This is outdated as most of the mfgs have gotten better at it. Mine is 1:1 drinking:waste and my monthly water consumption is barely affected as it's indiscerni

This is outdated as most of the mfgs have gotten better at it. Mine is 1:1 drinking:waste and my monthly water consumption is barely affected as it's indiscernible in the noisy variation. First 4 links on Amazon I'm seeing 2:1, 2:1, 3:1, 3:1