Maui County, HI Water Use Rules: Leak Reporting Duty (2026)

010, assigns four specific leak-detection duties to the Department of Water Supply. Subsection A requires the department to monitor water consumption and issue high-consumption notices to consumers when warranted, the mechanism by which an unexplained spike in a customer's bill can flag a hidden leak. Subsection B requires the department to prioritize replacing old and leak-prone water mains, addressing losses in the distribution system itself rather than on private property. Subsection C requires the department, when tablets or other leak-detection methods are available, to reasonably distribute them to a consumer upon request, specifically to detect toilet tank leaks, one of the most common sources of unnoticed residential water loss.

Subsection D requires the department to encourage the public to report water leaks, though the code does not set a mandatory reporting deadline or penalty for a consumer who fails to report a leak on their own property. 040's parallel requirement that the department promote conservation education and, when available, provide water-efficient fixtures at no charge, and an incentive program for replacing old toilets and fixtures developed with the Board of Water Supply.