dilution is NOT the answer to pollution. Its the answer we give ourselves to pacify our conscience. Not creating the pollution in the first place is the correct answer. It reminds me of smokers toothpaste. The guy is all racked up, near death from smoking, but hey his teeth are pretty. Here in Washington state, there is basically no freshwater locations that pregnant women or children, can eat the fish from, and only a small amount for a healthy adult. I really like my old truck, but it is such an environmental pig. I can justify taking it out for a couple of short jaunts once a week or so, but as a daily driver I feel it would be rather irresponsible. This however is MY OPINION, feel free to agree or not. Sorry if I got a little off the topic, but at some point we as a species (human) will have to confront this issue head on.