Huh? water usage is a huge environmental issue. Only people far upstream really can say it’s not. We are amazing at not only diverting freshwater from streams and rivers, we’re also really good at pumping it out of the ground and diverting aquifer water from reaching downstream as well. While fresh water is largely renewable, it’s not like it’s an infinite resource and it’s very hard to see the long term effects of changes we’re making to our water shed. To say there’s no long term value in trying to reduce water usage is just wrong in much of the world. Worse, is drying up rivers and swamps can have an exascerbating effect. Dry soil doesn’t hold water nearly as well as wet soil, and results in greater risks of flooding from what would otherwise be typical rain patterns in an area.