Transactions of the American Society of Civil Engineers, Vol. LXXII, June, 1911water Purification Plant, Washington, D. C. Results of Operation.

''Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911'' is a scientific publication from the early 20th century. The volume focuses on the operation and results of the water purification plant in Washington, D.C., specifically detailing the methods, machinery, and efficiencies observed during its five years of operation. This document serves as a critical resource for civil engineers and professionals in the field of water treatment, aiming to share valuable insights and statistics regarding water filtration processes. The opening of this publication introduces a paper by E. D. Hardy on the Washington filtration plant, highlighting its extensive infrastructure, including pumping stations and multiple sand filters. Hardy summarizes the plant's capabilities and operational achievements, emphasizing the importance of water clarity, especially in relation to turbidity levels in the Potomac River. The text provides a wealth of technical detail, including descriptions of the machinery, methods for sand management, and water testing results, which collectively serve to illustrate the ongoing challenges and successes in providing clean drinking water to the city. The opening effectively sets the stage for in-depth discussions and analyses that follow in subsequent sections.