Excerpt from Mechanical Filtration for Municipal Water Supply American water supplies are noted for their great volume, but are very often of such a quality as to greatly endanger the health of the people. L .an*r of the largest American cities are supplying their people with water which, to say the least, is of doubtful purity. It is an acknowledged fact that many severe epidemics of disease, especially typhoid fever, have been caused by polluted water. Undoubtedly many such epidemics have been attributed to other causes when they have, in reality, been the results of an impure water supply. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.