Compiled from MSRB EMMA & public records · read-only public record · debt as of Sep 15, 2026 · latest trade Sep 10, 2026 · latest filing Sep 2, 2026
Credit ratings
not compiledNo agency ratings have been compiled for this issuer from EMMA’s per-security feed. This is a coverage gap, not a statement that the issuer is unrated — ratings may be stated on the official statements or the rating agencies’ own sites.
Maturity profile
par maturing by year · as of Sep 2026Recent activity
rating actions & filingsInformation Provided to Rating Agency, Credit / Liquidity Provider or Other Third Party…
Sep 2, 2026 · Information Provided to Rating Agency, Credit / Liquidity Provi…
Audited Financial Statements or ACFR filed
Jul 2, 2026 · Audited Financial Statements or ACFR: BWSC Financial Statement …
Official statement posted
Sep 19, 2025 · GENERAL REVENUE BONDS (SENIOR SERIES) 2025 SERIES A
Annual Financial Information and Operating Data filed
Sep 19, 2025 · Annual Financial Information and Operating Data: Boston Water a…
Official statement posted
Sep 11, 2025 · GENERAL REVENUE BONDS (SENIOR SERIES) 2025 SERIES A
Audited Financial Statements or ACFR filed
Aug 5, 2025 · Audited Financial Statements or ACFR: Boston Water and Sewer 20…
Debt overview
EMMA-derivedOutstanding par (EMMA est.)—
Securities168
Callable35%
Outstanding securities
168Market activity
EMMA · secondary trades · latest Sep 10, 2026Each dot is a reported secondary trade — yield by trade date, sized by par, colored by trade side. Hover for detail.
Trade dateSecurityPriceYieldSizeSide
Sep 10
101029SK3
99.90
4.09%
25,000
Customer Bought
Sep 10
101029SK3
99.90
4.09%
25,000
Customer Bought
Sep 10
101029SK3
99.80
4.18%
50,000
Inter-Dealer Trade
Sep 10
101029SK3
99.90
4.09%
50,000
Inter-Dealer Trade
Sep 9
101029SK3
99.68
4.29%
50,000
Customer Sold
Sep 9
101029SK3
99.73
4.25%
50,000
Inter-Dealer Trade
Sep 4
101029VY9
100.30
2.94%
60,000
Customer Bought
Trade prints reported to the MSRB — a live market signal a manual issuer page cannot show.
20 callable securities carry a stated call price — refunding candidates as rates move.
Document library
31 documents · sourced from EMMA & the issuer
B
Other
Information Provided to Rating Agency, Credit / Liquidity Provider or Other Third Party: …
Other FilingsSep 2026
OtherEMMA · disclosure
B
Financial
BWSC Financial Statement 12-31-2025
Financial ReportsJul 2026
FinancialEMMA · disclosure
B
OS
GENERAL REVENUE BONDS (SENIOR SERIES) 2025 SERIES A
Official StatementsSep 2025
OSEMMA · official statement
B
Annual Data
Boston Water and Sewer Commission - CD25 FY24
Annual / Operating DataSep 2025
Annual DataEMMA · disclosure
B
OS
GENERAL REVENUE BONDS (SENIOR SERIES) 2025 SERIES A
Official StatementsSep 2025
OSEMMA · official statement
B
Financial
Boston Water and Sewer 2024
Financial ReportsAug 2025
FinancialEMMA · disclosure
B
Annual Data
Boston Water & Sewer Commission - CD24 FY23
Annual / Operating DataSep 2024
Annual DataEMMA · disclosure
B
Financial
FY23 Audit - Boston Water & Sewer Commission
Financial ReportsAug 2024
FinancialEMMA · disclosure
B
OS
MASSACHUSETTS GENERAL REVENUE BONDS (SENIOR SERIES), 2024 SERIES A
Official StatementsMar 2024
OSEMMA · official statement
B
OS
MASSACHUSETTS GENERAL REVENUE BONDS (SENIOR SERIES), 2024 SERIES A
Official StatementsMar 2024
OSEMMA · official statement
B
Annual Data
2023 Continuing Disclosure
Annual / Operating DataSep 2023
Annual DataEMMA · disclosure
B
Financial
BWSC Year End 2022 Audit
Financial ReportsSep 2023
FinancialEMMA · disclosure
B
Annual Data
BWSC 2022 Continuing Disclosure
Annual / Operating DataSep 2022
Annual DataEMMA · disclosure
B
Financial
BWSC Year End 2021 Audit
Financial ReportsAug 2022
FinancialEMMA · disclosure
B
Annual Data
BWSC Continuing Disclosure Filing 2021
Annual / Operating DataSep 2021
Annual DataEMMA · disclosure
B
Financial
BWSC Year End 2020 Audit
Financial ReportsSep 2021
FinancialEMMA · disclosure
B
OS
GENERAL REVENUE AND REFUNDING BONDS, (SENIOR SERIES) 2021 SERIES A (GREEN BONDS) (FEDERAL…
Official StatementsJun 2021
OSEMMA · official statement
B
Annual Data
BWSC CD2020 for Year Ended 2019
Annual / Operating DataSep 2020
Annual DataEMMA · disclosure
B
Financial
2019 Audit BWSC
Financial ReportsAug 2020
FinancialEMMA · disclosure
B
OS
GENERAL REVENUE BONDS (SENIOR SERIES), 2018 SERIES A
Official StatementsMay 2018
OSEMMA · official statement
B
OS
GENERAL REVENUE AND REFUNDING BONDS (SENIOR SERIES) 2016 SERIES B
Official StatementsSep 2016
OSEMMA · official statement
B
OS
GENERAL REVENUE AND REFUNDING BONDS (SENIOR SERIES) 2015 SERIES A
Official StatementsAug 2015
OSEMMA · official statement
B
OS
GENERAL REVENUE AND REFUNDING BONDS (SENIOR SERIES) 2015 SERIES A
