We have a project whose landscape meets the prerequisite “WE Outdoor Water Use Reduction” (it consumes 30% less water than the base case). On the site there is a non-potable water well prior to the construction of the building. We would like to use the water from the well for irrigation so we do not have to use potable water.

The ALTERNATIVE WATER SOURCES section of the LEED V4 Reference Guide (page 290) does not specify that well water is one of them.

Could we include the well water for irrigation as an “Additional reduction through alternative water source” and thus achieve 100% savings in potable water for irrigation?

Thank you so much.