Dual Shower Heads in Luxury Hotel Suite

There is not a maximum number of flowing fixtures allowed. However, to follow the intent of the credit I'd recommend that you augment the credit form to account for the fact that any showers taken in the presidential suite will actually be more like multiple showers. It might be as easy as bumping up the total daily uses. Are the showers throughout the building 2.5 gpm or just in the presidential suite? There may be a LEED interpretation about this but I don't see anything in the Water Use Reduction Additional guidance.

I'd add a description for your LEED reviewer and either bump up the total daily uses or create a separate "fixture group" for the presidential suite. I found this LEED Interpretation but it was for LEED for Homes: Inquiry: How should the shower flow rate be calculated if there are two fixtures serving one stall? Ruling If one stall has two fixtures that cannot be operated simultaneously (e.g., a showerhead and a handheld wand where only one can be operated at one time), the flow rate for the purposes of the credit should be the higher of the two. If one stall has two fixtures that can be operated simultaneously (e.g., dual showerheads that can both be operated at the same time), the flowrate for the stall is the sum of both fixtures.