Theresa, Wisconsin Water Quality Report
Water quality data for 1 water system serving 1,262 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (8)
75
Oct 17, 2024
2E
Oct 17, 2024
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (224)
12
Sep 3, 2025
12
Sep 3, 2025
71
Jul 1, 2019
71
Jul 1, 2019
72
Jul 1, 2019
+ 219 more resolved violations
Frequently Asked Questions
Is Theresa tap water safe to drink?
Theresa's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Theresa tap water?
0 contaminants have been detected in Theresa's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Theresa?
Install a water filter rated for the specific contaminants found in Theresa's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Theresa have any water quality violations?
Yes, Theresa currently has 8 active violations. See the violations section above for details.