Go to any local pond here in Colorado Springs or Denver look at all the filth there, broken glass, trash, walmart bags, old bait containers, McDonalds and BK trash. You name it, its there. I dont think that statement has any merit. HUmans are gross, messy, lazy creatures they destroy alot more then they take care of. I wouldnt want all that crap laying around a lake that was going to be treated for water that would be coming out of my drinking fountain. Yes natural run off adds contaminants but those are usually from man to I've worked community service in a water treatment plant before it sucks working there and the chemicals they add are designed to treat the contaminants they get. New contaminants mean new chemicals which means different taste and more money. This is one of the reasons water tastes different no matter what part of the country you go to because they all use different chemicals for the different contaminants of that part of the country.IceInTheVeins said:As for it being the last place in the water works before we drink it, it's the last place in the water works before it goes into the TREATMENT PLANT. Using water quality as a reason to restrict access also is groundless. So many natural contaminants enter the system from ambient wildlife and from surface runoff, and it is thousands of times greater than anything any anglers, even messy ones, could introduce. And the treatment plants take care of all these contaminants that occur naturally. So water quality protection isn't a valid reason either.