I wrote a couple weeks back, with some questions on the "v4v4 1_Indoor Water Use Reduction Calculator."  I just discovered that the dwelling units will have two faucets, one for hand washing, and the other for filtered water.  The original intent was to have both systems tied to a single faucet, but the compatible unit had too high a flow rate for LEED.

My question is, how do I account for this on the calculator?  In the original design, the two systems could not be used simultaneously, and our guess is that would continue to be the case.  My guess is that the calculator accounts for bottle, and glass filling.  Do I need to modify the calculator in any other way, to account for the two systems?