Oshkosh Waterworks, WI Water Quality
Oshkosh Waterworks: EPA violation history, explained
Oshkosh Waterworks's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. Population served: 63,000, over 22,487 connections.
Ranked against every other system in this dataset
Oshkosh Waterworks has 5 violations on record in total, 0 of them health-based - ranking it 11,092th of 12,903 systems by violation count, the 14th percentile nationally.
Against the WI average
Among the 259 WI systems in this dataset, the average is 5.4 health-based violations - Oshkosh Waterworks's 0 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
Oshkosh Waterworks's most recent violation on record is dated 2023-01-07. Last reported to EPA: 05/29/2026.
What Oshkosh Waterworks's record does not cover
Everything on this page is Oshkosh Waterworks's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and Oshkosh Waterworks's customers' taps is household plumbing, invisible to a system-level record ranked 11,092th of 12,903 by violation count. The guide to what this data misses covers that gap.