Private property rights and a streamlined legal system is all that is necessary to protect the environment. If Corporation A is polluting water that feeds into drinking water. The citizens should have the ability to sue that corporation and have their suit be fair and quick. That would stop pollution quickly as the threat of legal action would prevent companies from polluting. Also it should be noted that the EPA dumped so much waste in the Colorado River that the river turned Yellow. So the EPA isn't even that good at protecting the environment.