The one consideration in ROs is that they require pressurized water to work.
If anyone has info on a non-electric, no water pressure required RO system, I would be interested in seeing it.
I asked mr mm for all the information he has on water purification.
We have a whole house filter that was a very reasonable cost that takes out almost anything. The source was some place down south that I suspect was a prepper place. It was a filter they had tested at work one time for someone and they got lots of water testing done on it to see how it works so we know it’s good. He was involved in the testing so knows. After that, we bought one, he was so impressed.
And then we got the RO filter loater.
When he gets me the info, I will be posting it here.