A99/100
KAHUKU — Water Quality Report 2026
Serving 2,730 people · Hawaii
Water Source
Groundwater
County
—
System ID
HI0000365
Violations
1
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2010.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About KAHUKU
Is KAHUKU water safe to drink?
KAHUKU water receives a grade of A (99/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has KAHUKU detected?
1 contaminants were tested in KAHUKU's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does KAHUKU have any EPA violations?
Yes, KAHUKU has 1 EPA violation(s) on record, with the most recent in 2010. Violation types include MR.
How many people does KAHUKU serve?
KAHUKU serves approximately 2,730 people, Hawaii. The system provides water to 1 community: Kahuku.
What type of water does KAHUKU provide?
KAHUKU sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is HI0000365.
How does KAHUKU compare to other utilities in Hawaii?
KAHUKU scores 99/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Hawaii state page for a full comparison of water systems.