199 



in 1897, and states the pumpage in gallons per day, the popula- 

 tion, and pertinent data concerning the systems in discussion. 

 The population is that reported by the census of 1890, and the 

 figures for 1897 would show a considerable increase owing to 

 the rapid growth of the urban population in the vicinity of 

 Chicago during the past decade. The second part of the table 

 includes the smaller cities with water-works but without de- 

 veloped sewage systems. These do not contribute to the stream 



Population and Pumpage in Cities with Sewage Systems. 



City 



Population in 1890 



Daily Pumpage 

 in gal. 



Remarks. 



Illinois 









Aurora 



19,688 



1,338,570 



Combined sewage system 



Chicago 



849,850 



520,275,109 



Population 1,099,850, from 

 which 250,000 was de- 

 ducted for area of City 

 draining directly into 

 Lake Michigan. Pump- 

 age is that at Bridge- 

 port. 



Elgin 



17.823 



1,143,488 



Combined sewage system 



Hinsdale 



1,584 



124,000 





Joliet 



23,264 



2,500,000 



Part separate, part com- 

 bined systems. 



Kankakee 



9,025 



1,200,000 





LaGrange 



2,3H 



223,609 



Combined sewage system 



La Salle 



9,855 



1.503.835 





Lemont 





600,000 



Population not given in 

 1890 apart from that of 

 township. 



Mendota 



3-542 



205,479 



Separate sewage system. 



Ottawa 



9,98S 



5 1 1 ,000 



Sewage system incompl't. 



Pekin 



6,347 



750,000 



" " " 



Peoria 



41,024 



5,000,000 





Peru 



5-550 



216,183 



Sewage system incompl't. 



Pontiac 



2,784 



750,000 



Pumpage estimate re- 

 duced from 2,000,000 

 gal. 



Streator 



n,4H 



2,000,000 





Utica 



1,094 



720,000 



Water supply from ar- 

 tesian wells. 



Watseka 



2,017 



150,000 



Pumpage estimated. 



Wheaton 



1,622 



70,000 



Sewage system incompl't. 



Wisconsin 









Waukesha 



6,321 



500,000 



Separate sewage system. 



Indiana 









La Porte 



7,126 



747,788 





Total 



1,032,229 



540,529,061 



Total pumpage, 442.17 cu. 

 ft. per sec. 



