Why do they want to use ...
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
Why do they want to use chlorocyanurates instead of sodium hypochlorite? WHO has a guideline but it would be most useful for spot treatments in emergencies or in some remote areas where hypochlorite is not readily available. Of course you can also make some hypochlorite on site with some salt and a bicycle driven generator with an electrolysis unit.
Chlorocyanurates are convenient and stable, but expensive compared to chlorine bleach and difficult to apply since they are solids. They are good in pools because they are slow release and less susceptible to solar reactions. You should also understand that there are multimilligram amounts of the cyanuric acid residues in the drinking water.
Hydrogen peroxide is not very potent compared to chlorine and slow acting and more expensive. Also, not proven as a broad spectrum biocide in drinking water.