CERRILLOS: EPA violation history, explained

CERRILLOS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 5,658 people get their water from it, across 2,119 connections.

How this compares nationally

CERRILLOS has 79 violations on record in total, 5 of thems health-based - ranking it 3,390th of 12,903 systems by violation count, the 74th percentile nationally.

Against the PR average

Among the 103 PR systems in this dataset, the average is 46.1 health-based violations - CERRILLOS's 5 is at or below that. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

CERRILLOS's most recent violation on record is dated 2020-01-07, with the most recent health-based one dated 2011-01-11. Last reported to EPA: 06/05/2026.

The concern categories on record

CERRILLOS'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 CERRILLOS's record does not cover

Everything on this page is CERRILLOS's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 5 health-based violations on file for CERRILLOS - 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.