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MCDONALDS VERNON

PWS ID: WI2682450 · WAUKESHA, Wisconsin 53189

MCDONALDS VERNON serves 1,250 people in WAUKESHA, Wisconsin using Groundwater water sources. It has 118 recorded EPA violations, including 29 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MCDONALDS VERNON

MCDONALDS VERNON is a private-owned non-transient non-community water system that delivers drinking water to 1,250 residents in WAUKESHA, Wisconsin (Waukesha County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 118 total violations for this system , of which 29 (25%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 85 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 29 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 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. MCDONALDS VERNON's 118 violations sit above the Wisconsin average. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%). 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
1,250
Total Violations
118
Health-Based Violations
29
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Waukesha
School/Daycare
No
MCL Violations
29
Monitoring Violations
85
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 29 2014
Coliform (TCR) MR 16 2013
Lead and Copper Rule MR 12 1995
Revised Total Coliform Rule MON 8 2019
Nitrate MR 5 2003
Public Notice Other 4 2011
Toluene MR 2 1995
Carbon tetrachloride MR 2 1995
1,1-Dichloroethylene MR 2 1995
o-Dichlorobenzene MR 2 1995
DICHLOROMETHANE MR 2 1995
CHLOROBENZENE MR 2 1995
Tetrachloroethylene MR 2 1995
1,1,2-Trichloroethane MR 2 1995
1,1,1-Trichloroethane MR 2 1995
1,2,4-Trichlorobenzene MR 2 1995
Benzene MR 2 1995
1,2-Dichloropropane MR 2 1995
trans-1,2-Dichloroethylene MR 2 1995
Xylenes, Total MR 2 1995
Ethylbenzene MR 2 1995
Glyphosate MR 2 2001
Styrene MR 2 1995
Trichloroethylene MR 2 1995
p-Dichlorobenzene MR 2 1995
Vinyl chloride MR 2 1995
cis-1,2-Dichloroethylene MR 2 1995
1,2-Dichloroethane MR 2 1995

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 MCDONALDS VERNON.

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 WI2682450 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 MCDONALDS VERNON 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
2019 Revised Total Coliform Rule MON 8 SDWIS / WI2682450 / 8000
2014 Coliform (TCR) MCL 29 SDWIS / WI2682450 / 3100
2013 Coliform (TCR) MR 16 SDWIS / WI2682450 / 3100
2011 Public Notice Other 4 SDWIS / WI2682450 / 7500
2003 Nitrate MR 5 SDWIS / WI2682450 / 1040
2001 Glyphosate MR 2 SDWIS / WI2682450 / 2034
1995 Lead and Copper Rule MR 12 SDWIS / WI2682450 / 5000
1995 Toluene MR 2 SDWIS / WI2682450 / 2991
1995 Carbon tetrachloride MR 2 SDWIS / WI2682450 / 2982
1995 1,1-Dichloroethylene MR 2 SDWIS / WI2682450 / 2977
1995 o-Dichlorobenzene MR 2 SDWIS / WI2682450 / 2968
1995 DICHLOROMETHANE MR 2 SDWIS / WI2682450 / 2964
1995 CHLOROBENZENE MR 2 SDWIS / WI2682450 / 2989
1995 Tetrachloroethylene MR 2 SDWIS / WI2682450 / 2987
1995 1,1,2-Trichloroethane MR 2 SDWIS / WI2682450 / 2985

How MCDONALDS VERNON Compares

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

Metric MCDONALDS VERNON Wisconsin avg Federal benchmark
Total violations 118 26 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 29 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 1,250 467 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is MCDONALDS VERNON water safe to drink? ▼
MCDONALDS VERNON (PWS ID: WI2682450) has 118 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,250 people using Groundwater sources.
How many people does MCDONALDS VERNON serve? ▼
MCDONALDS VERNON serves 1,250 people in WAUKESHA, Wisconsin. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does MCDONALDS VERNON have? ▼
MCDONALDS VERNON has 118 total violations: 29 health-based violations (MCL exceedances or treatment failures), 85 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MCDONALDS VERNON water? ▼
No PFAS testing data is available for MCDONALDS VERNON under the EPA's UCMR5 monitoring program.
What water source does MCDONALDS VERNON use? ▼
MCDONALDS VERNON 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.

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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.

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