If you want something to be available in a reliable fashion it needs to be privatized not treated as a "public good." When resources are privately owned there are incentives to protect them. When no one owns a thing it is subject to the tragedy of the commons.

Also, most of the water cycle problems have nothing to do with "climate change" or warming. The major problem in a lot of areas is the lack of large herd animals which mow out dead growth, & then poop & pee & fertilize new growth which dramatically increases the amount of water the ground can hold. Climate tards are always wrong on every count. We need more animals, more CO2, & more plants, then everything thrives, & local water cycles become more stable everywhere.