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Community Water System · PWS MA1137000

Holyoke Water Works

Holyoke, Massachusetts 01040 - drinking water served from surface water sources to 40,124 people, tracked in EPA SDWIS and UCMR5.

40,124
People served
76
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 76 drinking-water violations at Holyoke Water Works - above the Massachusetts per-system average.

76
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
40,124
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Holyoke Water Works

Holyoke Water Works is a local-owned community water system that delivers drinking water to 40,124 residents in Holyoke, Massachusetts (Hampden County) through 8,181 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 76 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 60 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Pentachlorophenol, recorded in 2 violations (MR). 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%).

Holyoke Water Works's 76 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
40,124
Total Violations
76
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
8,181
County
Hampden
School/Daycare
No
MCL Violations
0
Monitoring Violations
60
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Pentachlorophenol MR 2 2018
Toxaphene MR 2 2018
2,4,5-TP MR 2 2018
Methoxychlor MR 2 2018
Total Polychlorinated Biphenyls (PCB) MR 2 2018
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2018
Benzo(a)pyrene MR 2 2018
Di(2-ethylhexyl) phthalate MR 2 2018
Diquat MR 2 2018
Endothall MR 2 2018
Glyphosate MR 2 2018
HEXACHLOROBENZENE MR 2 2018
Hexachlorocyclopentadiene MR 2 2018
2,3,7,8-TCDD MR 2 2018
Carbofuran MR 2 2018
Endrin MR 2 2018
Dalapon MR 2 2018
Di(2-ethylhexyl) adipate MR 2 2018
ETHYLENE DIBROMIDE MR 2 2018
2,4-D MR 2 2018
Atrazine MR 2 2018
Heptachlor epoxide MR 2 2018
LASSO MR 2 2018
OXAMYL MR 2 2018
BHC-GAMMA MR 2 2018
Dinoseb MR 2 2018
Chlordane MR 2 2018
Heptachlor MR 2 2018
Simazine MR 2 2018
Picloram MR 2 2018

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 207 samples detected PFAS.

Contaminant Date Result MRL Status
HFPO-DA 9/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFPeA 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/9/2024 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 9/9/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 9/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFBS 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 9/9/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 9/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 9/9/2024 <7.00 ppt 7.00 ppt Not Detected
PFTA 9/9/2024 <8.00 ppt 8.00 ppt Not Detected
6:2 FTS 9/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFDoA 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/9/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 9/9/2024 <20.00 ppt 20.00 ppt Not Detected
ADONA 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/9/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/9/2024 <2.00 ppt 2.00 ppt Not Detected
PFMBA 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFNA 9/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFHxS 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 9/24/2024 <7.00 ppt 7.00 ppt Not Detected
PFMPA 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/24/2024 <20.00 ppt 20.00 ppt Not Detected
PFPeS 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFTA 9/24/2024 <8.00 ppt 8.00 ppt Not Detected
NEtFOSAA 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 9/24/2024 <6.00 ppt 6.00 ppt Not Detected
8:2 FTS 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFDoA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/24/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFHxA 9/24/2024 <3.00 ppt 3.00 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 Holyoke Water Works.

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 MA1137000 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 Holyoke Water Works 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
2018 Pentachlorophenol MR 2 SDWIS / MA1137000 / 2326
2018 Toxaphene MR 2 SDWIS / MA1137000 / 2020
2018 2,4,5-TP MR 2 SDWIS / MA1137000 / 2110
2018 Methoxychlor MR 2 SDWIS / MA1137000 / 2015
2018 Total Polychlorinated Biphenyls (PCB) MR 2 SDWIS / MA1137000 / 2383
2018 1,2-DIBROMO-3-CHLOROPROPANE MR 2 SDWIS / MA1137000 / 2931
2018 Benzo(a)pyrene MR 2 SDWIS / MA1137000 / 2306
2018 Di(2-ethylhexyl) phthalate MR 2 SDWIS / MA1137000 / 2039
2018 Diquat MR 2 SDWIS / MA1137000 / 2032
2018 Endothall MR 2 SDWIS / MA1137000 / 2033
2018 Glyphosate MR 2 SDWIS / MA1137000 / 2034
2018 HEXACHLOROBENZENE MR 2 SDWIS / MA1137000 / 2274
2018 Hexachlorocyclopentadiene MR 2 SDWIS / MA1137000 / 2042
2018 2,3,7,8-TCDD MR 2 SDWIS / MA1137000 / 2063
2018 Carbofuran MR 2 SDWIS / MA1137000 / 2046

How Holyoke Water Works Compares

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

Metric Holyoke Water Works Massachusetts avg Federal benchmark
Total violations 76 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 40,124 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 Holyoke Water Works water safe to drink?
Holyoke Water Works (PWS ID: MA1137000) has 76 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 40,124 people using Surface Water sources.
How many people does Holyoke Water Works serve?
Holyoke Water Works serves 40,124 people in Holyoke, Massachusetts. It is a Local-owned system using Surface Water water sources with 8,181 service connections.
What type of violations does Holyoke Water Works have?
Holyoke Water Works has 76 total violations: 0 health-based violations (MCL exceedances or treatment failures), 60 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Holyoke Water Works water?
No. Holyoke Water Works was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Holyoke Water Works use?
Holyoke Water Works 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.
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.