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Community Water System · PWS MA2151000

Leicester Water Supply District

Leicester, Massachusetts 01524 - drinking water served from surface water sources to 3,200 people, tracked in EPA SDWIS and UCMR5.

3,200
People served
184
EPA violations
61
Health-based
Untested
UCMR5 result

The verdict

EPA records 184 drinking-water violations at Leicester Water Supply District, 33% of them health-based - above the Massachusetts per-system average.

184
Total EPA violations on record
33%
Health-based (MCL / treatment failure)
3,200
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Leicester Water Supply District

Leicester Water Supply District is a local-owned community water system that delivers drinking water to 3,200 residents in Leicester, Massachusetts (Worcester County) through 707 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 184 total violations for this system , of which 61 (33%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 98 monitoring and reporting violations are on file. The most recent violation on record dates to 2014.

The most frequently cited contaminant at this system is Arsenic, recorded in 34 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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%).

Leicester Water Supply District's 184 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
3,200
Total Violations
184
Health-Based Violations
61
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
707
County
Worcester
School/Daycare
No
MCL Violations
49
Monitoring Violations
98
Treatment Tech Violations
12

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 34 2010
Coliform (TCR) MR 14 2011
Coliform (TCR) MCL 12 2012
Surface Water Treatment Rule TT 12 2008
Surface Water Treatment Rule MR 12 2007
Consumer Confidence Rule Other 4 2012
Nitrate MR 4 2013
Lead and Copper Rule MR 4 2014
Arsenic MR 4 2011
Combined Uranium MCL 3 2003
Benzene MR 2 2011
Carbon tetrachloride MR 2 2011
Trichloroethylene MR 2 2011
Vinyl chloride MR 2 2011
trans-1,2-Dichloroethylene MR 2 2011
cis-1,2-Dichloroethylene MR 2 2011
1,2-Dichloropropane MR 2 2011
Ethylbenzene MR 2 2011
Tetrachloroethylene MR 2 2011
Toluene MR 2 2011
p-Dichlorobenzene MR 2 2011
Xylenes, Total MR 2 2011
1,1,2-Trichloroethane MR 2 2011
1,2,4-Trichlorobenzene MR 2 2011
Combined Uranium MR 2 2011
Total Haloacetic Acids (HAA5) MR 2 2014
Radium-228 MR 2 1995
Gross Beta Particle Activity MR 2 1995
Tritium MR 2 1995
Styrene MR 2 2011

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 Leicester Water Supply District.

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 MA2151000 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 Leicester Water Supply District 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
2014 Lead and Copper Rule MR 4 SDWIS / MA2151000 / 5000
2014 Total Haloacetic Acids (HAA5) MR 2 SDWIS / MA2151000 / 2456
2014 TTHM MR 2 SDWIS / MA2151000 / 2950
2013 Nitrate MR 4 SDWIS / MA2151000 / 1040
2012 Coliform (TCR) MCL 12 SDWIS / MA2151000 / 3100
2012 Consumer Confidence Rule Other 4 SDWIS / MA2151000 / 7000
2012 Chlorine MR 2 SDWIS / MA2151000 / 0999
2011 Coliform (TCR) MR 14 SDWIS / MA2151000 / 3100
2011 Arsenic MR 4 SDWIS / MA2151000 / 1005
2011 Benzene MR 2 SDWIS / MA2151000 / 2990
2011 Carbon tetrachloride MR 2 SDWIS / MA2151000 / 2982
2011 Trichloroethylene MR 2 SDWIS / MA2151000 / 2984
2011 Vinyl chloride MR 2 SDWIS / MA2151000 / 2976
2011 trans-1,2-Dichloroethylene MR 2 SDWIS / MA2151000 / 2979
2011 cis-1,2-Dichloroethylene MR 2 SDWIS / MA2151000 / 2380

How Leicester Water Supply District Compares

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

Metric Leicester Water Supply District Massachusetts avg Federal benchmark
Total violations 184 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 61 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 3,200 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 Leicester Water Supply District water safe to drink? ▼
Leicester Water Supply District (PWS ID: MA2151000) has 184 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,200 people using Surface Water sources.
How many people does Leicester Water Supply District serve? ▼
Leicester Water Supply District serves 3,200 people in Leicester, Massachusetts. It is a Local-owned system using Surface Water water sources with 707 service connections.
What type of violations does Leicester Water Supply District have? ▼
Leicester Water Supply District has 184 total violations: 61 health-based violations (MCL exceedances or treatment failures), 98 monitoring/reporting violations, and 12 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Leicester Water Supply District water? ▼
No PFAS testing data is available for Leicester Water Supply District under the EPA's UCMR5 monitoring program.
What water source does Leicester Water Supply District use? ▼
Leicester Water Supply District 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. 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.