114 HALIFAX WATER WORKS. JOHNSTON. 



in the Chezy formula. In a report 011 the water system of St. 

 John, N". B., it was found, by experiment, that the co-efficient 

 to use there was 65. For new pipe this should be about 120, 

 so that the discharge from their 24-inch main laid in 1873 

 Avould be a little more than one-half that of a new pipe. The 

 24-inch and 15-inch in Halifax have been cleaned regularly 

 twice a year for some time, although the usual fall cleaning 

 was omitted last year on account of the lowness of the water 

 in the lakes ; but from an inspection of the condition of the 

 pipes where cut this yearj the above co-efficient of 65 is con- 

 sidered much too low for the mains of the Halifax water- 

 works system, and 80 would be nearer the mark, although this 

 is considered a .minimum. However, assuming 80 to be 

 applicable, the amount of water flowing into the citv on the 

 8th of January, 1906, was 3,288,600 gallons through the 24- 

 inch main, 4,294,000 gallons through the 27-inch main, and 

 1,600,000 gallons through the 15-inch main, or a total of 

 7,582,600 gallons for the low service and 1,600,000 for the 

 high, or 9,182,600 for the whole city. The day was mild and 

 there had been but little frost for some days previously. There 

 are 19,000 consumers 011 the low service and 16,400 on the 

 high. This would mean an average consumption for all the 

 water takers of 260 gallons per capita per day, or 399 gallons 

 per capita on the low service and 98 gallons per capita on the 

 high. 



Our population as given by the last four census returns is as 

 follows : 



1871 29,582 1881 36,100 



1891 38,437 1901 40,332 



The figures for per capita consumption were given for the 

 actual number of consumers. The better and usual practice is 

 to give the per capita consumption for the total population as 

 there may be some industries using large quantities of water, 

 the employees of which may not be using water for domestic 

 purposes. The figures given above would show a consumption 



