A100/100
WAIPIO HEIGHTS — Water Quality Report 2026
Serving 11,516 people · Hawaii
Water Source
Groundwater
County
—
System ID
HI0000334
Violations
0
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
vanadium | 33.00 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 WAIPIO HEIGHTS
Is WAIPIO HEIGHTS water safe to drink?
WAIPIO HEIGHTS 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 WAIPIO HEIGHTS detected?
66 contaminants were tested in WAIPIO HEIGHTS's water. Notable contaminants include vanadium. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WAIPIO HEIGHTS have any EPA violations?
No, WAIPIO HEIGHTS has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does WAIPIO HEIGHTS serve?
WAIPIO HEIGHTS serves approximately 11,516 people, Hawaii. The system provides water to 1 community: Waipio.
What type of water does WAIPIO HEIGHTS provide?
WAIPIO HEIGHTS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is HI0000334.
How does WAIPIO HEIGHTS compare to other utilities in Hawaii?
WAIPIO HEIGHTS 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.