Hazen and Sawyer develops practical solutions to water quantity and quality challenges around the globe. Backed by one of the industry’s most comprehensive and advanced applied research portfolios, our engineering and scientific teams work exclusively with water.

Founded more than 60 years ago by Richard Hazen and Alfred Sawyer, the firm traces its lineage to Allen Hazen, a pioneer in public health and hydraulics, and co-developer of the Hazen-Williams equation, critical to the design of water conveyance systems. Now with more than 50 offices to serve our clients around the world, our employee-owned structure and singular focus on water anchors our practice of forward-looking, independent thinking.

At Hazen and Sawyer, we strive to pinpoint the best solution to every challenge, often with innovative approaches developed through partnerships with the communities and businesses we serve. Our decades-long client relationships are a testament to our company-wide commitment-placing our clients’ interests first.