I think we need to stop drawing water from under the ground, it is causing some major problems, and increasing desertification. The Chinese are starting to provide desalination plants, and this would seem to be a better solution. It provides a pretty marginal reduction in sea levels, but more importantly, it starts to replace the groundwater, and can lead to reforestation if managed correctly.
Throughout the world there is scarcity of water. Country's that have planned infrastructure for the rain water harvesting were the one that fulfills their needs unlike any climate change. The groundwater level keeps going down, but desalination can't be made effective in all the countries. In my country we've desalination plants, but lack of perfect infrastructure plan has caused scarcity of water as we haven't got regular rainfall percentage.