Hacker News Reader

How many gallons of water do you have to throw away to get 1 gallon of pure water with this system?

Some companies have 1:1, gallon of clean to gallon of waste.

Here's one that's quite popular: https://www.theperfectwater.com/Home-Master-hydroperfection-...

Looks like 4 to 1. Not great, but probably not a huge hit if you hook it up only for drinking water. I wonder how hard it would be to pump that waste water to your toilet tanks instead.

Some people just let it gravity drain to another container (inside or out) and then use it for outdoor watering.

The flow rate & pressure is typically very low for the drain water with these systems, so you'd need another setup to handle pumping it to your toilet, etc.

Sending it outside is probably the easiest way to immediately use it.

Unfortunately some areas only have need for outdoor watering a few months of the year, so other uses might need to be found.

you can also pick an ro system with a permeate pump (https://www.purewaterproducts.com/articles/how-permeate-pump...)

proper inlet pressure also improves efficiency.

Reply on news.ycombinator.com