Water

Public health will always be dependent upon a reliable supply of fresh, clean water. Maintaining this supply presents a steady stream of challenges to providers, as populations grow and many existing sources of water become stressed by overuse, contamination, and climate change. Utilities also now face increasingly stringent regulations and a public that is more educated on water quality issues than ever before.

Hazen and Sawyer can help you meet these complex challenges while, in many cases, improving efficiency and saving money. We’ve developed solutions for some of the country’s largest cities, including New York, Chicago, Detroit, Boston, Philadelphia, Cincinnati, Miami and Washington, D.C. – as well as for many smaller cities, towns and municipalities.

Treatment

Hazen and Sawyer combines innovative design with a constant focus on our customer’s needs to create successful projects. From the first-ever declining-rate filtration plant designed for Detroit back in 1966, to the world’s largest UV disinfection facility designed for New York City and currently under construction, our engineers and experts are working hard to meet our client’s toughest challenges.

Our designs have encompassed a range of process configurations, from the conventional coagulation/sedimentation/filtration approach to the most advanced high-rate clarification/filtration technologies available. In addition, we are THE experts in dissolved air flotation (DAF). From the first European-based DAF plant in the United States (Millwood, NY) through the world’s largest (290 mgd) DAF plant (currently under construction in New York City), Hazen and Sawyer has designed more DAF plants than any other firm.

In addition to addressing traditional surface water treatment goals, Hazen and Sawyer has helped providers meet increasingly stringent water quality standards. Projects have included plant upgrades, implementation of alternative disinfection approaches, and application of groundwater treatment processes. Our water treatment process experts are among the best in the business and have presented and/or published hundreds of papers.

Distribution

Hazen and Sawyer has helped a wide range of clients deliver billions of gallons of high-quality drinking water to their customers, assessing water distribution systems and designing repairs, upgrades and new infrastructure. Study scopes have ranged from relatively simple, one-source water systems, to multiple-source, multi-pressure zone systems with tanks, wells, pumping stations, and interconnections to adjacent communities.

Our engineers are experts in using state-of-the-art computer-aided hydraulic analysis tools, a wide range of pipeline materials and efficient technologies to create robust, reliable distribution systems. And by adding Systems Control and Data Acquisition technology to your system, we can optimize power consumption and demand charges, improve system reliability, and provide greater operating flexibility.

Supply

Hazen and Sawyer has performed water system supply and new source evaluations for clients ranging from huge metropolitan areas like New York City to more suburban areas like Wilson, North Carolina. As part of these studies, current and future water demands and supplies are evaluated, and the potential for development of new sources is considered, along with interconnection to neighboring public and private water systems, modifications to existing bulk sale agreements, and redevelopment of existing sources to increase self-reliance. The economic viability of different approaches and possible effects on customer rates are also assessed to determine the best approach.

Our water supply experience also encompasses design and construction management of dams, reservoirs, gatehouses, intakes, channels, wells, storage tanks, pumping stations, and pipelines.