What are the key considerations in the design and implementation of resilient water supply systems to ensure reliable access to clean water in the face of climate variability and extreme weather events? Discuss the importance of diversifying water sources, improving water storage and distribution infrastructure, and enhancing water quality monitoring and treatment capabilities to strengthen the resilience of water supply networks. How do engineers integrate nature$-$based solutions, such as rainwater harvesting, groundwater recharge, and green infrastructure, into water supply planning and management strategies to enhance water security, promote ecosystem services, and mitigate the impacts of droughts, floods, and water scarcity?