To improve water quality by requiring the use of water treatment systems.
For Part 3, remove: "to remove microbial cysts". Add: "to remove or reduce microbial cysts"
Remove: "or showers/baths"
In Part 2a, remove "Filter rated to remove suspended solids." And replace with "Filter rated to remove suspended solids with pore size 1.5 µm or less."
In Part 3b, remove "NSF filter rated to remove" and replace with "Filter rated by the NSF to remove"