What's in MAYAGUEZ's water?
MAYAGUEZ had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 152,342 people get their water from it, across 57,057 connections.
MAYAGUEZ's record against the rest of the country
MAYAGUEZ has 791 violations on record in total, 108 of thems health-based - ranking it 61th of 12,903 systems by violation count, the 100th percentile nationally.
Against the PR average
PR's 103 covered systems average 46.1 health-based violations each; MAYAGUEZ carries 108, more than typical for the state. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
MAYAGUEZ's most recent violation on record is dated 2022-01-09, with the most recent health-based one dated 2022-01-09. Last reported to EPA: 06/05/2026.
The concern categories on record
MAYAGUEZ'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); Interim Enhanced Surface Water Treatment Rule; Long Term 2 Enhanced Surface Water Treatment Rule; Surface Water Treatment Rule
- Synthetic organic chemicals / pesticides / VOCs - flagged from: CARBON, TOTAL
- Disinfection byproducts - flagged from: TTHM; Total Haloacetic Acids (HAA5)
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 MAYAGUEZ's record does not cover
MAYAGUEZ'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. Between the utility's meter and MAYAGUEZ's customers' taps is household plumbing, invisible to a system-level record ranked 61th of 12,903 by violation count. The guide to what this data misses covers that gap.