Fixtures & Water HeatersQuestion 196 of 360
Under CALGreen, a residential showerhead is generally limited to a maximum flow rate of:
a.2.5 gpm at 80 psi
b.2.2 gpm at 60 psi
c.1.8 gpm at 80 psi
d.0.5 gpm at 60 psi
Explanation
CALGreen limits residential showerheads to a maximum of 1.8 gallons per minute at 80 psi. Where multiple showerheads serve one shower, their combined flow generally cannot exceed the limit. This conserves both water and the energy to heat it.
Law Reference: 2022 CALGreen §4.303.1Practice all 360 questions free — no signup required.
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