Throughout California, the lack of safe and affordable water is an everyday reality in many disadvantaged communities. Given that water quality problems are often concentrated in small, rural locations that lack the resources needed to solve their drinking water problems, California policy makers have acknowledged the need to address challenges on a regional basis. Here, the idea of Integrated Regional Water Management (IRWM) holds much promise. But, until recently, IRWM venues have been inaccessible to disadvantaged communities. To remedy these problems, the California Department of Water Resources funded seven pilot projects to develop models for improving participation and addressing the water needs of these communities. This study is assessing how well these IRWM planning efforts address the needs of disadvantaged communities in California.