Stoneham Water Dept (MWRA SUPPLY)

Published drinking-water records and contacts for Stoneham Water Dept (MWRA SUPPLY). System MA3284000. Review sources and dates; not a real-time water assessment.

System ID: MA3284000
State or territory: MA
Published population served: 23244
System type (source code): CWS

Published records and dates

PFAS / lithium (EPA UCMR 5): 120 — 2024-01-24 – 2024-10-21
Lead and copper monitoring summaries: 41 — 1992-01-01 – 2025-12-31

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Read the provider’s annual water quality report

Report link listed: 2026-10-09. This is not the report’s sampling date.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
Substance	Published result	Reporting limit	Sample date	Sampling location
11Cl-PF3OUdS	< 0.005 µg/L	0.005 µg/L	2024-10-21	MWRA Connection / EP001
4:2 FTS	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
6:2 FTS	< 0.005 µg/L	0.005 µg/L	2024-10-21	MWRA Connection / EP001
8:2 FTS	< 0.005 µg/L	0.005 µg/L	2024-10-21	MWRA Connection / EP001
9Cl-PF3ONS	< 0.002 µg/L	0.002 µg/L	2024-10-21	MWRA Connection / EP001
ADONA	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
HFPO-DA	< 0.005 µg/L	0.005 µg/L	2024-10-21	MWRA Connection / EP001
NEtFOSAA	< 0.005 µg/L	0.005 µg/L	2024-10-21	MWRA Connection / EP001
NFDHA	< 0.02 µg/L	0.02 µg/L	2024-10-21	MWRA Connection / EP001
NMeFOSAA	< 0.006 µg/L	0.006 µg/L	2024-10-21	MWRA Connection / EP001
PFBA	< 0.005 µg/L	0.005 µg/L	2024-10-21	MWRA Connection / EP001
PFBS	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFDA	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFDoA	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFEESA	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFHpA	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFHpS	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFHxA	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFHxS	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFMBA	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFMPA	< 0.004 µg/L	0.004 µg/L	2024-10-21	MWRA Connection / EP001
PFNA	< 0.004 µg/L	0.004 µg/L	2024-10-21	MWRA Connection / EP001
PFOA	< 0.004 µg/L	0.004 µg/L	2024-10-21	MWRA Connection / EP001
PFOS	< 0.004 µg/L	0.004 µg/L	2024-10-21	MWRA Connection / EP001
PFPeA	< 0.003 µg/L	0.003 µg/L	2024-10-21	MWRA Connection / EP001
PFPeS	< 0.004 µg/L	0.004 µg/L	2024-10-21	MWRA Connection / EP001
PFTA	< 0.008 µg/L	0.008 µg/L	2024-10-21	MWRA Connection / EP001
PFTrDA	< 0.007 µg/L	0.007 µg/L	2024-10-21	MWRA Connection / EP001
PFUnA	< 0.002 µg/L	0.002 µg/L	2024-10-21	MWRA Connection / EP001
lithium	< 9 µg/L	9 µg/L	2024-10-21	MWRA Connection / EP001

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
Substance	Published 90th percentile	Monitoring period	Source quarter
Lead (PB90)	0.00144 mg/L	2025-01-01 – 2025-12-31	2026Q3
Lead (PB90)	0.00209 mg/L	2024-01-01 – 2024-12-31	2026Q3
Lead (PB90)	0.00869 mg/L	2023-01-01 – 2023-12-31	2026Q3
Lead (PB90)	0.0061 mg/L	2022-01-01 – 2022-12-31	2026Q3
Lead (PB90)	0.00517 mg/L	2021-01-01 – 2021-12-31	2026Q3
Lead (PB90)	0.00612 mg/L	2020-01-01 – 2020-12-31	2026Q3
Lead (PB90)	0.00506 mg/L	2019-01-01 – 2019-12-31	2026Q3
Lead (PB90)	0.0052 mg/L	2018-01-01 – 2018-12-31	2026Q3

Published compliance history

10 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / record	Period	Recorded status	Health-based (EPA classification)	Source quarter
Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR)	2018-09-01 – 2018-09-30	Archived	Yes	2026Q3
Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR)	1998-03-01 – 1998-03-31	Archived	Yes	2026Q3
Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR)	1997-08-01 – 1997-08-31	Archived	Yes	2026Q3
Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR)	1997-07-01 – 1997-07-31	Archived	Yes	2026Q3
Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR)	1997-06-01 – 1997-06-30	Archived	Yes	2026Q3
Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR)	1996-09-01 – 1996-09-30	Archived	Yes	2026Q3
Total Coliform Rule / Maximum Contaminant Level Violation, Acute (TCR)	1996-08-01 – 1996-08-31	Archived	Yes	2026Q3
Total Coliform Rule / Monitoring, Routine Minor (TCR)	1995-12-01 – 1995-12-31	Archived	No	2026Q3
Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR)	1995-09-01 – 1995-09-30	Archived	Yes	2026Q3
Surface Water Treatment Rule / Failure to Filter (SWTR)	1992-01-01 – 2000-05-05	Archived	Yes	2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17

Administrative contact (EPA filing)

Stoneham Water Dept (MWRA SUPPLY): 7814380760

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records