Why is there chlorine in pools?

Question

Why is there chlorine in pools?

Answer 1

The chlorine kills the bacteria and germs. It basically sterilizes the water.

Answer 2

It kills the bacteria and makes the water safe to swim in.

Answer 3

For cleanliness. It kills germs.

Answer 4

It kills bacteria which can create mildew, and generally cleans the water from sweat, dirt, and other germs.

Answer 5

All pools need chlorine because it kills germs and keeps it clean. Bleach is a kind of chlorine but not as good as the real stuff. (it also keeps the water clear along with pH.)