Dawn of a thirsty centuary

The worlds water is salty but only 2.5% of it is not. The people that drink the water and dose not clean will probably get an infection or they will get sick. They are people that drink water like that and some get some ugly long worms that they come out of there feet. So its important that we clean our waters so we wound get some weird diseases . Then in this world we have a lot of water and then we have floods.