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Water Loss Control Program
Program Overview
WIFA, in partnership with the Arizona Department of Water Resources (ADWR), has completed Phase 2 of its Water Loss Control Program. The program utilized the American Water Works Association’s (AWWA) Program for Water Audits and Loss Control Programs; as the industry’s best practice for water loss accounting, otherwise known as the M36 methodology. The purpose of the Water Loss Control Program is to provide utilities with a foundational understanding of the M36 methodology, how to apply the methodology, and how water audit data may be used to assess and improve water loss performance at the utility level.

Cavanaugh, a nationally-recognized expert in the M36 methodology, was selected to conduct the M36 methodology training and metrics validation process for the pilot and Phase 2.

The M36 methodology is cost-effective because it analyzes costs of loss components, and includes a validation mechanism. Research has shown that without validation, systematic error can cause many water audits to be unreliable which can lead to unintentional, erroneous system management. The M36 methodology expresses metrics in terms of validity, volume and value for each water loss sub-component. Validity is the most important of these metrics, as it indicates the reliability of the other metrics in the water auditing process. The program includes a unique validation process where water loss experts review supporting documentation and interview utility staff to substantiate the contents of each water audit.

In this program, utilities were trained on the M36 Methodology, the AWWA Water Audit, and in developing the next steps in their own system water loss mitigation control program. Twenty-five small to medium-sized systems across Arizona were selected to participate in Phase 2.

WIFA would like to thank the Bureau of Reclamation's Water Resources Department for generously funding the purchase of the supplemental training materials.




M36 Water Loss Control Program – Pilot Phase Press Release

Arizona M36 Water Loss Control Program – Pilot Phase Final Report

Arizona M36 Water Loss Control Program - Phase 2 Summary Report

Arizona Water Loss Control Webpage