Hawaiian Volcanic-Rock Aquifer — Maui Central Valley
The Iao aquifer in Maui's central valley is the island's primary water source. Basalt aquifer with a basal freshwater lens. Over-pumping has caused saltwater intrusion — the Iao aquifer was declared a groundwater management area by the Hawaii Commission on Water Resource Management.
Overview
The Iao aquifer in Maui's central valley is the island's primary water source. Basalt aquifer with a basal freshwater lens. Over-pumping has caused saltwater intrusion — the Iao aquifer was declared a groundwater management area by the Hawaii Commission on Water Resource Management.
Water Source Data
Water Intelligence Score Breakdown
Total: 72/100Risk Assessment
Source depletion probability
Rights & regulatory exposure
Contamination & ecosystem risk
Geological Intelligence
Formation & aquifer contextDense, low primary porosity — yields via fractures
Water table aquifer — recharges directly from surface
Land Details
Public AccessWater Rights
UnverifiedRights Status Unknown
Not yet researched
Water rights for this asset have not been independently verified. Title research and jurisdictional review are required before any acquisition.
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- Contact state water resources agency
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Disclaimer: Water rights information is provided for research and informational purposes only and does not constitute legal advice. Rights status, seniority, transferability, and enforceability vary by jurisdiction and change over time. Always consult a licensed water rights attorney and verify status with the relevant state water resources agency before any acquisition or use decision.
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Location
Data Sources & Attribution
Updated Apr 4, 2026Data is sourced from public and authoritative providers. Hi3 Water aggregates, normalizes, and scores records but does not assert ownership of underlying source data. Always verify critical details with the primary source before any decision.