Assuming a standard 2.5gpm flow rate, even if water is free, that's a lot of energy use for a hot shower. 2,250 gallons of water per month on daily showers, ass

Assuming a standard 2.5gpm flow rate, even if water is free, that's a lot of energy use for a hot shower. 2,250 gallons of water per month on daily showers, assuming a 60/40 split for hot/cold means heating 1,350 gallons of water per month for just one person. That's either expensive, bad for the environment or both, and not something Californias should aspire to do.