F0/100
LAHAINA — Water Quality Report 2026
Serving 20,065 people · Hawaii
Water Source
Surface Water
County
—
System ID
HI0000214
Violations
64
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2016.
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 LAHAINA
Is LAHAINA water safe to drink?
LAHAINA water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 64 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LAHAINA detected?
69 contaminants were tested in LAHAINA's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does LAHAINA have any EPA violations?
Yes, LAHAINA has 64 EPA violation(s) on record, with the most recent in 2016. Violation types include MR, MCL, TT. 35 are health-based violations.
How many people does LAHAINA serve?
LAHAINA serves approximately 20,065 people, Hawaii. The system provides water to 1 community: Lahaina.
What type of water does LAHAINA provide?
LAHAINA sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is HI0000214.
How does LAHAINA compare to other utilities in Hawaii?
LAHAINA scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Hawaii state page for a full comparison of water systems.