NATURAL FLUORIDE CONTENT OF COMMUNITY WA

Excerpt from Natural Fluoride Content of Community Water Supplies, 1969 Service. This publication presents the results of this survey and serves to update a similar document published in The 1959 publication included all communities reporting at least one water source with a natural żuoride concentration of parts per million (ppm)2 or higher. This publication differs in that it lists all communities whose water supplies were reported to have a natural żuoride concentration of ppm or more regardless of the concentration of the various sources of water. This sur vey attempted to identify public water systems in the United States which naturally contain the minimum żuoride concentration recommended by the Public Health Serv ice as optimal for protection against dental caries. The Optimum concentration of żuorides in community water supplies depends upon the annual average of maximum daily air temperatures in the individual community. According to Public Health Service Drinking Water Standards, 1962, the recommended concentrations are shown in Table 1. 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.