How to know the water pressure is sufficient for RO/DI filter

[goodman123]

I interested to get the RO/DI filter. I get to know that the water going to the inlet must have around 1 to 3 bar pressure so that we wont waste that much water. Am I right? And how do we know what is the pressure of our water in our house before getting the booster pump. Please advise.

[ml708]

1 bar is approximately 14 psi and that would result in incredibly slow output and a lot of waste water. At about 3 bar I get approximately 1:1 ratio of water to waste water. It's recommended to run it at 60-70psi though. More efficient and TDS readings are optimal at the same time