ABSTRACT OF PROCEEDINGS. XXV11. 



which has been much used by engineers of late, can now 

 be replaced in most committees by an allowance of 25 

 gallons per capita daily for domestic use, and that half of 

 this amount is a possibility where meters are in general 

 use. But here tabulated statistics must not be applied 

 without judgment, for obviously it is unjust to compare a 

 mill town in Western Pennsylvania, having no lawns, few 

 sewers, and where poverty or economy reigns, with a 

 suburb of New York or Chicago, having wide lawns, 

 thorough sewage, and the elaborate plumbing of prosperous 

 homes. ,, 



The consumption per head per day of the British towns, 

 for domestic purposes, only ranges from 15'29 gallons, at 

 Birmingham, to 34 gallons at Glasgow, the average being 

 23*26 gallons, used to indicate that about 25 gallons is 

 sufficient where meters are in use, and if to this be added 

 say 20 for purely trade purposes, and 15 gallons for public 

 purposes, it would bring the total up to 60 gallons per head 

 per day for all purposes, which, under the proposal formu- 

 lated by me, Sydney would have in 1925, 8 years hence, 

 rising to 71 gallons per head in 1947, 30 years hence. I 

 hope Mr. Cardew, after this explanation, will admit that 

 my estimate is not merely guesswork, and that it is a 

 reasonable one under our present conditions. 



Mr. Oardew refers to my statement that I had to rely 

 upon spot levels, on the catchment area, made by Mr. 

 Surveyor Lee with an aneroid barometer, for the purpose 

 of ascertaining whether the sites for dams upon the area 

 could be connected by tunnelling. I was not aware that 

 any further work had been done here until Mr. Corin 

 informed me at the last meeting that a very complete 

 hydrographic survey of the whole catchment area has, 

 during recent years, been carried out by the Works' 

 Department. 



