CORALVILLE MUNI WATER SYSTEM: EPA violation history, explained
CORALVILLE MUNI WATER SYSTEM has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 22,318, over 6,608 connections.
CORALVILLE MUNI WATER SYSTEM's record against the rest of the country
CORALVILLE MUNI WATER SYSTEM has 16 violations on record in total, 1 of them health-based - ranking it 7,927th of 12,903 systems by violation count, the 39th percentile nationally.
Against the IA average
Among the 203 IA systems in this dataset, the average is 3.5 health-based violations - CORALVILLE MUNI WATER SYSTEM's 1 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
CORALVILLE MUNI WATER SYSTEM's most recent violation on record is dated 2018-01-12, with the most recent health-based one dated 1991-01-03. Last reported to EPA: 06/17/2026.
The concern categories on record
CORALVILLE MUNI WATER SYSTEM's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What CORALVILLE MUNI WATER SYSTEM's record does not cover
Everything on this page is CORALVILLE MUNI WATER SYSTEM's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 1 health-based violation on file for CORALVILLE MUNI WATER SYSTEM - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.