Many American scientists are worried about the drinking water in the United States. They think that soon there may be no more clean drinking water. Dirt,salt,and chemicals from factories can get into the water, making it unsafe to drink. This is alredy true in some places. One example is a small town in Massachusetts. Many children in this town became sick because of chemicals in the water. Another place with water problems is California. The water near old air force airports is not safe to drink. Chemicals from rockets got into the ground and then into the water.