Anyone heard of natural swimming pools before? They are self-cleaning and have no chlorine or salt, just plants and friendly algae. Cost seems like the biggest issue, although there's less ongoing costs without the need for chemicals and pumps. Sounds fantastic. See https://www.domain.com.au/living/natural-approach-the-swimming-pools-free-from-salt-and-chlorine-201...
Hmmm. how do they treat the not so friendly Bacteria, Toxin and Decaying matter?
If there's no chlorine, pumps, proper filtration, moving water,flotation & sedimentation tanks, and Water Purifying Management Systems that Water Engineers use etc,etc
Maybe they should give a health risk warning to those with compromised immune systems? Like "Swim at own risk"
Dept of Health WA Publication How safe are natural water ways