Cholrine is used widely in the UK to disinfect our water, whilst it travels around our water supply. The chlorine kills any bacteria, and makes it potable to drink. The dead bacteria is in solution, and considered harmless to drink.
Chlorinated chicken, is chicken that has been rinsed in chlorine to kill surface bacteria, and is currently available in the U.S. but banned from EU countries. After leaving the E.U. and trading may begin with our friends across the pond, chlorinated chicken may become legal, and this has caused uproar.
My personal view is that chlorine in any form, is a poison and we should try our best to to reduce contact where possible. We should not be bathing it, we should not be washing our food