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Non-Transient Non-Community Water System · PWS WI2300490

Wilmot Union High School

Wilmot, Wisconsin 53192 - drinking water served from groundwater sources to 1,200 people, tracked in EPA SDWIS and UCMR5.

1,200
People served
1,121
EPA violations
7
Health-based
Untested
UCMR5 result

The verdict

EPA records 1,121 drinking-water violations at Wilmot Union High School, 1% of them health-based - above the Wisconsin per-system average.

1,121
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
1,200
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Wilmot Union High School

Wilmot Union High School is a local-owned non-transient non-community water system that delivers drinking water to 1,200 residents in Wilmot, Wisconsin (Kenosha County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 1,121 total violations for this system , of which 7 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 1,109 monitoring and reporting violations are on file. The most recent violation on record dates to 2013.

The most frequently cited contaminant at this system is Vinyl chloride, recorded in 44 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 Wisconsin, EPA tracks 10,988 public water systems serving 5,131,439 people, with 285,161 cumulative violations and 58,688 health-based violations on record. About 72% of systems in the state carry at least one violation, and state-wide the average per system is 26 violations. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%).

Wilmot Union High School's 1,121 violations sit above the Wisconsin 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
1,200
Total Violations
1,121
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Kenosha
School/Daycare
Yes
MCL Violations
4
Monitoring Violations
1,109
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Vinyl chloride MR 44 2008
1,1-Dichloroethylene MR 44 2008
Ethylbenzene MR 44 2008
Toluene MR 44 2008
Benzene MR 44 2008
CHLOROBENZENE MR 44 2008
Tetrachloroethylene MR 44 2008
1,1,2-Trichloroethane MR 44 2008
Trichloroethylene MR 44 2008
p-Dichlorobenzene MR 44 2008
DICHLOROMETHANE MR 44 2008
Xylenes, Total MR 44 2008
1,2,4-Trichlorobenzene MR 44 2008
Carbon tetrachloride MR 44 2008
1,2-Dichloropropane MR 44 2008
cis-1,2-Dichloroethylene MR 44 2008
Styrene MR 44 2008
o-Dichlorobenzene MR 44 2008
trans-1,2-Dichloroethylene MR 44 2008
1,2-Dichloroethane MR 44 2008
1,1,1-Trichloroethane MR 44 2008
Coliform (TCR) MR 28 2010
Lead and Copper Rule MR 26 2013
Nitrate MR 11 2000
Chromium MR 9 2000
Cadmium MR 9 2000
Thallium, Total MR 9 2000
Nitrate-Nitrite MR 9 2000
Mercury MR 9 2000
Antimony, Total MR 9 2000

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 Wilmot Union High 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 WI2300490 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Wisconsin Drinking Water Authority

Wisconsin DNR, Drinking Water and Groundwater is the primacy agency that licenses and inspects Wilmot Union High School under EPA-delegated authority.

Open WI regulator portal

Source: Wisconsin DNR, Drinking Water and Groundwater

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
2013 Lead and Copper Rule MR 26 SDWIS / WI2300490 / 5000
2011 Public Notice Other 5 SDWIS / WI2300490 / 7500
2010 Coliform (TCR) MR 28 SDWIS / WI2300490 / 3100
2008 Vinyl chloride MR 44 SDWIS / WI2300490 / 2976
2008 1,1-Dichloroethylene MR 44 SDWIS / WI2300490 / 2977
2008 Ethylbenzene MR 44 SDWIS / WI2300490 / 2992
2008 Toluene MR 44 SDWIS / WI2300490 / 2991
2008 Benzene MR 44 SDWIS / WI2300490 / 2990
2008 CHLOROBENZENE MR 44 SDWIS / WI2300490 / 2989
2008 Tetrachloroethylene MR 44 SDWIS / WI2300490 / 2987
2008 1,1,2-Trichloroethane MR 44 SDWIS / WI2300490 / 2985
2008 Trichloroethylene MR 44 SDWIS / WI2300490 / 2984
2008 p-Dichlorobenzene MR 44 SDWIS / WI2300490 / 2969
2008 DICHLOROMETHANE MR 44 SDWIS / WI2300490 / 2964
2008 Xylenes, Total MR 44 SDWIS / WI2300490 / 2955

How Wilmot Union High School Compares

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

Metric Wilmot Union High School Wisconsin avg Federal benchmark
Total violations 1,121 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 7 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,200 467 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,988 regulated public water systems in Wisconsin.

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 Wilmot Union High School water safe to drink? ▼
Wilmot Union High School (PWS ID: WI2300490) has 1121 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,200 people using Groundwater sources.
How many people does Wilmot Union High School serve? ▼
Wilmot Union High School serves 1,200 people in Wilmot, Wisconsin. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Wilmot Union High School have? ▼
Wilmot Union High School has 1,121 total violations: 7 health-based violations (MCL exceedances or treatment failures), 1,109 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Wilmot Union High School water? ▼
No PFAS testing data is available for Wilmot Union High School under the EPA's UCMR5 monitoring program.
What water source does Wilmot Union High School use? ▼
Wilmot Union High 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.