PlainEnviro

Mequon Water Quality

Wisconsin

Health Violations

The tap water in Mequon, Wisconsin is served by 25 EPA-regulated water systems covering approximately 16,344 people. 9 health-based violations are on record, most recently for 5200 in 2024. Data source: EPA Safe Drinking Water Information System.

25
Water Systems
16,344
Population Served
9
Total Violations
9
Health-Based Violations

Drinking water in Mequon, Wisconsin is delivered through 25 EPA-regulated community water systems serving an estimated 16,344 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.

The SDWIS record for Mequon shows 9 total violations across all 25 systems, of which 9 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 5200, 0700, 0400. 3 TRI-reporting industrial facilities are also located within the city limits.

A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Wisconsin drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.

Community Water Systems

System Name Pop. Served Violations Status
MEQUON WATER UTILITY 11,152 0 Clean
CONCORDIA UNIVERSITY 1,500 0 Clean
MEQUON TRAIL TOWNHOMES 615 1 Health
HUNTINGTON PARK 600 0 Clean
WESTCHESTER LAKES SUBDIVISION 300 0 Clean
PARK PLACE SUBDIVISION 260 0 Clean
BRIGHTON RIDGE SUBDIVISION 200 0 Clean
HADDONSTONE SUBDIVISION 195 0 Clean
COUNTRY TERRACE CONDO HOMES 160 0 Clean
VINTAGE ESTATES 130 1 Health
KENILWORTH SUBD 120 0 Clean
MEQUON ON THE SQUARE CONDOMINIUM OWNERS ASSOCIATION INC 110 0 Clean
RAVINE FARMS HM OWNERS ASSOC 100 0 Clean
RIVER LAKE SUBDIVISION 100 0 Clean
WYNGATE SUBDIVISION 100 0 Clean
WOODRIDGE ESTATES 100 0 Clean
HIGHLAND COLONY ESTATES CONDO 88 0 Clean
RIVER TRAILS ESTATES WATER USERS 84 1 Health
LAKE COUNTRY APARTMENTS 84 0 Clean
WILLOW GLEN APARTMENTS 80 4 Health
MEQUON COLONY ESTATES 75 0 Clean
ELM GROVE TERRACE 75 1 Health
MEQUON PARC APARTMENTS LLC 60 0 Clean
VILLAGE GLEN APTS 30 0 Clean
MEQUON WATER TRUST 26 1 Health

Does this city have health-based water violations?

Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.

Contaminant Begin Date
5200 2024-10-17
5200 2024-10-17
5200 2024-10-17
5200 2024-10-17
5200 2024-10-17
0700 2024-07-23
0700 2024-07-23
0700 2024-07-23
0400 2014-01-02

TRI Facilities in Mequon

Facility Total Releases
Super Steel LLC 74 lbs
Jbt Corp 20 lbs
Rockwell Automation Inc 3 lbs

Frequently Asked Questions

Is Mequon, Wisconsin water safe to drink? ▼
Mequon is served by 25 EPA-regulated water systems covering approximately 16,344 people. 9 health-based violations have been recorded. A past violation does not necessarily mean water is currently unsafe, systems are required to notify customers and resolve issues. Contact your local water utility for current status.
How many water violations does Mequon have? ▼
Mequon water systems have a total of 9 violations on record in the EPA Safe Drinking Water Information System, of which 9 are health-based (MCL exceedances). The remaining violations are monitoring or reporting violations.
What contaminants were found in Mequon water? ▼
Health-based violations for Mequon water systems include the following contaminants: 5200, 0700, 0400. Source: EPA Safe Drinking Water Information System (SDWIS).
How many water systems serve Mequon? ▼
25 EPA-regulated community water systems serve Mequon, Wisconsin, collectively covering approximately 16,344 people. Data is from the EPA Safe Drinking Water Information System (SDWIS).
Where does Mequon get its drinking water? ▼
Mequon's water supply comes from 25 EPA-regulated community water systems. Source type data is not available for all systems. For detailed supply information, contact your local water utility. Source: EPA SDWIS.
Are there pollution sources near Mequon? ▼
Yes, 3 EPA Toxic Release Inventory (TRI) facilities are registered in Mequon, Wisconsin, reporting a combined 98 lbs of toxic chemical releases. TRI data reflects self-reported emissions; it does not measure exposure or health effects. Source: EPA TRI.

Related Guides

Understanding Water Quality Violations
What MCL violations mean and how to read EPA data
How to Check Environmental Quality
Step-by-step guide to checking your local environment
Understanding EPA Data
How EPA collects and publishes environmental data

About This Data

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.

A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.

TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro Editorial