That's not the end of my shower-related shenanigans. I have also hacked this shower head to remove the flow restrictor (bottom left) thereby allowing it to dispense more than 2.5 gallons of water per minute, making it ILLEGAL (don't tell anyone) https://awoo.space/media/TVaoGSW7UzkVHrxL_fQ
@gravecat Some manufacturers tried to get around it with "shower towers" - a longer pipe with multiple shower heads connected, each one individually obeying the law, but they ruled against that, saying the law applied to the whole unit.
The EPA only regulates the sale of the shower heads though, not their use, so some companies make compliant shower heads with easy instructions on how to remove the regulator.