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centrated mass containing from SO to 90% of water: there is not as much 

 odor to septic tank sludge as to the fresh sludge from the plain settling 

 tanks. 



The above outlines the principal methods of sewage disposal. It must 

 however be borne in mind that the proper method is wholly decided by 

 local conditions. Care must be exercised in order that the various factors 

 affecting the problem be carefully considered. 



A fuller realization of the sewage disposal problem is being evidenced 

 throughout the country as the years go by. both by the state and health 

 officers and city officials. The State has done a great deal of preliminary 

 work in the way of sanitary surveys and this work should be heartily 

 indorsed and commended. However, there is still much to be done, and 



Fig. 



Water Fowl in Stream. Julietta. Ind.. 100 Feet Below Sewage Plant. 



Photo taken 2 years after plant was installed. Formerly all waterfowl 



died from drinking water. 



undoubtedly some method of maintaining public control of the streams 

 will have to be devised before the question of pollution can be properly 

 taken care of. 



There are so many different factors entering into this question that 

 the best solution can only be worked out with a proper organization which 

 will take into consideration every phase of the question and which can 

 reach every district, affected, whether this territory be in one or more 

 States. The state authorities should be given the power to pass upon 

 every sewage disposal problem and they should have the proper means and 

 support for doing this. 



