C51/100
Lake Geneva Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 12,395 residents · Wisconsin
What's In Lake Geneva's Tap Water?
31
Contaminants Tested
1
Exceed EPA Limits
1
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.004 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.008 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2022 – December 31, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2022 – December 31, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
LAKE GENEVA UTILITY COMMISSION
Population Served
7,107
Water Source
Groundwater
System ID
WI2650066
GENEVA NATIONAL COMMUNITY SERVICES
Population Served
2,250
Water Source
Groundwater
System ID
WI2650907
LAKE COMO SANITARY DIST 1
Population Served
3,038
Water Source
Groundwater
System ID
WI2651536
Frequently Asked Questions About Lake Geneva Water
Is Lake Geneva tap water safe to drink?
Lake Geneva, Wisconsin tap water receives a grade of C (51/100), which is considered fair. 1 contaminant(s) exceed EPA maximum contaminant levels and 101 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Lake Geneva's water?
Of the 31 contaminants tested in Lake Geneva's water supply, the most notable include PFOA, Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Lake Geneva have any water quality violations?
Yes, Lake Geneva has 101 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, Other, MCL. 7 of these are health-based violations, which are the most serious category.
Do I need a water filter in Lake Geneva?
Based on EPA data, using a water filter in Lake Geneva is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Lake Geneva's tap water come from?
Lake Geneva's drinking water is sourced from groundwater and supplied by LAKE GENEVA UTILITY COMMISSION and 2 other water system(s). The system serves approximately 12,395 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Lake Geneva's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Lake Geneva's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Lake Geneva's water compare to other cities in Wisconsin?
Lake Geneva's water quality score of 51/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Wisconsin state page to see how all cities in the state compare.
What should I do if I'm concerned about Lake Geneva's water quality?
If you have concerns about Lake Geneva's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (LAKE GENEVA UTILITY COMMISSION) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.