. Health in home and town. however, may not fill the of health are beginning to recognize a possi-ble danger from thissource. Some cities require alicense for dealers engaged in selling such water. Othercities forbid the use of the bottles for any other pur-pose, and examine both the water sold and the sourceof the supply. Drinking Water from Lakes or Natural Reservoirs. —Many large cities make use of lakes as natural rain that falls on a certain watershed finds its wayby means of brooks, rivers, and other streams into anatural lake. A dam is built across the
. Health in home and town. however, may not fill the of health are beginning to recognize a possi-ble danger from thissource. Some cities require alicense for dealers engaged in selling such water. Othercities forbid the use of the bottles for any other pur-pose, and examine both the water sold and the sourceof the supply. Drinking Water from Lakes or Natural Reservoirs. —Many large cities make use of lakes as natural rain that falls on a certain watershed finds its wayby means of brooks, rivers, and other streams into anatural lake. A dam is built across the outlet, turningit into a natural reservoir. A large water-pipe or con- THE CITY WATER AND ICE 187 duit carries the water from the reservoir to the care must be taken that the water is not pollutedby people living on the shores of the lake, or on thearea drained into the lake. A city often purchases theshores of the lake and as much of the drainage area aspossible. In this way, many of the large cities in the. Croton Dam, holding back Water for the Supply of New York eastern part of the United States, such as New York,Baltimore, Boston, Worcester, Springfield, Newark, andothers, obtain their supply of water. On the Pacificcoast, reservoirs are used, but they must be large enoughto hold a supply for two or three years. Croton Water of New York. — Ever since 1842 theCity of New York has been supplied with water fromthe Croton River. The water-pipe or aqueduct crossesthe Harlem River on an arched bridge, called HighBridge, which is one of the notable features of the city. 188 HEALTH IN HOME AND TOWN In 1890 a larger aqueduct carrying 300,000,000 gallonsof water per day was built. To obtain this amount adam was built across the Croton River, holding backthe water in times of flood, and forming Croton time to time, as more water was needed, othersmaller dams have been built across tributariesof the Croton River, forming a series of smaller reser-voirs, all o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsanitat, bookyear1912
