F15/100
Cedarburg Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 11,800 residents · Wisconsin
What's In Cedarburg's Tap Water?
67
Contaminants Tested
1
Exceed EPA Limits
2
Above EPA Goals
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.80 mg/L | 1.30 mg/L | Over Limit |
strontium | 2120.40 µg/L | — | Above Goal |
Lead (90th percentile) | 0.008 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2010.
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
CEDARBURG L & W COMMISSION
Population Served
11,800
Water Source
Groundwater
System ID
WI2460108
Frequently Asked Questions About Cedarburg Water
Is Cedarburg tap water safe to drink?
Cedarburg, Wisconsin tap water receives a grade of F (15/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 67 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Cedarburg's water?
Of the 67 contaminants tested in Cedarburg's water supply, the most notable include Copper (90th percentile), Lead (90th percentile), strontium. 1 contaminant(s) exceed EPA legal limits (MCLs). 3 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Cedarburg have any water quality violations?
Yes, Cedarburg has 67 EPA violation(s) on record, with the most recent in 2010. Violation types include MCL, MR, Other. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Cedarburg?
Based on EPA data, using a water filter in Cedarburg 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 Cedarburg's tap water come from?
Cedarburg's drinking water is sourced from groundwater and supplied by CEDARBURG L & W COMMISSION. The system serves approximately 11,800 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Cedarburg'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. Cedarburg'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 Cedarburg's water compare to other cities in Wisconsin?
Cedarburg's water quality score of 15/100 earns a grade of F, which is considered failing. 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 Cedarburg's water quality?
If you have concerns about Cedarburg'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 (CEDARBURG L & W 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.