Lanai City, HI Water Quality
What's in Lanai City's water?
Lanai City has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 3,200 people get their water from it, across 1,350 connections.
Lanai City's record against the rest of the country
Out of 12,903 systems in this dataset, Lanai City ranks 7,406th by violation burden (43th percentile) - 56 violations total, 1 health-based.
How Lanai City compares within HI
HI's 48 covered systems average 8.2 health-based violations each; Lanai City carries 1, not more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for Lanai City is from 2023-01-01 (health-based: 2005-01-02). Last reported to EPA: 06/03/2026.
What kind of problem, specifically
Lanai City's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
Everything on this page is Lanai City's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 56 logged violations can see. The guide to what this data misses covers that gap.