What's in ISABELA's water?
ISABELA has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 49,937, over 18,703 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, ISABELA ranks 25th by violation burden (100th percentile) - 255 violations total, 162 health-baseds.
Against the PR average
Among the 103 PR systems in this dataset, the average is 46.1 health-based violations - ISABELA's 162 is above that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
ISABELA's most recent violation on record is dated 2020-01-07, with the most recent health-based one dated 2018-01-04. Last reported to EPA: 06/05/2026.
The concern categories on record
ISABELA'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; Revised Total Coliform 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 ISABELA's record does not cover
ISABELA'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 - 162 health-based violations on file for ISABELA - 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.