For decades, the news about water infrastructure in the United States hasn’t been good. Development, treatment facilities, delivery systems, and restoration of natural systems have all been severely underfunded. But now, there is good news. There is a lot of funding available for infrastructure improvement, including water infrastructure.

The unpredictability of rainfall is a major water supply problem. When it’s raining, we must find ways to capture and store it while leaving enough to sustain natural systems. But, often, there’s more rain than we or nature can absorb, resulting in flooding. On the opposite side of that concern is experiencing drought. One thing is certain, water security is essential, and there is no time for...