Lanai City
EPA ID: HI0000237 · 3,200 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Lanai City (HI0000237): 1 violation recorded with unresolved status in the SDWIS data used. Lanai City's EPA file includes 1 unresolved violation; the utility supplies water to approximately 3,200 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Lanai City Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Lanai City have a median household income of $79,808 and about 3,333 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 57% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Lanai City's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Hawaii
System Overview
Lanai City (EPA ID: HI0000237) is a community water system in Hawaii that serves approximately 3,200 people from groundwater sources.
This system serves ZIP code 96763 in Lanai City.
Violation History
Status breakdown for accepted records with record years 2021-2026: 10 resolved, 0 archived, 0 addressed, and 1 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 1, 2023 | Arsenic | Non-health-based | Resolved |
| January 1, 2023 | Barium | Non-health-based | Resolved |
| January 1, 2023 | Cadmium | Non-health-based | Resolved |
| January 1, 2023 | Chromium | Non-health-based | Resolved |
| January 1, 2023 | Mercury | Non-health-based | Resolved |
| January 1, 2023 | Nickel | Non-health-based | Resolved |
| January 1, 2023 | Antimony, Total | Non-health-based | Resolved |
| January 1, 2023 | Beryllium, Total | Non-health-based | Resolved |
| January 1, 2023 | Thallium, Total | Non-health-based | Resolved |
| January 1, 2023 | Selenium | Non-health-based | Resolved |
| January 1, 2022 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Arsenic | Monitoring & Reporting | 1 | No |
| Arsenic | Monitoring & Reporting | 1 | No |
| Barium | Monitoring & Reporting | 1 | No |
| Cadmium | Monitoring & Reporting | 1 | No |
| Antimony, Total | Monitoring & Reporting | 1 | No |
| Nickel | Other Violation | 1 | No |
| Selenium | Other Violation | 1 | No |
| Antimony, Total | Monitoring & Reporting | 1 | No |
| Beryllium, Total | Other Violation | 1 | No |
| Thallium, Total | Other Violation | 1 | No |
| Lead and Copper Rule | Monitoring & Reporting | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2021-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
1 of 1 ZIP records with known zones is in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by HI or modeled from parcel and building-footprint data.
- 96763 - Lanai City
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Lanai City (HI0000237) on EPA.gov.
Frequently Asked Questions
Is Lanai City water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Lanai City serve?
Lanai City serves approximately 3,200 people across 1 ZIP code in Hawaii.
Where does Lanai City get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Lanai City (HI): 11 EPA Violations. https://zipcheckup.com/water-system/hi0000237/
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author = {{ZipCheckup}},
title = {{Lanai City (HI): 11 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/hi0000237/}
}
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Lanai City (EPA ID: HI0000237) - request the latest Consumer Confidence Report or ask about specific contaminants.