A100/100
WAIALUA-HALEIWA — Water Quality Report 2026
Serving 9,996 people · Hawaii
Water Source
Groundwater
County
—
System ID
HI0000332
Violations
0
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
vanadium | 37.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 WAIALUA-HALEIWA
Is WAIALUA-HALEIWA water safe to drink?
WAIALUA-HALEIWA water receives a grade of A (100/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WAIALUA-HALEIWA detected?
66 contaminants were tested in WAIALUA-HALEIWA's water. Notable contaminants include vanadium. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WAIALUA-HALEIWA have any EPA violations?
No, WAIALUA-HALEIWA has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does WAIALUA-HALEIWA serve?
WAIALUA-HALEIWA serves approximately 9,996 people, Hawaii. The system provides water to 1 community: Waialua-Haleiwa.
What type of water does WAIALUA-HALEIWA provide?
WAIALUA-HALEIWA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is HI0000332.
How does WAIALUA-HALEIWA compare to other utilities in Hawaii?
WAIALUA-HALEIWA scores 100/100 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.