This started by the city switching its water supply. Then lead got into the water.
The Water Cycle for Schools, from the USGS Water Science School. The clouds have water in them and they come out when it rains and and cycle starts. Then precipitation happens and then condensation. Last evaporation happens. When there is to much water is starts runoff the land that is called a run off. Volcanic Steam is when a volcano lets steam out.
We turn the faucet and it's always there. CLEAN, SAFE AND ABUNDANT. Water, the essence of life. We use it every day, but we rarely think about the fact that A watershed is land that absorbs the water and carries it to the nearest water source. (seas,rivers) Malls,schools and homes cause pollution witch makes the water that the watersheds make not good and is gross. Also people throwing their trash into the water makes it nasty and ends up wasting the water because no one is going to drink water with trash in it. Tributaries all combine to make a main stem and Secondary Tributaries make up the Tributaries. The headwaters make it all start and cause them to make rivers and oceans.