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AWWA M36 Water Loss Audit Information

Each year millions of gallons of water are lost to leakage, meter error, and water theft. The American Water Works Association (AWWA) has created the M36 Water Loss best practices program to help utilities measure and mitigate these losses. The program includes an audit guide, utility water audit summary statistics and regulatory developments.

Colorado WaterWise teamed up with the Colorado Water Conservation Board, the Rocky Mountain Section of AWWA, the Water Research Foundation, and Cavanaugh & Associates to provide state-wide water loss education by hosting AWWA M36 Water Loss Audit training events in several locations across Colorado in August and September of 2015. 

The events included foundational training on the AWWA M36 Water Auditing & Loss Control Methodology for water system improvements. Participants learned how to strategically apply the methodology and interpret the water audit data to assess and improve Water Loss performance at the utility level. This included information on how to:

  • Conduct the top-down AWWA Water Audit
  • Implement practices for bottom-up validation of the audit data
  • Assess Data Validity and develop improvements for audit reliability
  • Perform component analysis for Water Loss components – Volumes & Values
  • Use audit and component analysis results to identify next steps for Water Loss management in their system

m36 Water Loss audit Resources

The AWWA Water Audit method was developed jointly by the International Water Association and AWWA. The AWWA believes that this method provides the best management practice tools and guidance water utilities need to efficiently manage their supplies.

AWWA/IWA Water Loss Audit Software is available for FREE from AWWA. Visit their Water Loss Control page and fill out their short form to receive the latest version.

The Colorado Water Loss Initiative (CWLI) from 2019-2020 provided a comprehensive program of M36 Water Loss training and technical assistance to participating utilities. It was the combined effort of Colorado's Department of Natural Resources, the Colorado Water Conservation Board (CWCB), Cavanaugh and WSO.

Download slides and technical resources created for the initiative.

CWW hosted a water loss webinar in August of 2015 that featured lessons learned from many utilities across Colorado.

Webinar Slides

Webinar Audio

Colorado WaterWise                                  

PO Box 101012

Denver, CO 80250

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