As Hazen marks its 75th anniversary, we do so with deep gratitude for the partnerships and trust that have shaped our firm since 1951. This milestone is not just about the years behind us, but about the communities we have served and the challenges we have solved together. Our longevity reflects the loyalty of our clients and the incredible dedication of our staff.
Although we are the industry’s largest firm focused exclusively on water, we remain employee-owned and committed to a culture of collaboration. That culture keeps us focused on what matters most: delivering technical excellence and putting our clients first.
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Years of Impact
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Communities Served
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Regional Hubs
75 years of impact is only possible through the trust of our clients and the dedication of our people. We are deeply grateful for the partnerships that continue to shape who we are.
As we honor our history, we remain focused on the future. We continue to foster an entrepreneurial spirit that empowers our professionals to deliver practical solutions that protect public health and the environment for generations to come.
Built on 75 years of engineering excellence, we remain committed to solving the water challenges of the future.
