitation
(MWRA Contract 7164)

October 1, 2018

Everett map courtesy

MWRA Work May Cause Discolored Water in Parts of Everett

September 28, 2018

Dedham map courtesy

MWRA Public Meeting Notice
Update on Water Projects in Dedham

September 10, 2018

Everett map courtesy

Aquatic Invasive Plant Removal at Chestnut Hill Reservoir

September 10, 2018

Pine Tree Preserve Rendering

Update on the Pine Tree Preserve Trail Project, Chestnut Hill

August 22, 2018

mwra crew at Long Wharf Governor Baker Swears in Andrew M. Pappastergion to Eighth Term on MWRA Board of Directors

August 22, 2018

mwra crew at Long Wharf PFASs Not Found in MWRA Drinking Water

August 17, 2018

work photo reading

Chestnut Hill Reservoir Fish

August 10, 2018

MWRA Valve Work May Cause Discolored Water, Low Pressure in Areas of Arlington

August 10, 2018

mwra crew at Long Wharf

MWRA Water Line Work to begin on August 13, 2018; Excavation on Bow Street at Madison Street in Malden

August 9, 2018

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MWRA Board Approves FY 2019 Budgets, Community Assessments

June 20, 2018

work photo reading

Update on Algae Bloom at Chestnut Hill Reservoir

Updated June 6, 2018

USEPA Charles River

Charles River Water Quality Improvements Earns an A- for the Second Time in the Past Five Years (Via US EPA)

June 1, 2018

work photo reading

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

May 18, 2018

work photo reading

Update on the Northern Intermediate High Pipeline Project in Reading and Woburn (MWRA Contract 7471)

May 4, 2018

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Update for MWRA Water Project 6454
Southern Extra High Redundancy and Storage Project

May 4, 2018

Image Alewife Brook

Joint Public Notice: Alewife Brook Combined Sewer Overflow Control Progress Update

April 20, 2018

mwra 7235 progress photo

Update on the Hatchery Pipeline and Hydroelectric Project (MWRA Contract 7235)

March 6, 2018

Galvin MS Student at MWRA Fountain

Governor Baker Swears in John Carroll
for Tenth Term on MWRA Board of Directors

October 4, 2017

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

2017 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

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)

How Clean is Boston Harbor? MWRA Sewer Report


CSO Discharge Estimates and Rainfall Analyses


Annual Industrial Waste Report


Annual CSO Control Plan Progress Report


Annual Infiltration/Inflow Report (PDF)



Harbor, Bay and NPDES Reports

State of Boston Harbor Report


Financial Reports

Information for Investors and Capital Finance Business Partners


Final FY19 Current Expense Budget (CEB)


Final FY19 Captial Improvement Program (CIP)


Final FY18 Assessments to Communities (Rates)



Organization and Management Reports

Board of Directors Quarterly Report on Key Indicators of MWRA Performance



Court Report


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