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Community Water System · PWS MA4044000

Brockton Water Department

Brockton, Massachusetts 02301 - drinking water served from surface water sources to 105,643 people, tracked in EPA SDWIS and UCMR5.

105,643
People served
110
EPA violations
10
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 110 drinking-water violations at Brockton Water Department, 9% of them health-based - above the Massachusetts per-system average.

110
Total EPA violations on record
9%
Health-based (MCL / treatment failure)
105,643
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Brockton Water Department

Brockton Water Department is a local-owned community water system that delivers drinking water to 105,643 residents in Brockton, Massachusetts (Plymouth County) through 24,478 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 110 total violations for this system , of which 10 (9%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 54 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is TTHM, recorded in 10 violations (MCL, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Brockton Water Department's 110 violations sit above 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.

Population Served
105,643
Total Violations
110
Health-Based Violations
10
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
24,478
County
Plymouth
School/Daycare
No
MCL Violations
10
Monitoring Violations
54
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 10 2018
Consumer Confidence Rule Other 4 2023
cis-1,2-Dichloroethylene MR 1 1996
Xylenes, Total MR 1 1996
DICHLOROMETHANE MR 1 1996
o-Dichlorobenzene MR 1 1996
Vinyl chloride MR 1 1996
1,1-Dichloroethylene MR 1 1996
1,2-Dichloropropane MR 1 1996
CHLOROBENZENE MR 1 1996
Toluene MR 1 1996
Ethylbenzene MR 1 1996
Total Polychlorinated Biphenyls (PCB) MR 1 1998
BHC-GAMMA MR 1 1998
Aldicarb sulfoxide MR 1 1998
Aldicarb sulfone MR 1 1998
Heptachlor epoxide MR 1 1998
Endothall MR 1 1998
Methoxychlor MR 1 1998
Pentachlorophenol MR 1 1998
Heptachlor MR 1 1998
ETHYLENE DIBROMIDE MR 1 1998
Atrazine MR 1 1998
OXAMYL MR 1 1998
Dalapon MR 1 1998
Trichloroethylene MR 1 1996
Chlordane MR 1 1998
Dinoseb MR 1 1998
Carbon tetrachloride MR 1 1996
Di(2-ethylhexyl) phthalate MR 1 1998

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFPeS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/13/2023 <20.00 ppt 20.00 ppt Not Detected
6:2 FTS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFDA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 9/13/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 9/13/2023 <6.00 ppt 6.00 ppt Not Detected
PFEESA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
PFDoA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 9/13/2023 <8.00 ppt 8.00 ppt Not Detected
PFNA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 6/14/2023 <8.00 ppt 8.00 ppt Not Detected
PFMPA 6/14/2023 <4.00 ppt 4.00 ppt Not Detected
11Cl-PF3OUdS 6/14/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 6/14/2023 <2.00 ppt 2.00 ppt Not Detected
HFPO-DA 6/14/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 6/14/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 6/14/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 6/14/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeA 6/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 6/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 6/14/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 6/14/2023 <20.00 ppt 20.00 ppt Not Detected
PFUnA 6/14/2023 <2.00 ppt 2.00 ppt Not Detected
PFHpS 6/14/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 6/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 6/14/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 6/14/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeS 6/14/2023 <4.00 ppt 4.00 ppt Not Detected
PFBA 6/14/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxA 6/14/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 6/14/2023 <6.00 ppt 6.00 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 Brockton Water Department.

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 MA4044000 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 Brockton Water Department 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
2023 Consumer Confidence Rule Other 4 SDWIS / MA4044000 / 7000
2018 TTHM MCL 10 SDWIS / MA4044000 / 2950
1998 Total Polychlorinated Biphenyls (PCB) MR 1 SDWIS / MA4044000 / 2383
1998 BHC-GAMMA MR 1 SDWIS / MA4044000 / 2010
1998 Aldicarb sulfoxide MR 1 SDWIS / MA4044000 / 2043
1998 Aldicarb sulfone MR 1 SDWIS / MA4044000 / 2044
1998 Heptachlor epoxide MR 1 SDWIS / MA4044000 / 2067
1998 Endothall MR 1 SDWIS / MA4044000 / 2033
1998 Methoxychlor MR 1 SDWIS / MA4044000 / 2015
1998 Pentachlorophenol MR 1 SDWIS / MA4044000 / 2326
1998 Heptachlor MR 1 SDWIS / MA4044000 / 2065
1998 ETHYLENE DIBROMIDE MR 1 SDWIS / MA4044000 / 2946
1998 Atrazine MR 1 SDWIS / MA4044000 / 2050
1998 OXAMYL MR 1 SDWIS / MA4044000 / 2036
1998 Dalapon MR 1 SDWIS / MA4044000 / 2031

How Brockton Water Department Compares

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

Metric Brockton Water Department Massachusetts avg Federal benchmark
Total violations 110 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 10 4.6 Indicates a contaminant exceeded a federal MCL
PFAS detection None 56.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 105,643 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 Brockton Water Department water safe to drink? ▼
Brockton Water Department (PWS ID: MA4044000) has 110 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 105,643 people using Surface Water sources.
How many people does Brockton Water Department serve? ▼
Brockton Water Department serves 105,643 people in Brockton, Massachusetts. It is a Local-owned system using Surface Water water sources with 24,478 service connections.
What type of violations does Brockton Water Department have? ▼
Brockton Water Department has 110 total violations: 10 health-based violations (MCL exceedances or treatment failures), 54 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Brockton Water Department water? ▼
No. Brockton Water Department was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Brockton Water Department use? ▼
Brockton Water Department uses Surface Water 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.

Read our methodology - how this data is sourced, computed, and verified.

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.