INCURABLE WASTE (probabilities): Leaks in mains 1 - 2 Leaks in old and abandoned service-pipes 1 - 2 Poor plumbing, all taps metered and closely inspected 2 - 3 Careless and wilful wastes 1 - 2 Under-registry of meters 1 - 1 ------- Total incurable waste and under-registry 6 -10 ======== Minimum use and waste 40 -65 NEEDLESS WASTE: Leaks in street-mains (a guess) 15- 10 Leaks in service-pipes between houses and street-mains 15- 10 (a guess) Defective plumbing (a guess) 25- 15 Careless and wilful opening of cocks (a guess) 17- 14 To prevent freezing in winter and for cooling in summer 3 - 1 -------- Total needless waste 75- 50 ======== Total consumption 115-115 =157. Daily Domestic Consumption.=—The quantity assigned in the preceding statement to domestic use is confirmed by the abundant experience in other cities where services are carefully metered, as in Fall River, Lawrence, and Worcester, Mass., and in Woonsocket, R. I., where measurements by meters show that the domestic consumption has varied from 11.2 to 16.3 gallons per inhabitant per day. Furthermore, annual reports of the former Department of Public Works and the present Department of Water-supply for the City of New York show that during the years 1890 to 1898 such meters as have been used in the territory supplied by the Croton and the Bronx aqueducts indicate a daily consumption varying from 13.8 to 24.2 gallons per inhabitant per day. The same character of confirmatory evidence can be applied to the quantities assigned to manufacturing and commercial uses, city buildings and fires, street flushing and sprinkling.