D27/100
Clear Lake Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,061 residents · Wisconsin
What's In Clear Lake's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2012.
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
CLEAR LAKE WATERWORKS
Population Served
1,061
Water Source
Groundwater
System ID
WI6490335
Frequently Asked Questions About Clear Lake Water
Is Clear Lake tap water safe to drink?
Clear Lake, Wisconsin tap water receives a grade of D (27/100), which is considered poor. 0 contaminant(s) exceed EPA maximum contaminant levels and 66 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Clear Lake's water?
Of the 1 contaminants tested in Clear Lake's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Clear Lake have any water quality violations?
Yes, Clear Lake has 66 EPA violation(s) on record, with the most recent in 2012. Violation types include Other, MCL, MR. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Clear Lake?
Clear Lake water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Clear Lake's tap water come from?
Clear Lake's drinking water is sourced from groundwater and supplied by CLEAR LAKE WATERWORKS. The system serves approximately 1,061 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Clear Lake'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. Clear Lake'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 Clear Lake's water compare to other cities in Wisconsin?
Clear Lake's water quality score of 27/100 earns a grade of D, which is considered poor. This is a concerning score that suggests significant water quality issues. Visit our Wisconsin state page to see how all cities in the state compare.
What should I do if I'm concerned about Clear Lake's water quality?
If you have concerns about Clear Lake'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 (CLEAR LAKE WATERWORKS) 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.