4e3eafac_ell_Water_Treatment_Strategies__What_it_does
[Treatment process] Disinfection [Contaminants Removed/Altered] Kills microbes, or in the case of ultraviolet, prevents multiplication [What it does] 
Adding a disinfectant (chlorine, ozone, ultraviolet light) kills or disables microbes to make water safer to drink.
Well Water Treatment Strategies
What it does