EL ROSARIO: EPA violation history, explained
EL ROSARIO has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 2,374 people get their water from it, across 889 connections.
EL ROSARIO's record against the rest of the country
EL ROSARIO has 66 violations on record in total, 7 of thems health-based - ranking it 2,590th of 12,903 systems by violation count, the 80th percentile nationally.
Against the PR average
EL ROSARIO's 7 health-based violations sit within the PR average of 46.1, across 103 systems statewide. See the lead and copper guide for why lead counts differently.
Most recent violation on record
EL ROSARIO's most recent violation on record is dated 2022-01-07, with the most recent health-based one dated 2009-01-06. Last reported to EPA: 06/05/2026.
The concern categories on record
EL ROSARIO'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 EL ROSARIO's record does not cover
Everything on this page is EL ROSARIO's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and EL ROSARIO's customers' taps is household plumbing, invisible to a system-level record ranked 2,590th of 12,903 by violation count. The guide to what this data misses covers that gap.