J. A. Judson, Popular Science Monthly (1879)
“ As fair water is at once a prime necessity and a priceless blessing, so foul water is a scourge and curse; nor will any but a sewage-rectifying enthusiast hesitate for an instant which to choose, provided he has the means of knowing one from the other. Gross pollution is sensible to the sight, the taste, the smell, and we instinctively revolt; lesser pollution, though perhaps not apparent to any of the senses, yields its secret to the chemist's skill ”
