[3ple_alpha]

There are some partial solutions that are fairly simple in concept, for example those related to farming. Some of the crops grown in regions where water is less than abundant are unnecessarily water-intensive, leading to a possible strategy that can be summarised as "grow something else". In practice this means regulating farming with emphasis on water management, I often feel that many places could use more regulation in this area.

Simple concept does not mean simple execution, once you start regulating things it's easy to get it wrong, but the ideas are there and are not exactly novel.

[swiftcoder]

There are also a variety of co-planting schemes that drastically reduce water use (i.e. things like combining vegetable farming with shade trees), albeit often at the expense of making mechanical harvesting significantly more challenging.