For thirty-seven years we have noted with regret the gradual increase in the pollution of our river, in fact the increase has been quite rapid during recent years. During that time the inhabitants on the banks have increased three-fold while the amount of pollution that is put into the river has increased probably three-thousand-fold. A third of a century ago the Chlorine as Chlorides was three parts per million, the normal amount for unpolluted water in this region; now it is ten. A half a century ago when the Cedar Rapids water works were first built, raw water was put into the mains and for twelve years used for drinking water by a large per cent of the inhabitants.
Proceedings of the Iowa Academy of Science
©1927 Iowa Academy of Science, Inc.
Bates, C. O. and Hendricks, H. R.
"Cedar River at Cedar Rapids, Iowa,"
Proceedings of the Iowa Academy of Science, 34(1), 77-83.
Available at: https://scholarworks.uni.edu/pias/vol34/iss1/10