AURORA CITY OF: EPA violation history, explained

AURORA CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 533,407, over 91,821 connections.

Ranked against every other system in this dataset

7 total violations and 1 health-based ones put AURORA CITY OF at the 35th percentile nationally for violation burden, rank 8,420 of 12,903.

How AURORA CITY OF compares within CO

Among the 230 CO systems in this dataset, the average is 3.0 health-based violations - AURORA CITY OF's 1 is at or below that. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

The last violation EPA has on record for AURORA CITY OF is from 2016-01-01 (health-based: 2011-01-01). Last reported to EPA: 06/17/2026.

What kind of problem, specifically

AURORA CITY OF'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 this data is and is not

Everything on this page is AURORA CITY OF'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 AURORA CITY OF - 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.