Dependable wastewater treatment systems are necessary to protect public waterways and drinking water supplies. Yet the ability to meet new regulatory and service demands often conflicts with the constraints of aging wastewater infrastructure, outdated technologies and tightening budgets. More than ever, industries, municipalities and regional authorities alike are looking to maximize collection system capacity and integrity, improve treatment levels and efficiencies and even transform treated wastewater and solids into reusable resources.

 Metcalf & Eddy provides comprehensive services that meet clients' needs for environmental protection, cost effectiveness, compliance and operational dependability. We conduct infiltration/inflow studies, evaluate sewer systems, prepare facility planning and financial feasibility reports and conduct pilot plant studies. Our full-scale treatment plant projects range from simple primary systems to secondary treatment facilities including activated sludge, trickling filters and pure-oxygen activated sludge treatment, and advanced treatment plants featuring nitrification-denitrification, multimedia filtration, carbon absorption, two-stage plastic media trickling filtration and land application. We are responsible for over 60 wastewater treatment plants (new facilities or major upgrades) in the last 10 years alone.

Technical criteria and design manuals developed by M&E for the U.S. Environmental Protection Agency have helped establish the company as an internationally recognized leader in this sector. Our wastewater textbooks, including Wastewater Engineering: Treatment and Reuse, published by McGraw-Hill, serve as the principal teaching and reference resources for thousands of practicing professionals worldwide.