CHAPTER 11 



Polluted Water Can Kill You 



DEFINITIONS 



SOURCES OF WATER 

 Dug wells 

 Driven wells 

 Springs 

 Cisterns 

 Reservoirs 

 Lakes 

 Rivers and streams 



TREATMENT OF DRINKING WATER 



SWIMMING POOLS 



ICE AS A POTENTIAL AGENCY IN DISEASE TRANSMISSION 



COMMON DRINKING CUPS AND PURLIC DRINKING FOUNTAINS 



BOTTLED WATER 



STANDARD BACTERIOLOGICAL TESTING OF WATER 



An examination of maps will disclose that most large cities are lo- 

 cated where they are because an abundant water supply, among 

 other things, was available. When sanitary engineers are confronted 

 with the problem of determining bow large a reservoir should be to 

 accommodate the projected growth of a community, the figure of 

 one hundred gallons of water per capita is a usual consideration. 

 This does not mean that each individual needs this volume of 



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