I would not classify chlorine and fluoride as the same group as heavy metals… While it sounds dangerous, it’s hard to argue there isn’t a net positive to use fl

I would not classify chlorine and fluoride as the same group as heavy metals… While it sounds dangerous, it’s hard to argue there isn’t a net positive to use fluoride and chlorine to society when it comes to water distribution. Also to note, there is nothing particular special of Berkeley filters compared to other carbon filter, and it does not filter heavy metals (you typically need ion exchange filter for that). The company has a bunch of filter claims and state that they haven’t gotten the NSF certification because of cost reasons but I find it really hard to believe that is the case.