Official StatementsJul 2015
OSEMMA · official statement
B
OS
MASSACHUSETTS GENERAL REVENUE BONDS (SENIOR SERIES) 2014 SERIES A
Official StatementsJul 2014
OSEMMA · official statement
B
OS
GENERAL REVENUE REFUNDING BONDS (SENIOR SERIES) 2012 SERIES A
Official StatementsMay 2012
OSEMMA · official statement
B
OS
GENERAL REVENUE AND REFUNDING BONDS, SENIOR SERIES, 2010 SERIES A
Official StatementsJan 2010
OSEMMA · official statement
B
OS
GEN REV REF BDS 2009A
Official StatementsMar 2009
OSEMMA · official statement
B
OS
GEN REV BDS 2004A
Official StatementsAug 2004
OSEMMA · official statement
B
OS
RFDG-SER A
Official StatementsSep 2003
OSEMMA · official statement
B
OS
RFDG-SER A
Official StatementsSep 2002
OSEMMA · official statement
B
OS
REV BDS SENIOR SERIES 1998 D
Official StatementsJan 1999
OSEMMA · official statement
Annual / Operating Data
Boston Water and Sewer Commission - CD25 FY24
Boston Water & Sewer Commission - CD24 FY23
2023 Continuing Disclosure
BWSC 2022 Continuing Disclosure
BWSC Continuing Disclosure Filing 2021
BWSC CD2020 for Year Ended 2019
Financial Reports
BWSC Financial Statement 12-31-2025
Boston Water and Sewer 2024
FY23 Audit - Boston Water & Sewer Commission
BWSC Year End 2022 Audit
BWSC Year End 2021 Audit
BWSC Year End 2020 Audit
2019 Audit BWSC
Official Statements
GENERAL REVENUE BONDS (SENIOR SERIES) 2025 SERIES A
GENERAL REVENUE BONDS (SENIOR SERIES) 2025 SERIES A
MASSACHUSETTS GENERAL REVENUE BONDS (SENIOR SERIES), 2024 SERIES A
MASSACHUSETTS GENERAL REVENUE BONDS (SENIOR SERIES), 2024 SERIES A
GENERAL REVENUE AND REFUNDING BONDS, (SENIOR SERIES) 2021 SERIES A (GREEN BONDS) (FEDERALLY TAXABLE)
GENERAL REVENUE BONDS (SENIOR SERIES), 2018 SERIES A
GENERAL REVENUE AND REFUNDING BONDS (SENIOR SERIES) 2016 SERIES B
GENERAL REVENUE AND REFUNDING BONDS (SENIOR SERIES) 2015 SERIES A
GENERAL REVENUE AND REFUNDING BONDS (SENIOR SERIES) 2015 SERIES A
MASSACHUSETTS GENERAL REVENUE BONDS (SENIOR SERIES) 2014 SERIES A
GENERAL REVENUE REFUNDING BONDS (SENIOR SERIES) 2012 SERIES A
GENERAL REVENUE AND REFUNDING BONDS, SENIOR SERIES, 2010 SERIES A
GEN REV REF BDS 2009A
GEN REV BDS 2004A
RFDG-SER A
RFDG-SER A
REV BDS SENIOR SERIES 1998 D
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Disclosure record
2 years of annual filings on EMMA14 continuing-disclosure filings compiled
Latest filing within the past year · Sep 2026
Public documents
31Public contact
ListedAnnual financial filings posted to the MSRB’s EMMA, newest first — a reporting-cadence signal. Click a year to open the filing.
14 continuing-disclosure filings compiled
Latest filing within the past year · latest posting 2026-09-02
✓ Issuer website on file
Counts what BondGov has compiled from the MSRB’s EMMA — a coverage fact, not a compliance rating or a days-late claim. Contact routes show as on file only; the address itself is never published here. Verify on EMMA ↗
Standing
as of Sep 15, 2026What the public record shows about this issuer’s disclosure practice. Compiled from the MSRB’s EMMA and from award letters governments record themselves. MuniPro confers no credential and issues no rating.
Credentials on record
Conferred by GFOA, recorded from the award letter. Never inferred.
Certificate of Achievement for Excellence in Financial Reporting
No receipt on file
Distinguished Budget Presentation Award
No receipt on file
Popular Annual Financial Reporting Award
No receipt on file
Nothing recorded here means nothing has been recorded — not that an award was withheld.
Dated obligations
Filings a law or contract puts a date on.
Not measured
MuniPro does not hold this issuer’s own continuing-disclosure undertaking date, so no filing is called late here. Why →
Record quality
Disclosure practice — not an assessment of creditworthiness.
Annual reporting compiled
2 of 3
2 of 3 reporting years (2023–2025) have an annual financial filing compiled from the MSRB’s EMMA. The denominator is MuniPro’s 3-year reading window — it is NOT a filing obligation, and a missing year here means no filing was compiled, not that one was owed and skipped.
Record freshness
Within the past year
The newest continuing-disclosure filing MuniPro has compiled for this issuer was posted 13 days ago. This is the age of the public record — it is not a lateness claim, because MuniPro does not hold the date this issuer’s undertaking sets.
Filing timeliness
Not measured
Timeliness needs the date this issuer’s own continuing-disclosure undertaking sets. MuniPro does not hold it, and will not substitute a generic interval.
Standing describes disclosure practice — not an assessment of creditworthiness. It is not a rating, a rank against other governments, or a MuniPro credential. See the full computation →