Water Supply City water is supplied from the Sprain and Grassy Sprain, supplemented by a system of tube wells, the latter having been accepted by the city in March, 1900, at which time their capacity of supplying 1,000,000 gallons per day was demonstrated. When the rapid growth of the village made imperative the establishment of a water–works system the citizens committee engaged the services of William W. Wilson as Chief Engineer, and General George S. Green as Consulting Engineer. After a careful examination of the Pocantico, the Nepperhan, and the Bronx water sheds both eminent authorities agreed that the waters of the Sprain and Grassy Sprain would not be so apt to become impure, through pollution of the valleys, as would the other streams. An analysis of the waters, made by Professor Charles F. Chandler, Ph.D., M.D., was followed by a most favorable report as to their purity. The Lake Avenue Reservoir (capacity 3,600,000 gallons) was first constructed, being completed in 1874. The Grassy Sprain reservoir (capacity 400,000,000 gallons) was next constructed; then the Fort Field reservoir (capacity 60,000,000 gallons). The Lake Avenue and Elm Street water towers are each four hundred and fifty feet above the Hudson River, and supply the higher levels, the overflow of which are on a level with each other. The city is engaged in increasing the water supply by an enlargement of its tube well plant on the Sawmill River Road, but by far the most important departure in regard to the water supply in recent years has been the purchase of about fifty acres of land, and a dam and pond already built at Woodlands, on the Sawmill River, for the sum of $50,000. It is proposed to connect this supply with the present system by an iron conduit which will be about five miles long. There are eighty–four miles of water mains, 857 hydrants, and 5,200 taps and connections now in use. Private families, as well as factories, receive city water measured by meters, the cost to the former being fifteen cents per hundred cubic feet, and the manufacturing industries are supplied at greatly reduced rates. The average daily consumption of water is 3,700,000 gallons. The Yonkers waterworks supplies the city of New York with the water consumed in the Riverdale, Spuyten Duyvil, and Woodlawn sections of that city. The cost of the Yonkers waterworks to date has been $1,626,000, and the city owes $1,475,000 on their account, and has a sinking fund for the redemption of water bonds of $360,972.68. The Presidents of the Water Board since its origin have been: Stephen Barker, Isaac H. Knox, Ethan Flagg, Rudolf Eickemeyer, William H. Doty, and John C. Shotts. The Board is at present constituted as follows: Joseph H. Beall, President; William H. Doty, Treasurer; Michael Walsh, Joseph Miller, and Patrick J. Flannery. William Henry Baldwin is Chief Engineer.