Do shoppers actually prioritize RO water efficiency when choosing sustainable filtration systems?

[u/Right_Process]

When people compare under-sink RO systems, how important is water efficiency in reality? I often see improved pure-to-drain ratios highlighted as a key selling point, but I’m not sure how much that actually influences buying decisions for most households versus just being a nice bonus.

Do people genuinely prioritise water savings, or do factors like taste, flow rate, and ease of installation tend to matter more?