Pumping seawater would relieve a symptom of the problem without addressing the cause. It would also introduce new problems.
- The transportation of the water would require a lot of energy, and a lot of infrastructure both to supply the energy and to house pumps and other equipment. It would require maintenance too.
- The water would have to be desalinated, which requires more energy, infrastructure and maintenance.
- The resulting water would be extremely expensive for the end users, or leave them permanently dependent on outside funding.
- Water would still be scarce, compared to the amount of water that is pumped inland by forests.
- It would only solve one problem, and only for those who could afford the water. The underlying causes of desertification and other problems, such as poverty, are not addressed.