Marana Municipal - Marana, AZ Water Quality
Marana Municipal - Marana: EPA violation history, explained
Marana Municipal - Marana has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 15,162 people get their water from it, across 6,793 connections.
Ranked against every other system in this dataset
Marana Municipal - Marana has 153 violations on record in total, 1 of them health-based - ranking it 7,176th of 12,903 systems by violation count, the 44th percentile nationally.
Against the AZ average
Among the 210 AZ systems in this dataset, the average is 8.0 health-based violations - Marana Municipal - Marana's 1 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
Marana Municipal - Marana's most recent violation on record is dated 2023-01-10, with the most recent health-based one dated 2008-01-09. Last reported to EPA: 05/14/2026.
The concern categories on record
Marana Municipal - Marana'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 Marana Municipal - Marana's record does not cover
Marana Municipal - Marana's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 1 health-based violation on file for Marana Municipal - Marana - 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.