Boston Water and Sewer Commission (mwra)
EPA ID: MA3035000 · 675,647 people served · 39 ZIP codes
ZipCheckup's reading of EPA records for Boston Water and Sewer Commission (mwra) (MA3035000): no drinking-water violations recorded since 2021. Across the reporting cycles included in federal data, Boston Water and Sewer Commission (mwra) has no EPA violation entries - the file covers a service population of approximately 675,647 residents and says nothing about individual household plumbing.
Data: EPA SDWIS
Service Area Map
Coverage area for Boston Water and Sewer Commission (mwra) Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: A
Demographics of ZIP Codes Served
The ZIP codes associated with Boston Water and Sewer Commission (mwra) have a median household income of $110,321 and about 926,994 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 77% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 40% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Boston Water and Sewer Commission (mwra)'s water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 11 detections recorded. 4 detections are above the level of a federal PFAS MCL (4 ppt for PFOA and PFOS), with compliance required from 2029.
Comparable Water Systems
Similar-sized systems in Massachusetts
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Boston Water and Sewer Commission (mwra) (EPA ID: MA3035000) is a community water system in Massachusetts that serves approximately 675,647 people from surface water sources.
This system provides water to 39 ZIP codes across 19 communities.
ZIP-Area Home Safety Context: A (100/100)
This is the average Home Safety Score for 31 of 39 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0058 mg/L | No | 2026-06-30 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
2 of 39 ZIP records with known zones are in EPA Radon Zone 1. 5 of 39 ZIP records with known zones are in EPA Radon Zone 2. 32 of 39 ZIP records with known zones are in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by MA or modeled from parcel and building-footprint data.
This system serves 39 ZIP codes:
02026 · 02108 · 02109 · 02110 · 02111 02113 · 02114 · 02115 · 02116 · 02118 02119 · 02120 · 02121 · 02122 · 02124 02125 · 02126 · 02127 · 02128 · 02129 02130 · 02131 · 02132 · 02133 · 02134 02135 · 02136 · 02138 · 02139 · 02151 02163 · 02186 · 02199 · 02205 · 02210 02215 · 02445 · 02446 · 02467
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Boston Water and Sewer Commission (mwra) (MA3035000) on EPA.gov.
Frequently Asked Questions
Is Boston Water and Sewer Commission (mwra) water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Boston Water and Sewer Commission (mwra) in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Boston Water and Sewer Commission (mwra) serve?
Boston Water and Sewer Commission (mwra) serves approximately 675,647 people across 39 ZIP codes in Massachusetts.
Where does Boston Water and Sewer Commission (mwra) get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
MA enforces a limit of 20 ppt for the combined sum of six PFAS (PFOA, PFOS, PFHxS, PFNA, PFHpA and PFDA). The table shows each compound's highest result, which can come from different samples, so it is not compared with that combined limit; the water system's compliance reports give the combined result.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Boston Water and Sewer Commission (mwra): Serves 676K People. https://zipcheckup.com/water-system/ma3035000/
@misc{zipcheckup-water-system-ma3035000,
author = {{ZipCheckup}},
title = {{Boston Water and Sewer Commission (mwra): Serves 676K People}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ma3035000/}
}