As an industrial chemist of 50 years I am constantly amazed by people with little understanding of chemistry who go into writing on a subject, that they are obviously passionate about, but either, through their lack of understanding of the subject or by inadvertent or deliberate misinformation, lead to confusing the reading public.
The author quotes from the Safety Data Sheets supplied by the manufacturer of 'Calcium Hypochlorite' which is the same dry powder chlorine many people use to disinfect their swimming pools with virtually no side effects.
The nasty safety aspects they list only apply to the concentrated dry powder.
In the swimming pool and the water supply the product is so dilute that none of these concerns apply.
To illustrate the point concentrated Hydrochloric acid is highly corrosive but when diluted is the acid produced in our stomachs to digest our food. The author erroneously refers to the product as 'chlorine' which it is not; however the disinfectant has the characteristic odour of chlorine.
In addition, whether or not it was a typographical error one of the product names refer to it as 'hydrochlorous acid '(which does not exist) the correct term is 'hypochlorous acid” and while this may appear as 'nit picking' the spelling of chemicals is very precise as the change of one letter can refer to an entirely different compound with properties ranging from benign to fatal. As an example, sulphite, sulphide and sulphate are all different compounds of sulphur.
Last but not least, the article goes on to acclaim 'Anolyte' as a safer method of disinfectant, however Anolyte is a brand name of the same, hypochlorous acid, produced in solution by a different means: but the sterilising agent is the same.
Without a doubt chlorination via hypochlorous acid is the cheapest most effective form of water pathogen treatment and has been used for close to 100 years around the world.
The majority of the negative hype is scaremongering to frighten the uneducated.