System Snapshot
Available system-level context
This snapshot shows the identity and context fields currently available for Boston Water and Sewer Commission (PWSID 3035000). Read it with the source links and limitations below.
System identity
- PWSID
- 3035000
- State
- Massachusetts
- Linked communities
- Boston
- County context
- Not listed in current record
- System type
- Community water system
- Source water
- Purchased treated surface water from MWRA
- Population served context
- 675,647
- Service connections
- 88,895
- Latest reviewed report
- 2025 report link found
- Data updated
- 2026-07-12
Population served is shown only when it appears in the available source records.
Read these as system-level fields from reviewed public records. Confirm provider and address-specific questions with official utility, city, state, or EPA sources.
Report-Listed Rows
Report-listed rows summarized from the latest reviewed report
2 report-listed rows are summarized for Boston Water and Sewer Commission. A listed row is not the same thing as a current advisory or household tap result.
- Report year
- 2025
- Rows summarized
- 2
- Source tables represented
- 1
- Scope
- Past reporting period
| Substance and testing period | Reported value | Range in report | Limit or standard | Source table | Report-printed status |
|---|---|---|---|---|---|
| LeadTesting period: September/October 2025Sites above action level4 of 33 | 22.5 ppb90th Percentile Value | 0.675-203 | Action Level: 15; MCLG: 0 | City of Boston Lead and Copper Results, September/October 2025Page 9 | Action Level: Exceeded, as printed for this sample period |
| CopperTesting period: September/October 2025Sites above action level0 of 33 | 79.1 ppb90th Percentile Value | 2.3-132 | Action Level: 1300; MCLG: 1300 | City of Boston Lead and Copper Results, September/October 2025Page 9 | Action Level: Below, as printed for this sample period |
Report row
Lead
- Range in report
- 0.675-203 ppb
- 90th Percentile Value
- 22.5 ppb
- Testing period
- September/October 2025
- Sites above action level
- 4 of 33
- Limit or standard
- Action Level: 15; MCLG: 0
- Report-printed status
- Action Level: Exceeded, as printed for this sample period
Report row
Copper
- Range in report
- 2.3-132 ppb
- 90th Percentile Value
- 79.1 ppb
- Testing period
- September/October 2025
- Sites above action level
- 0 of 33
- Limit or standard
- Action Level: 1300; MCLG: 1300
- Report-printed status
- Action Level: Below, as printed for this sample period
Source report notes
Source: Boston Water and Sewer Commission 2025 report. Retrieved 2026-07-12.
- Applies to: Lead
Boston-local fall 2025 sampling in homes known to have a lead service line. This row is from the BWSC appendix for PWSID 3035000, not the MWRA regional PWSID 6000000 table. The source calls this an Action Level exceedance; no separate violation classification is inferred.
- Applies to: Copper
Boston-local fall 2025 sampling in homes known to have a lead service line. This row is from the BWSC appendix for PWSID 3035000, not the MWRA regional PWSID 6000000 table.
Review the linked source report for definitions, footnotes, and official wording.
Violation Records
Violation records shown on this page
This section shows 0 system-scoped violation detail records currently included for Boston Water and Sewer Commission. Annual reports and current notices can use different timing and terminology.
No system-scoped violation detail records are included in the available reviewed records for this system. This is not an official compliance finding. Check the official utility, state, or EPA source for current compliance and notice information.
Source notes for this system mention violation-related context, but this page does not currently display separate system-scoped violation detail records.
Important limitation
Profile summary note
This page summarizes public records reviewed by this site. It does not replace official notices, utility updates, or state drinking water information.
System profile limitations
- The 2025 report is a composite document. Pages 1–8 describe MWRA PWSID 6000000; only the Boston/BWSC appendix on pages 9–10 supplies the local PWSID 3035000 Lead and Copper rows summarized here.
- Boston's September/October 2025 high-risk-home sampling printed a Lead 90th percentile of 22.5 ppb, above the 15 ppb Action Level, with 4 of 33 samples above that level. This is an action-level result, not a site-created violation classification.
- Lead and Copper results from selected higher-risk homes do not determine conditions at a particular tap. Use the official BWSC lead guidance, service-line map, Lead Hotline at 617-989-7888, or emergency/customer line at 617-989-7000 for current next steps.
- Annual-report values describe the 2025 reporting period. Use BWSC's official news and events path for current notices or updates.
- The Boston city relationship supports navigation but does not prove the provider for every address. Confirm service with a bill, account portal, BWSC, or MassDEP record.
- Address-level service can vary. Confirm the serving provider with a bill, account portal, utility, city, or state source.
- This page shows summarized entries from the available report. It does not include a complete contaminant or violation table.
- Missing fields are not findings. They mean the field is not shown on this page from the records currently available.
Latest Reviewed Report
Latest reviewed report found by this site
The 2025 report found for Boston Water and Sewer Commission summarizes a past reporting period. It is not a live alert page.
Boston Water and Sewer Commission 2025 Drinking Water Report
Open 2025 water quality report (opens in a new tab)The 2025 report link is available for Boston Water and Sewer Commission. Use the linked source report for the full table, definitions, footnotes, and official context. This page includes summarized entries from the available report. They are not a complete copy of the report table.
- Report year
- 2025
- Summarized entries shown
- 2
- Source name
- Boston Water and Sewer Commission 2025 report
- Source URL
- Open report source
- Source retrieved
- 2026-07-12
- Last reviewed
- 2026-07-12
Use the linked source report for the full table, definitions, footnotes, and official context.
Data coverage
This page summarizes selected public records for this public water system. It may not include every report, update, current notice, or address-level service detail.
- Latest reviewed report
- 2025 report link found
- Report-listed rows
- 2 summarized report entries shown
- Detailed violation records
- No detailed system-scoped records displayed
- Population served
- Listed from reviewed source
- Service connections
- Listed from reviewed source
- City context
- Boston
- County context
- Not listed in current record
Local Context
City and state context for this system
Boston Water and Sewer Commission is linked here to Boston for navigation. That relationship does not confirm the provider for a specific address; use a bill, utility portal, or official lookup source.
Linked local context
- Linked communities
- Boston
- County context
- Not listed in current record
- State context
- Massachusetts
Browse related context
County context is shown as a field when it appears in the current record. County pages are not currently available on this site.
Corrections
Suggest a correction or newer source
If you have a newer official report, utility source, or correction, send the source link for review. This helps keep profile summaries tied to public records.
Suggest an updateEvidence
Official sources and report links
Use official federal, state, utility, or report sources before treating a page as final.
Utility website
Data methodology
Review source hierarchy, missing-data handling, and record limitations.
View Data methodologyData limitations
See why limited records, missing fields, and current notices need careful interpretation.
View Data limitations