All categories of sewage are likely to carry pathogenic organisms that can transmit disease to humans and other animals; contain organic matter that can cause odour and nuisance problems; hold nutrients that may cause eutrophication of receiving water bodies; and can lead to ecotoxicity.

There is no reason why good cannot triumph as often as evil. The triumph of anything is a matter of organization. If there are such things as angels, I hope that they are organized along the lines of the Mafia.