Here in Michigan, my water price is also about 5% of my electric bill. Which is also small, we barely used the AC this summer.

Water billing here is (frustratingly) not progressive: the first thousand gallons costs the same as the tenth or hundredth thousand gallons. It's cheap, we're surrounded by fresh water on the surface and you can stick a well down through 80-100 feet of glacial sand and gravel and get drinkable water basically anywhere.

I was surprised to learn that 70% of my township's municipal water is used by only 15% of the households: basically, those that irrigate their lawns daily.

Why should it be progressive if it's not even scarce there? Why are you trying to punish people unnecessarily?