There will be shower police.
They are coming to your city or town
Here where I live they have a division of the police department that drives around and hands out citations to make you paint or roof your house, fix broken screens, mow your lawn, fix and paint your fence, ect. They can enter a rental house and make you make improvements to plumbing that an inspector can't.
The complaint can become Criminal if the citation is not taken care of in 30 days.
It is some kind of International Housing Code that the city adopted.
They will most likely start giving citations for multiple shower heads.