PlainWater

Community Water System · PWS MA4167000

Mansfield Water Division

Mansfield, Massachusetts 02048 - drinking water served from groundwater sources to 23,289 people, tracked in EPA SDWIS and UCMR5.

23,289
People served
26
EPA violations
7
Health-based
4 PFAS
UCMR5 result

The verdict

EPA records 26 drinking-water violations at Mansfield Water Division, 27% of them health-based - below the Massachusetts per-system average, and UCMR5 testing detected 4 PFAS compounds.

26
Total EPA violations on record
27%
Health-based (MCL / treatment failure)
23,289
People served by this system
4
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Mansfield Water Division

Mansfield Water Division is a local-owned community water system that delivers drinking water to 23,289 residents in Mansfield, Massachusetts (Bristol County) through 7,090 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 26 total violations for this system , of which 7 (27%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 11 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 7 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 4 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 6.2 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Massachusetts, EPA tracks 1,599 public water systems serving 10,332,845 people, with 73,886 cumulative violations and 7,389 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 46.2 violations. Statewide, 148 of 263 UCMR5-tested systems have reported PFAS detections (56.3%).

Mansfield Water Division's 26 violations sit below the Massachusetts average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

4 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
23,289
Total Violations
26
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
7,090
County
Bristol
School/Daycare
No
MCL Violations
7
Monitoring Violations
11
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 7 2009
Consumer Confidence Rule Other 2 2012
Nitrate MR 2 1996
Selenium MR 1 1990
Chromium MR 1 1990
Cadmium MR 1 1990
Barium MR 1 1990
Mercury MR 1 1990
Nitrite MR 1 1996
Revised Total Coliform Rule MON 1 2022
Fluoride MR 1 1990
Coliform (TCR) Other 1 1999
Arsenic MR 1 1990

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 5 of 174 samples detected PFAS.

Contaminant Date Result MRL Status
NMeFOSAA 9/17/2025 <6.00 ppt 6.00 ppt Not Detected
PFHxA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFTA 9/17/2025 <8.00 ppt 8.00 ppt Not Detected
NEtFOSAA 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 9/17/2025 <7.00 ppt 7.00 ppt Not Detected
PFMBA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFBA 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/17/2025 <2.00 ppt 2.00 ppt Not Detected
PFDA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFUnA 9/17/2025 <2.00 ppt 2.00 ppt Not Detected
PFBS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFNA 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
NFDHA 9/17/2025 <20.00 ppt 20.00 ppt Not Detected
PFEESA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFBS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/17/2025 <2.00 ppt 2.00 ppt Not Detected
8:2 FTS 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFPeA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/17/2025 <20.00 ppt 20.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Mansfield Water Division.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID MA4167000 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Massachusetts Drinking Water Authority

MassDEP, Drinking Water Program is the primacy agency that licenses and inspects Mansfield Water Division under EPA-delegated authority.

Open MA regulator portal

Source: MassDEP, Drinking Water Program

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2022 Revised Total Coliform Rule MON 1 SDWIS / MA4167000 / 8000
2012 Consumer Confidence Rule Other 2 SDWIS / MA4167000 / 7000
2009 Coliform (TCR) MCL 7 SDWIS / MA4167000 / 3100
1999 Coliform (TCR) Other 1 SDWIS / MA4167000 / 3100
1996 Nitrate MR 2 SDWIS / MA4167000 / 1040
1996 Nitrite MR 1 SDWIS / MA4167000 / 1041
1990 Selenium MR 1 SDWIS / MA4167000 / 1045
1990 Chromium MR 1 SDWIS / MA4167000 / 1020
1990 Cadmium MR 1 SDWIS / MA4167000 / 1015
1990 Barium MR 1 SDWIS / MA4167000 / 1010
1990 Mercury MR 1 SDWIS / MA4167000 / 1035
1990 Fluoride MR 1 SDWIS / MA4167000 / 1025
1990 Arsenic MR 1 SDWIS / MA4167000 / 1005

How Mansfield Water Division Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Mansfield Water Division Massachusetts avg Federal benchmark
Total violations 26 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 7 4.6 Indicates a contaminant exceeded a federal MCL
PFAS detection 4 compounds 56.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 23,289 6,462 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,599 regulated public water systems in Massachusetts.

Federal MCL reference, Safe Drinking Water Act thresholds
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Mansfield Water Division water safe to drink?
Mansfield Water Division (PWS ID: MA4167000) has 26 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 4 PFAS compounds found. This system serves 23,289 people using Groundwater sources.
How many people does Mansfield Water Division serve?
Mansfield Water Division serves 23,289 people in Mansfield, Massachusetts. It is a Local-owned system using Groundwater water sources with 7,090 service connections.
What type of violations does Mansfield Water Division have?
Mansfield Water Division has 26 total violations: 7 health-based violations (MCL exceedances or treatment failures), 11 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Mansfield Water Division water?
Yes. UCMR5 testing detected 4 PFAS compounds in Mansfield Water Division's water supply: PFOS, PFHxS, PFOA, PFBS. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Mansfield Water Division use?
Mansfield Water Division uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from?
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.