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Community Water System · PWS MA2080000

Dudley Water Department

Dudley, Massachusetts 01571 - drinking water served from groundwater sources to 5,515 people, tracked in EPA SDWIS and UCMR5.

5,515
People served
306
EPA violations
30
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 306 drinking-water violations at Dudley Water Department, 10% of them health-based - above the Massachusetts per-system average.

306
Total EPA violations on record
10%
Health-based (MCL / treatment failure)
5,515
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Dudley Water Department

Dudley Water Department is a local-owned community water system that delivers drinking water to 5,515 residents in Dudley, Massachusetts (Worcester County) through 2,376 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 306 total violations for this system , of which 30 (10%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 252 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 Coliform (TCR), recorded in 24 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%).

Dudley Water Department's 306 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
5,515
Total Violations
306
Health-Based Violations
30
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
2,376
County
Worcester
School/Daycare
No
MCL Violations
24
Monitoring Violations
252
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 24 2013
Endrin MR 6 1997
BHC-GAMMA MR 6 1997
Methoxychlor MR 6 1997
Toxaphene MR 6 1997
Dalapon MR 6 1997
Diquat MR 6 1997
Endothall MR 6 1997
Glyphosate MR 6 1997
Di(2-ethylhexyl) adipate MR 6 1997
OXAMYL MR 6 1997
Di(2-ethylhexyl) phthalate MR 6 1997
Picloram MR 6 1997
Dinoseb MR 6 1997
Aldicarb sulfoxide MR 6 1997
Aldicarb sulfone MR 6 1997
Carbofuran MR 6 1997
Aldicarb MR 6 1997
Atrazine MR 6 1997
LASSO MR 6 1997
2,3,7,8-TCDD MR 6 1997
Heptachlor MR 6 1997
2,4-D MR 6 1997
2,4,5-TP MR 6 1997
HEXACHLOROBENZENE MR 6 1997
Benzo(a)pyrene MR 6 1997
Pentachlorophenol MR 6 1997
Total Polychlorinated Biphenyls (PCB) MR 6 1997
1,2-DIBROMO-3-CHLOROPROPANE MR 6 1997
ETHYLENE DIBROMIDE MR 6 1997

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
PFUnA 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
PFHpS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 7/12/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 7/12/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 7/12/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 7/12/2023 <8.00 ppt 8.00 ppt Not Detected
9Cl-PF3ONS 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
4:2 FTS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 1/18/2023 <2.00 ppt 2.00 ppt Not Detected
NEtFOSAA 1/18/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 1/18/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 1/18/2023 <8.00 ppt 8.00 ppt Not Detected
PFBS 1/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 1/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 1/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 1/18/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 1/18/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 1/18/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 1/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 1/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 1/18/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 1/18/2023 <6.00 ppt 6.00 ppt Not Detected
11Cl-PF3OUdS 1/18/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 1/18/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 1/18/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 1/18/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 1/18/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 1/18/2023 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 1/18/2023 <5.00 ppt 5.00 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 Dudley 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 MA2080000 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 Dudley 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 Arsenic MR 2 SDWIS / MA2080000 / 1005
2023 Lead and Copper Rule MR 2 SDWIS / MA2080000 / 5000
2018 TTHM MR 2 SDWIS / MA2080000 / 2950
2018 Total Haloacetic Acids (HAA5) MR 2 SDWIS / MA2080000 / 2456
2013 Coliform (TCR) MCL 24 SDWIS / MA2080000 / 3100
2004 Coliform (TCR) MR 4 SDWIS / MA2080000 / 3100
1998 1,2,4-Trichlorobenzene MR 2 SDWIS / MA2080000 / 2378
1998 cis-1,2-Dichloroethylene MR 2 SDWIS / MA2080000 / 2380
1998 Xylenes, Total MR 2 SDWIS / MA2080000 / 2955
1998 DICHLOROMETHANE MR 2 SDWIS / MA2080000 / 2964
1998 p-Dichlorobenzene MR 2 SDWIS / MA2080000 / 2969
1998 1,1-Dichloroethylene MR 2 SDWIS / MA2080000 / 2977
1998 trans-1,2-Dichloroethylene MR 2 SDWIS / MA2080000 / 2979
1998 1,2-Dichloroethane MR 2 SDWIS / MA2080000 / 2980
1998 1,1,1-Trichloroethane MR 2 SDWIS / MA2080000 / 2981

How Dudley Water Department Compares

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

Metric Dudley Water Department Massachusetts avg Federal benchmark
Total violations 306 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 30 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 5,515 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 Dudley Water Department water safe to drink? ▼
Dudley Water Department (PWS ID: MA2080000) has 306 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 5,515 people using Groundwater sources.
How many people does Dudley Water Department serve? ▼
Dudley Water Department serves 5,515 people in Dudley, Massachusetts. It is a Local-owned system using Groundwater water sources with 2,376 service connections.
What type of violations does Dudley Water Department have? ▼
Dudley Water Department has 306 total violations: 30 health-based violations (MCL exceedances or treatment failures), 252 monitoring/reporting violations, and 6 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Dudley Water Department water? ▼
No. Dudley Water Department was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Dudley Water Department use? ▼
Dudley Water Department 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.

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.