Hawaii assesses residential water usage and leak detection through data audits

On March 21, 2025, the Public Utilities Commission in Hawaii convened a significant meeting focused on water utility regulation, emphasizing the importance of accurate data collection and management in public water systems. This meeting is part of ongoing efforts to enhance water resource management across the state, particularly in light of increasing demands and environmental challenges.

A key discussion point was the introduction of advanced metering systems, which provide detailed insights into residential water usage patterns. Presenters highlighted the differences between typical water consumption and scenarios involving leaks. For instance, a residential customer without leaks demonstrated a predictable usage pattern, with no water consumption during nighttime hours. In contrast, a customer with a leak showed continuous water flow, underscoring the need for effective monitoring to identify and address leaks promptly.

The meeting also addressed the reporting requirements established by Act 169, which mandates annual water audits for public water systems. These audits are crucial for assessing water usage, identifying nonrevenue water, and ensuring the accuracy of data reported to the State Water Resource Management (Sea Worm). The act encompasses various public water systems, including those in designated water management areas across Molokai, Oahu, and parts of Maui.

Participants discussed the importance of data validity in these audits, emphasizing that poor data quality can lead to misleading conclusions. The validity of the information collected is critical, as it directly impacts the effectiveness of water management strategies. The meeting underscored the need for water systems to improve their data accuracy, with many systems currently rated at a tier 2 validity score, indicating a need for further refinement in their data collection processes.

In conclusion, the discussions at this meeting reflect a proactive approach to water utility regulation in Hawaii. By focusing on accurate data collection and management, the Public Utilities Commission aims to enhance the sustainability and reliability of water resources in the state. As these initiatives progress, stakeholders will continue to monitor the effectiveness of these measures and their implications for the community's water supply and management practices.