C51/100
LANAI CITY — Water Quality Report 2026
Serving 3,200 people · Hawaii
Water Source
Groundwater
County
—
System ID
HI0000237
Violations
45
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2022Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 LANAI CITY
Is LANAI CITY water safe to drink?
LANAI CITY water receives a grade of C (51/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 45 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LANAI CITY detected?
1 contaminants were tested in LANAI CITY's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does LANAI CITY have any EPA violations?
Yes, LANAI CITY has 45 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, MCL. 1 are health-based violations.
How many people does LANAI CITY serve?
LANAI CITY serves approximately 3,200 people, Hawaii. The system provides water to 1 community: Lanai.
What type of water does LANAI CITY provide?
LANAI CITY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is HI0000237.
How does LANAI CITY compare to other utilities in Hawaii?
LANAI CITY scores 51/100 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.