Volumetric Water Benefit Accounting 2.0 (VWBA 2.0)

Guidance for Implementing, Evaluating, and Claiming Volumetric Water Benefits of Water Stewardship Projects

By World Resources Institute (WRI), LimnoTech, BlueRisk, and Bonneville Environmental Foundation (BEF)

September 18, 2025

As water challenges intensify, companies need clear, consistent, and science-based guidance to make credible volumetric water benefit (VWB) claims that advance ambitious water goals.

Developed by WRI, LimnoTech, Bluerisk, and Bonneville Environmental Foundation, Volumetric Water Benefit Accouting 2.0 (VWBA 2.0) is an improved version of VWBA that builds on lessons learned over the years. This guidance document provides corporate practitioners and project implementers with a clearly defined six-step approach for identifying water stewardship activities and quantifying, tracking, and communicating their volumetric water benefits. It offers voluntary, principle-based, and non-prescriptive guidance applicable to a broad spectrum of water stewardship activities.