SCHEDULE OF QUANTITIES 



201 



This indicates sales of 2.56 million gallons per day and 

 an output of 3.59 million gallons per day, equal to 80 gallons 

 per capita, or about one- half of the present rate of output. 



So great an immediate reduction is not to be anticipated, 

 and a consumption between that and the present consumption 

 for a few years must be anticipated. However, the extra quan- 

 tity is to be expected in water that cannot be accounted for 

 and not in amounts sold, and the figures as reached may be 

 used for the estimate. 



The schedule of quantities sold under each of the rates can 

 be estimated as in Chapter XVI, in tabular form. 



These figures may be used in the study of the required rates 

 as above described. It will be safer, however, before making 

 the calculation to diminish the amounts estimated for domestic 

 and intermediate sales by from 5 to 10 per cent on account of 

 the uncertainty of the basis of the estimate. As the manufac- 

 turing takers are already nearly all metered there is less uncer- 

 tainty in regard to them and no reduction need be made. 



The whole estimated quantities will be reduced by this pro- 

 cedure by about 6 per cent and the rates will be made propor- 

 tionately higher because of it. There will be then a chance 

 that after the rates have been tried out in actual practice, more 

 revenue will be produced than is needed and that they may 

 be reduced. 



Statistics. In trying to make estimates of probable sales 

 under the meter system for a system not yet metered, the follow- 



