A100/100
HAINA — Water Quality Report 2026
Serving 4,563 people · Hawaii
Water Source
Groundwater
County
—
System ID
HI0000161
Violations
0
Contaminant Test Results
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 HAINA
Is HAINA water safe to drink?
HAINA water receives a grade of A (100/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has HAINA detected?
31 contaminants were tested in HAINA's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does HAINA have any EPA violations?
No, HAINA has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does HAINA serve?
HAINA serves approximately 4,563 people, Hawaii. The system provides water to 1 community: Haina.
What type of water does HAINA provide?
HAINA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is HI0000161.
How does HAINA compare to other utilities in Hawaii?
HAINA 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.