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Non-Transient Non-Community Water System · PWS MA2179004

Miscoe Hill Middle School

Mendon, Massachusetts 01756 - drinking water served from groundwater sources to 760 people, tracked in EPA SDWIS and UCMR5.

760
People served
149
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 149 drinking-water violations at Miscoe Hill Middle School, 3% of them health-based - above the Massachusetts per-system average.

149
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
760
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Miscoe Hill Middle School

Miscoe Hill Middle School is a local-owned non-transient non-community water system that delivers drinking water to 760 residents in Mendon, Massachusetts (Worcester County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 149 total violations for this system , of which 4 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 137 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 12 violations (MR). 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%).

Miscoe Hill Middle School's 149 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
760
Total Violations
149
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Worcester
School/Daycare
Yes
MCL Violations
4
Monitoring Violations
137
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 12 2014
Lead and Copper Rule MR 10 2020
Coliform (TCR) MCL 4 2007
Arsenic MR 3 2012
Mercury MR 3 2012
Selenium MR 3 2012
Chromium MR 3 2012
Antimony, Total MR 3 2012
Beryllium, Total MR 3 2012
CYANIDE MR 3 2012
Barium MR 3 2012
Cadmium MR 3 2012
Thallium, Total MR 3 2012
Nickel MR 3 2012
Fluoride MR 3 2012
Nitrate MR 3 1996
cis-1,2-Dichloroethylene MR 2 1996
Xylenes, Total MR 2 1996
o-Dichlorobenzene MR 2 1996
p-Dichlorobenzene MR 2 1996
Vinyl chloride MR 2 1996
1,1,1-Trichloroethane MR 2 1996
1,2-Dichloropropane MR 2 1996
Trichloroethylene MR 2 1996
1,1,2-Trichloroethane MR 2 1996
Tetrachloroethylene MR 2 1996
CHLOROBENZENE MR 2 1996
Ethylbenzene MR 2 1996
Benzene MR 2 1996
1,2-Dichloroethane MR 2 1996

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 Miscoe Hill Middle School.

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 MA2179004 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 Miscoe Hill Middle School 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
2020 Lead and Copper Rule MR 10 SDWIS / MA2179004 / 5000
2014 Coliform (TCR) MR 12 SDWIS / MA2179004 / 3100
2012 Arsenic MR 3 SDWIS / MA2179004 / 1005
2012 Mercury MR 3 SDWIS / MA2179004 / 1035
2012 Selenium MR 3 SDWIS / MA2179004 / 1045
2012 Chromium MR 3 SDWIS / MA2179004 / 1020
2012 Antimony, Total MR 3 SDWIS / MA2179004 / 1074
2012 Beryllium, Total MR 3 SDWIS / MA2179004 / 1075
2012 CYANIDE MR 3 SDWIS / MA2179004 / 1024
2012 Barium MR 3 SDWIS / MA2179004 / 1010
2012 Cadmium MR 3 SDWIS / MA2179004 / 1015
2012 Thallium, Total MR 3 SDWIS / MA2179004 / 1085
2012 Nickel MR 3 SDWIS / MA2179004 / 1036
2012 Fluoride MR 3 SDWIS / MA2179004 / 1025
2007 Coliform (TCR) MCL 4 SDWIS / MA2179004 / 3100

How Miscoe Hill Middle School Compares

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

Metric Miscoe Hill Middle School Massachusetts avg Federal benchmark
Total violations 149 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 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 760 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 Miscoe Hill Middle School water safe to drink? ▼
Miscoe Hill Middle School (PWS ID: MA2179004) has 149 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 760 people using Groundwater sources.
How many people does Miscoe Hill Middle School serve? ▼
Miscoe Hill Middle School serves 760 people in Mendon, Massachusetts. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Miscoe Hill Middle School have? ▼
Miscoe Hill Middle School has 149 total violations: 4 health-based violations (MCL exceedances or treatment failures), 137 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Miscoe Hill Middle School water? ▼
No PFAS testing data is available for Miscoe Hill Middle School under the EPA's UCMR5 monitoring program.
What water source does Miscoe Hill Middle School use? ▼
Miscoe Hill Middle School uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.