Oshkosh, Wisconsin Water Quality Report
Water quality data for 4 water systems serving 67,076 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (7)
4H
Jul 2, 2025
76
Oct 17, 2024
75
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
Violation
Unknown
Violation
Unknown
Resolved Violations (69)
66
Jan 1, 2025
66
Jan 1, 2025
3A
Dec 1, 2024 — Dec 31, 2024
3A
Dec 1, 2024 — Dec 31, 2024
3A
Dec 1, 2024 — Dec 31, 2024
+ 64 more resolved violations
Frequently Asked Questions
Is Oshkosh tap water safe to drink?
Oshkosh'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 Oshkosh tap water?
0 contaminants have been detected in Oshkosh's water supply across 4 water systems. See the full contaminant table above for details.
How can I improve my water quality in Oshkosh?
Install a water filter rated for the specific contaminants found in Oshkosh's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Oshkosh have any water quality violations?
Yes, Oshkosh currently has 7 active violations. See the violations section above for details.