Chaska, Minnesota Water Quality Report
Water quality data for 3 water systems serving 30,709 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 15.8 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 158% | Above guideline |
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Compliance & Violations
Active Violations (6)
52
Oct 1, 2025
52
Oct 1, 2025
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (54)
3A
Jul 1, 2018 — Sep 30, 2018
3A
Jul 1, 2018 — Sep 30, 2018
3A
Jul 1, 2018 — Sep 30, 2018
3A
Jul 1, 2018 — Sep 30, 2018
23
Apr 1, 2012 — Jun 30, 2012
+ 49 more resolved violations
Frequently Asked Questions
Is Chaska tap water safe to drink?
Chaska's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Chaska tap water?
1 contaminants have been detected in Chaska's water supply across 3 water systems. See the full contaminant table above for details.
How can I improve my water quality in Chaska?
Install a water filter rated for the specific contaminants found in Chaska's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Chaska have any water quality violations?
Yes, Chaska currently has 6 active violations. See the violations section above for details.