In general when anyone brings up clean air and clean water in the same breath as Climate Change, you know they are either a fool or a liar. The two have nothing to do with each other.
Whatever we want to debate about greenhouse gases is fine and legitimate, but let us understand first (I am talking to you, Party of Science!) that greenhouse gases are primarily CO2 and water vapor. Water vapor doesn't pollute water or air. Nor does CO2.