On that topic... US federal regulations[0] limit shower heads to a flow rate of 2.5 gallons per minute (GPM). And California[1] limits them to 1.8 GPM! This seems somewhat analogous to the mobile data discussion.
"You are paying for a water service, what does it matter how the water is consumed?" Though of course there are big differences. An obvious one is that water companies aren't profiting off these restrictions like mobile operators at least partially are. And since water is either heavily regulated by or entirely ran by governments, the cost to the consumer doesn't necessarily represent the true cost.
(The California restriction even seems reasonably well enforced. When buying a 2.5 GPM shower head on Amazon[2] you'll get an error if you try to ship it to a California address. Most eBay sellers enforce this as well, though not quite all of them.)
"You are paying for a water service, what does it matter how the water is consumed?" Though of course there are big differences. An obvious one is that water companies aren't profiting off these restrictions like mobile operators at least partially are. And since water is either heavily regulated by or entirely ran by governments, the cost to the consumer doesn't necessarily represent the true cost.
(The California restriction even seems reasonably well enforced. When buying a 2.5 GPM shower head on Amazon[2] you'll get an error if you try to ship it to a California address. Most eBay sellers enforce this as well, though not quite all of them.)
[0] https://www.federalregister.gov/d/2020-27280/p-56
[1] https://www.build.com/ca-compliant/c133273#:~:text=Residenti...
[2] https://smile.amazon.com/showerhead-2.5GPM-that-wont-ship-to...