1.The project supports the Government of Republic of the Marshall Islands (GoRMI) in adapting to increasing climate risks, particularly more frequent and extreme droughts, which impact the country's drinking water supply. Communities and the households in RMI primarily rely on a single water resource and supply system, which makes them highly vulnerable to risks of water shortages and drought. Despite previous water related investments, the people of RMI still do not have year-round access to safe freshwater supply for drinking, cooking hygiene and sanitation, particularly under droughts lengthened through climate change impacts. 2.The proposed intervention aims to increase resilience of water resources for drinking and hygiene purposes in RMI. This will be done by:•Improving household and community rainwater harvesting and storage structures to increase resilience of water supply in all outer islands and atolls accounting for approximately 28% of RMI's population, including 7,630 (49%) women, currently at risk •Securing groundwater resources from contamination due to inundation caused by wave overtopping of seawater.•Strengthening the technical capacities of national and subnational institutions and key stakeholders to integrated climate change risks into water governance processes so that management of climate change risks are coordinated, effective, participatory, equitable, and sustained over the long-term when risks are expected to worsen.