philh wrote:
TechWriter wrote:
Plus, you can plumb an RO system so that the waste water goes back into your water tank so there's no waste.
no issues with the "dirty" water going back into the tank?
Not really. RO systems have multiple stages: typically 2 or 3 filters (sediment, carbon block, etc), then the RO membrane itself, and finally post filters like "water polishing" or adding minerals.
The waste water or brine comes from the RO membrane so the water has already passed through filtration that most RVers use anyway.
If anything, the RO brine is hard water, not "dirty". TDS (Total Dissolved Solids) levels in ppm are usually used to measure RO system water quality. For example, one of my measurements was . . .
- "Fresh" (incoming) water: 242 ppm
- RO treated water: 34 ppm
- RO Brine: 202 ppm
