32 



Kansas Academy of Science. 



mains. Ground-water supplies are generally quite satisfac- 

 tory where a sufficient quantity is available, though the deep- 

 well waters of southeastern Kansas are not so acceptable as 

 some, on account of the large amount of sulphureted hydrogen 

 contained. 



The total number of cities in the state having waterworks 

 is 187. There are only seven cities having a population of 

 over 1000 that are without waterworks. There is none having 

 a population over 2000 without such plants. 



TABLE OF CITIES HAVING WATERWORKS. 



12 with a population over 



16 

 20 

 23 

 55 

 61 



10,000 



of 5,000 to 10,000 



3,000 to 5,000 



2,000 to 3,000 



1,000 to 2,000 



under 1,000 



TABLE OF CITIES IN KANSAS HAVING SEWER SYSTEMS. 



Census of 1911. 



cities of over 

 " 5,000 to 

 " 3,000 to 

 " 2,000 to 

 " 1,000 to 



city under 



10,000. 

 10,000. 



5,000. 



3,000 . 



2,000. 



1,000. 



total population, 



'320,211 



113,311 



63,908 



38,515 



25,467 



763 



81 Total population, 562,175 



TABLE GIVING CITIES IN KANSAS HAVING NO SEWER 



2 cities of 

 7 

 44 



53 



SYSTEM. 



3.000 to 5,000 total population, 6,491 



2.000 to 3,000 " " 15,213 



1,000 to 2,000 " " 61,631 



Total population, 83,334 



There are 50 sewage-treatment plants in the state, purify- 

 ing the sewage from 40 cities. There are 22 septic tanks 

 operating alone, and 3 Imhoff tanks and 25 septic tanks 

 operating in connection with contract filters. 



To-day 87 per cent of the Kansas people living in towns hav- 

 ing a population over 1000 have the privilege of connecting 

 with sanitary sewers. 



In comparison with other states, Kansas ranks sixth in the 

 number of towns sewered and fourth in the number of sewage- 

 treatment plants in operation. This and the number of water- 

 works installed go to show that Kansas is one of the leading 

 states in modern sanitary practice. 



