"Update October 20, 2016: Campus projects may continue to utilize a wastewater treatment facility located outside of the LEED project boundary as long as it is within the campus boundary for Option 2 in WEc2: Innovative Wastewater Technologies. Treated water must be infiltrated or used on-site by the project. The only change to this ruling is that the campus treated wastewater can also apply in WEc3: Water Use Reduction, if reused in the project’s flush fixtures. See the updated “Water Use Reduction Additional Guidance” document.
Original ruling April 1, 2013:
Yes, campus projects may utilize a wastewater treatment facility located outside of the LEED project boundary as long as it is within the campus boundary for Option 2. Treated water must be infiltrated or used on-site by the project.
Please note that a campus scale wastewater treatment facility located outside of the LEED project boundary would be considered a municipally supplied non-potable water source for all other Water Efficiency credits, and would not be considered an on-site non-potable water source in WEp1 Water Use Reduction. Applicable Internationally."