The importance of boiling water

In America, we take for granted the availability of clean drinking water. Here, when my water comes out of the tap across the street its brown. To make it ok to drink I boil it, filter it, and put a drop of bleach in it. The summer has arrived here, so I am drinking more water than before and turning my stove on to boil it turns my room into an oven. The other day I misjudged and ran out of clean water. Big mistake! Diarrhea, vomit, fever. ugh! The fever broke and I am starting to feel better.