C50/100
KAUPULEHU — Water Quality Report 2026
Serving 1,945 people · Hawaii
Water Source
Groundwater
County
—
System ID
HI0000163
Violations
14
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2011.
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 KAUPULEHU
Is KAUPULEHU water safe to drink?
KAUPULEHU water receives a grade of C (50/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 14 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has KAUPULEHU detected?
2 contaminants were tested in KAUPULEHU's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does KAUPULEHU have any EPA violations?
Yes, KAUPULEHU has 14 EPA violation(s) on record, with the most recent in 2011. Violation types include Other, TT. 7 are health-based violations.
How many people does KAUPULEHU serve?
KAUPULEHU serves approximately 1,945 people, Hawaii. The system provides water to 1 community: Kona.
What type of water does KAUPULEHU provide?
KAUPULEHU sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is HI0000163.
How does KAUPULEHU compare to other utilities in Hawaii?
KAUPULEHU scores 50/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Hawaii state page for a full comparison of water systems.