FURTHER CLASSIFICATION 



195 



Bringing together the averages from three tables, we have 

 in the following a summary of the average results indicated by 

 the statistics, arranged in convenient form: 



Further Classification. In the collection of statistics, the 

 Committee of the New England Water Works Association 

 further subdivided each of the three main classes into two 

 or three sub- classes, making eight classes in all. If full statis- 

 tics for each of these subdivisions were available from all 

 completely metered systems, something that in water works 

 would correspond to a life-line in life insurance could be pre- 

 pared that would have considerable value in making estimates 

 of this kind. Owing to the limited number of returns re- 

 ceived too much significance is not to be attached to this. 

 However, the following brief summary may be helpful : 



Thirty-five systems reported. These systems had 524,636 

 services and 520,719 meters. They were thus almost completely 

 metered. 



The daily output, estimating roughly, for three systems 

 where sales are reported, but not the total output, is about 

 300 million gallons, or 575 gallons per service daily. Of this 

 quantity about 140 gallons per service is not accounted for. 



The following table gives an approximate distribution in- 

 dicated by the data received, arranged by total numbers in 

 each class, for those systems for which reasonably complete 

 reports were available. 



