Free Water Audit Software

Just Released: Version 6.1
The Free Water Audit Software (FWAS) has seen exponential growth in adoption since original release (v1) in the mid-2000s. There continues to be growth in the North American water industry for the FWAS as the industry-standard tool for conducting a top-down water balance and assessment of associated Key Performance Indicators (KPIs).
FWAS v6.0 was released in 2020 and included significant evolutions in the tool. Following the 2025 publication of the AWWA Water Loss Control Committee Report on the Leakage Emissions Initiative (LEI), the FWAS Development Group integrated the LEI methodology for quantifying carbon emissions into the FWAS v6.1.
All the same functionality of v6.0 remains, with the addition of Carbon Calculations and a Carbon Balance.
Download Version 6.1
Fill out the short form to download the AWWA Free Water Audit Software v6.1 (2025) or v6.0 (2020).
The resources below are also available from the 2020 release Free Water Audit Software (v6.0).
- AWWA Water Software v6.0 Release Memo
- Example Water Audit v6.0
- Data Grading Matrix v6.0
- Watch the AWWA Water Audit Software v6.0 Orientation Video
- Watch the AWWA Water Audit Software webinar to learn about key upgrades included in version 6.0.
Non-revenue water report in Spanish.


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