BAILEY AND BARTOW : CITY WATER-SUPPLIES. 24 1 



ated on the border of the city park, in a wooded ravine, above 

 the high-water line, northeast of the city. The Neosho at this 

 point runs nearly east, and the banks are well wooded and 

 high. 



The water is drawn from the river by a fourteen-inch pipe, 

 and then forced into the city mains through Jackson filters, 

 sometimes after being treated with a little alum to act as a coagu- 

 lant. The amount of alum used depends on the turbidity of 

 the water. The sand in the filters is cleaned by reversing the 

 current of the water as often as the pressure shows that this is 

 necessary. About 250,000 gallons is pumped in twenty-four 

 hours, although the capacity of the plant is four times that 

 amount. 



As the population of the city is not very large, and so many 

 of the citizens use the water of wells and cisterns, the demand 

 upon the water company is not very great. The experience of 

 the company in regard to purification of the water is, that any 

 amount of coagulant will not clarify the water at certain stages 

 of turbidity. 



Three samples of water were taken ; the first from the pipe 

 that draws the water from the river, the second from the pipe 

 as it conveys the water to the city, and the third from the 

 service pipe in Kingman's drug store. 



SANITARY ANALYSIS OF OSWEGO WATER-SUPPLY. 



Sample taken May 2, 1903. 



Neosho Filtered Service 



Parts per million. river. water. pipe. 



Total solids 430 320.4 312.8 



Loss on ignition 18 20.7 15.1 



Chlorin 7.23 6.80 7.08 



Free ammonia 098 .030 .020 



Albuminoid aoimonia .418 .234 .184 



Nitrogen in nitrates 415 .881 .314 



Nitrogen in nitrites 000 .000 .000 



Oxygen consumed 5.67 3.12 2.90 



Hardness 164.4 165.8 163.1 



A consideration of these analyses shows the following : 

 1. The total solids or mineral matter is reduced twenty-seven 

 per cent, by the process of filtration. If alum is not used, it is 

 practically the suspended matter which is taken out. It will 

 be noticed that the amount of total solids is not very different 

 from that at Chanute, more than fifty miles further up the 

 stream. 



