Here comes the heavy artillery: chlorine, chloramine, or ultraviolet light. This step is non-negotiable because despite all the filtering, a few hardy bacteria and viruses might still be partying in the water.
Chlorine is the old reliable—it kills germs on contact and leaves a tiny residual in the water to protect it all the way to your house. Yes, that faint “pool smell” is a good sign. It means the water is safe, not contaminated. Ironic, right?
Drinking Water Treatment Process at Sandra Slavin blog
