F8/100
Trempealeau Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,888 residents · Wisconsin
What's In Trempealeau's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
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
TREMPEALEAU WATERWORKS
Population Served
1,888
Water Source
Groundwater
System ID
WI6620332
Frequently Asked Questions About Trempealeau Water
Is Trempealeau tap water safe to drink?
Trempealeau, Wisconsin tap water receives a grade of F (8/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 72 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Trempealeau's water?
1 contaminants were tested in Trempealeau's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Trempealeau have any water quality violations?
Yes, Trempealeau has 72 EPA violation(s) on record, with the most recent in 2012. Violation types include MR, Other, MCL. 5 of these are health-based violations, which are the most serious category.
Do I need a water filter in Trempealeau?
Trempealeau 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. All contaminants are within health goals.
Where does Trempealeau's tap water come from?
Trempealeau's drinking water is sourced from groundwater and supplied by TREMPEALEAU WATERWORKS. The system serves approximately 1,888 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Trempealeau'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. Trempealeau'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 Trempealeau's water compare to other cities in Wisconsin?
Trempealeau's water quality score of 8/100 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 Trempealeau's water quality?
If you have concerns about Trempealeau'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 (TREMPEALEAU 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.