MWRA Water System - Main Page

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Doing Business with MWRA

The Water System
Massachusetts Water Resources Authority

Every day Eastern Massachusetts residents quench their thirsts, bathe, flush toilets, do the dishes and water their lawns with water drawn from the MWRA water system.

Thanks to the Quabbin and Wachusett Watersheds and Reservoirs, 2.5 million people and 5,500 industrial users have one of the most abundant and high quality water supplies in the world.

QUABBIN RESERVOIR
MWRA's primary water source.

HOW THE WATER SYSTEM WORKS

How the Water System Works

History of the MWRA Water System

DRINKING WATER QUALITY

How to Get Your Water Tested: List of DEP Certified Drinking Water Testing Labs

Frequently Asked Questions about MWRA Tap Water

Facts about Lead

Facts About Pharmaceuticals and MWRA Drinking Water

Water hardness/softness

Taste, Odor and Color Concerns

Facts about Fluoride

Water and Health

No Perchlorate in MWRA Water

Your Drinking Water and COVID-19

About Cross Connections

List of Local Water Department Contacts

List of DEP Certified Drinking Water Testing Laboratories

DRINKING WATER TEST RESULTS

All Water Quality Test Results

List of Potential Contaminants Tested for in the MWRA Water System

PFAS (Per-and Polyfluoroalkyl Substances)

UCMR (Unregulated Contaminant Monitoring Rule) Data

Additional Water Quality Data

MAJOR WATER FACILITIES

Overview of MWRA Water System

Water Supply (Reservoirs)

Integrated Water Supply Improvement Program

Watershed Protection

Water Treatment

John J. Carroll Water Treatment Plant

William A. Brutsch Water Treatment Facility

Water Delivery: MetroWest Tunnel

Covered Water Storage

Distribution Pipeline Improvements

MAJOR WATER CONSTRUCTION PROJECTS

Northern Intermediate High Project in Reading (7066)

Northern Intermediate High Project in Reading and Woburn (7471)

Northern Intermediate High Project in Stoneham (7067)

Northern Intermediate High Project in Stoneham and Wakefield
(7478)

Southern Extra High Redundancy and Storage Project (7066)

Water System Redundancy (PDF)

Archive

METROPOLITAN WATER TUNNEL PROGRAM

Metropolitan Water Tunnel Program Main Page

WATER PROGRAMS

Community Support: Local Water System Assistance Program (LWSAP)

Community Support: Lead Service Line Replacement Loan Program or Lead Loan Program (LLP), an Enhancement to the Local Water System Assistance Program (LWSAP) for Member Communities

Water Testing - Laboratory Services

WATER SUPPLY AND DEMAND

Supply and Demand Statistics

Monthly Community Water Use Report

ADVISORY GROUP

Water Supply Citizens Advisory Committee (WSCAC)

WATER CONSERVATION AND EFFICIENCY

Water Conservation and Efficiency Main Page
Water conservation information for member community officials, local businesses and homeowners; free educational brochures and low-flow fixtures; case studies

Demand Management Report (PDF) Annually, MWRA prepares a demand management report (including water conservation) to meet the requirements of its National Pollution Discharge Elimination System (NPDES) Permit regarding wastewater flow to the Deer Island Treatment Plant.

PDF files on this site require Adobe Acrobat Reader® (free download).