Water Quality in Lake Geneva, WI: 63 Violations - Grade N/A
5 water systems · 1 directly mapped ZIP records
Available EPA records report 63 violations across 1 directly mapped ZIP records with known counts for Lake Geneva. This is compliance evidence, not a property-level tap-water verdict.
Data: EPA Safe Drinking Water Information System (SDWIS)
Water Quality by ZIP Code in Lake Geneva
This table shows typed EPA water evidence only. Missing violation counts are displayed as N/A, not zero.
| ZIP Code | Violations | Health | |
|---|---|---|---|
| 53147 | 63 | 5 | View report → |
Violation Trend
EPA violations recorded for water systems serving Lake Geneva.
| Year | Total violations | Health-based |
|---|---|---|
| 2024 | 2 | 2 |
| 2025 | 2 | 2 |
Water Quality Overview
Lake Geneva, Wisconsin has directly mapped EPA water-system data for 1 ZIP codes. This page reports typed compliance facts and does not relabel the multi-source Home Safety Score as a drinking-water grade.
The available EPA records report 63 violations, including 5 health-based violations across 1 directly mapped ZIP record with reported counts.
Lead Levels
The average 90th percentile lead level across Lake Geneva water systems is 0.0160 mg/L - this exceeds the EPA action level of 0.015 mg/L. 1 ZIP code exceed the EPA lead action level.
With 60% of homes built before 1986, Lake Geneva has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Water Systems Serving Lake Geneva
Lake Geneva is served by 5 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 18,440 people across 1 ZIP code.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving Lake Geneva. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Lake Geneva
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels and violation history
Request your CCR - your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test - certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration - NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories - monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Lake Geneva Water Systems
The following contaminants have been detected or caused violations across Lake Geneva's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | N/A | 10 | 1 | Yes |
| Surface Water Treatment Rule | Treatment Technique | N/A | 9 | 1 | No |
| Gross Beta | Radionuclides | 50 pCi/L | 7 | 1 | Yes |
| Radium-226 | Radionuclides | 5 pCi/L | 6 | 1 | No |
| Radium-228 | Radionuclides | 5 pCi/L | 6 | 1 | No |
| Lead and Copper Rule | Treatment Technique | N/A | 6 | 1 | No |
| Combined Radium | Radionuclides | 5 pCi/L | 5 | 1 | No |
| Gross Alpha | Radionuclides | 15 pCi/L | 4 | 1 | No |
| Stage 2 DBP Rule | Treatment Technique | N/A | 3 | 1 | Yes |
| Cadmium | Inorganic | 0.005 mg/L | 2 | 1 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 2 | 1 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 2 | 1 | No |
| Revised Total Coliform Rule | Microbiological | N/A | 1 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving Lake Geneva:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2024 | 2 | 2 |
| 2025 | 2 | 2 |
Violation counts have remained stable over the observed period.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Lake Geneva. Recent actions:
| Date | Action Type |
|---|---|
| 2026-01-09 | State Informal Action |
| 2026-01-09 | State Order Extension |
| 2025-12-29 | State Informal Enforcement |
| 2025-07-16 | State Order Extension |
| 2025-06-18 | EPA Informal Action |
| 2025-03-05 | State Informal Enforcement |
| 2024-12-30 | State Order Extension |
| 2024-10-18 | State Order Extension |
| 2024-09-16 | State Order Extension |
| 2024-09-05 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2026-01-09.
Lake Geneva vs. Nearby Wisconsin Cities
How Lake Geneva's water quality compares to similar cities in Wisconsin:
| City | Direct EPA ZIPs | Violations | Systems | Population |
|---|---|---|---|---|
| Lake Geneva | 1 | 63 | 5 | 18,440 |
| Fort Atkinson | 1 | 10 | 5 | 18,604 |
| Elkhorn | 1 | 4 | 2 | 18,640 |
| Pleasant Prairie | 1 | 4 | 2 | 18,161 |
Common Questions About Lake Geneva Water
These are the most common questions residents search for about water quality in Lake Geneva, Wisconsin:
Is Lake Geneva water hard or soft? Water hardness varies by source. Lake Geneva's 5 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Lake Geneva tap water? City-level EPA records cannot determine safety at a specific tap. The measured subset contains 5 health-based violations; check the affected utility record and consider certified testing.
What is the best water filter for Lake Geneva? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Lake Geneva vs. Wisconsin Average
Understanding how Lake Geneva compares to the broader Wisconsin average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below - water quality can vary significantly even within Lake Geneva.
ZIP Codes in Lake Geneva
Lake Geneva spans 1 ZIP code. EPA water-system coverage is available for 1 directly mapped ZIP code. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Source reporting periods vary. See each cited source for its publication schedule.