We all know drinking salt water is bad for you. But what if you could turn it into acceptable drinking water? Now you can.
Basically all you need is a improvised distiller.

Plans for a diy Distillation System can be found at the link below

How To Turn Salt Water Into Drinking Water

According to the CDC:

Distillation Systems

• Distillation Systems use a process of heating water to the boiling point and then collecting the water vapor as it condenses, leaving many of the contaminants behind.
• Distillation Systems have a very high effectiveness in removing protozoa (for example, Cryptosporidium, Giardia);
• Distillation Systems have a very high effectiveness in removing bacteria (for example, Campylobacter, Salmonella, Shigella, E. coli);
• Distillation Systems have a very high effectiveness in removing viruses (for example, Enteric, Hepatitis A, Norovirus, Rotavirus);
• Distillation Systems will remove common chemical contaminants, including arsenic, barium, cadmium, chromium, lead, nitrate, sodium, sulfate, and many organic chemicals.