Cornelius, City of, OR Water Quality
What's in Cornelius, City of's water?
Cornelius, City of's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. Population served: 14,490, over 4,153 connections.
Ranked against every other system in this dataset
39 total violations and 0 health-based ones put Cornelius, City of at the 25th percentile nationally for violation burden, rank 9,680 of 12,903.
Against the OR average
OR's 160 covered systems average 6.0 health-based violations each; Cornelius, City of carries 0, not more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
Cornelius, City of's most recent violation on record is dated 2024-01-01. Last reported to EPA: 06/26/2026.
What Cornelius, City of's record does not cover
This is what Cornelius, City of reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Between the utility's meter and Cornelius, City of's customers' taps is household plumbing, invisible to a system-level record ranked 9,680th of 12,903 by violation count. The guide to what this data misses covers that gap.