The water management and utilities sectors have made significant progress towards implementation of adaptation strategies using broad-based participatory planning approaches. Consideration of climate change is now folded into some ongoing watershed-wide planning efforts. An example is provided by the One-Water-One-Watershed  approach followed by the Santa Ana Watershed Project Authority  in southern California. SAWPA is a joint powers authority comprising five regional water districts that provide drinking water to more than 6 million people as well as industrial and irrigation water across the 2400-square-mile watershed. The OWOW perspective focuses on integrated planning for multi-benefit projects and explicit consideration of the impacts of any planning option across the entire watershed. Planning is supported by stakeholder-driven advisory bodies organised along themes that consider a full suite of technical, political, environmental and social considerations. SAWPA provides member agencies with decision-support tools and assistance to implement water conservation policies and pricing regimes, and one member agency is an industry leader on potable water recycling.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report