WAIKOLOA: EPA violation history, explained
WAIKOLOA has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 12,100 people get their water from it, across 2,120 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, WAIKOLOA ranks 5,485th by violation burden (57th percentile) - 6 violations total, 3 health-baseds.
How WAIKOLOA compares within HI
Among the 47 HI systems in this dataset, the average is 8.4 health-based violations - WAIKOLOA's 3 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 WAIKOLOA is from 2010-01-03 (health-based: 2010-01-02). Last reported to EPA: 06/03/2026.
What kind of problem, specifically
WAIKOLOA'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
WAIKOLOA'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 - 3 health-based violations on file for WAIKOLOA - 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.