Now, with a new president in office, the Energy Department is going back to a standard adopted in 2013, saying it provides plenty of water for a good soak and a thorough clean.
The rule change will have little practical effect, since nearly all commercially made showerheads comply with the 2013 rule — the pet peeve of the former president notwithstanding.
The Energy Department said the action clarifies what’s been happening in the marketplace. Showers that provide the extra supply of water desired by Trump are not easily found, officials said.
Since 1992, federal law has dictated that new showerheads should not pour more than 2.5 gallons (9.5 liters) of water per minute. As newer shower fixtures came out with multiple nozzles, the Obama administration defined the showerhead restrictions to apply to what comes out in total. So if there are four nozzles, no more than 2.5 gallons total should come out among all four.