Here in Washington state they tax you to have a rain barrel! Not enough rain water here I guess!!?? They claim that the rain that you took would otherwise have gone into the ground and fed the creeks that hold the salmon, lead to drinking water reservoirs or to water wells. So it is basically stealing.
Of course most folks have a rain barrel in order to water their gardens - so the water still makes it back to the ground. No mater WHAT one does with the water, it makes it back into the natural water cycle somehow.
Next up - a tax on sunlight and wind!
“Here in Washington state they tax you to have a rain barrel!”
And next door, in BC, they subsidize rain barrels and cisterns.