It is my understanding that chlorine is only used temporarily, when there is a problem with bacteria in that region. I found the site below which seems to support this. In any case, wouldnt you be able to smell and taste chlorine?
In Europe, other alternative disinfectants are currently used for drinking water disinfection (table 1). France, for example, mainly uses ozone which was introduced in 1906 as a water disinfection agent. Italy and Germany use ozone and chlorine dioxide as primary oxidants and disinfectants. England is one of the few European countries that use chloramines as a residual disinfectant in the distribution network and the disposal of disinfection by-products. Finland, Spain and Sweden use chloramines for disinfection only occasionally.
It wont kill a majority of humanity. I think you are one of those people who finds it easier to imagine the end of the world (through climate change) than to imagine the end of capitalism (through collapse of the US empire). The latter is whats actually happening, but propaganda doesnt want you to know that.
@Elara@lemmygrad.ml Fyi your bot replied 5 times in this thread.