In the short survey I sent out a few days ago for IPD, I asked students to guess how many gallons a typical 10 minute shower uses.
Corey Cavicchi, Olin’s Associate Plant Manager, has informed me that Olin shower heads have a 2.5 gallon per minute flow (the maximum federal regulatory standard since 1994), but that facilities is “planning to install 1.5 GPM shower heads over Thanksgiving break.”
Based on this information, an average 10-minute shower uses 25 gallons of water now, but will use only 15 gallons of water after the anticipated change.