Water purification

Water purification is like brushing your teeth. You have to get rid of the bad stuff first and then fill up with the good. In this case, the bad stuff is things like germs and dirt, while the good is clean, safe water. To get rid of the bad stuff, you have to filter it or use chemicals to kill the germs. After the bad stuff is gone, you can add things like minerals to make the water safe to drink.