Waipahu-Ewa-Waianae, HI Water Quality
Is Waipahu-Ewa-Waianae's water safe to drink?
Waipahu-Ewa-Waianae's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 217,479 people get their water from it, across 40,092 connections.
Waipahu-Ewa-Waianae's record against the rest of the country
Out of 12,903 systems in this dataset, Waipahu-Ewa-Waianae ranks 10,897th by violation burden (16th percentile) - 6 violations total, 0 health-based.
Against the HI average
HI's 48 covered systems average 8.2 health-based violations each; Waipahu-Ewa-Waianae carries 0, not more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
Waipahu-Ewa-Waianae's most recent violation on record is dated 2012-01-01. Last reported to EPA: 06/03/2026.
What Waipahu-Ewa-Waianae's record does not cover
Everything on this page is Waipahu-Ewa-Waianae'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 Waipahu-Ewa-Waianae's customers' taps is household plumbing, invisible to a system-level record ranked 10,897th of 12,903 by violation count. The guide to what this data misses covers that gap.