What's in LAHAINA's water?
LAHAINA has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 20,065 people get their water from it, across 3,236 connections.
LAHAINA's record against the rest of the country
Out of 12,903 systems in this dataset, LAHAINA ranks 454th by violation burden (96th percentile) - 65 violations total, 35 health-baseds.
Against the HI average
HI's 47 covered systems average 8.4 health-based violations each; LAHAINA carries 35, more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
LAHAINA's most recent violation on record is dated 2016-01-11, with the most recent health-based one dated 1997-01-05. Last reported to EPA: 06/03/2026.
The concern categories on record
LAHAINA'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); Surface Water Treatment Rule
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 LAHAINA's record does not cover
This is what LAHAINA reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. This record - 35 health-based violations on file for LAHAINA - 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.