F0/100
SOUTH KOHALA — Water Quality Report 2026
Serving 9,612 people · Hawaii
Water Source
Surface Water
County
—
System ID
HI0000130
Violations
96
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 3.70 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Missed required monitoring deadline
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 1, 2024 – August 15, 2024Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
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 SOUTH KOHALA
Is SOUTH KOHALA water safe to drink?
SOUTH KOHALA water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 96 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SOUTH KOHALA detected?
47 contaminants were tested in SOUTH KOHALA's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does SOUTH KOHALA have any EPA violations?
Yes, SOUTH KOHALA has 96 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, TT, MCL. 89 are health-based violations.
How many people does SOUTH KOHALA serve?
SOUTH KOHALA serves approximately 9,612 people, Hawaii. The system provides water to 1 community: South Kohala.
What type of water does SOUTH KOHALA provide?
SOUTH KOHALA 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 HI0000130.
How does SOUTH KOHALA compare to other utilities in Hawaii?
SOUTH KOHALA 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.