Not only does chlorination help prevent the spread of infections such as E. coli, it also destroys bacteria, algae and mold that can grow on the walls of water storage systems, and it removes unpleasant tastes and odors from drinking water. While chlorination is effective at sanitizing drinking water, it can be difficult to handle without expertise and experience. The chlorination of water used for showering, laundering and swimming can dry out the skin and hair, may cause eye irritation and can also fade fabrics.