Have you heard of a system for RV campers that lets the user take long showers using the same filtered water over & over? Has anyone heard of or used such a set up? Any recommendations?
Here’s some of what I’ve found so far. Loopz: https://hamwells.com/en/loopz/
Overview of Our Recirculating Shower | RV Renovation Ryan & Su: https://www.youtube.com/watch?v=dhpBTra9bXs
Saves a lot of energy too, as you don’t need to reheat the water as much.
In professional swimming pools it is quite common to have heat exchangers on the outlet of the showers to recover the heat, but not the water.