Water filters aren’t just for hypochondriacs. The tap water may taste badly due to chlorine and its mineral content. Chemicals introduced to tap water during the cleaning process may be unhealthy to drink. It’s possible for bacteria and other germs to enter water after it undergoes the treatment process. If your pipes are old or corroded, water may shave away sediment or metal shavings, which will then get into your water supply. Water filters can provide better tasting tap water and a “last line of defense” for those who want to make sure their water is safe. This is why it’s important to understand how water filters work.