Carollo Engineers, Inc

Carollo Engineers, Inc

Carollo Engineers, Inc

Carollo Engineers is an environmental engineering firm that specializes in the planning, design, and construction of water and wastewater facilities. The firm was founded in Phoenix, Arizona, in 1933 and counts the City of Phoenix among one of our original clients—a working relationship more than 80 years old! From that single office with three engineers, Carollo has grown to more than 600 people in 38 offices throughout the United States. Our staff includes civil, structural, electrical, mechanical, environmental, and instrumentation and control engineers, as well as scientists, planners, architects, and CAD designers.

Company details

2700 Ygnacio Valley Road, Suite 300 , Walnut Creek , CA 94598 USA
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Business Type:
Engineering service provider
Industry Type:
Water and Wastewater
Market Focus:
Nationally (across the country)
Year Founded:

This company also provides solutions for other industrial applications.
Please, visit the following links for more info:

Cities, utilities, and special districts of all sizes count on Carollo to help them navigate through the increasingly complex challenges of cost-effectively and sustainably protecting public health; meeting local, state, and federal regulatory requirements; protecting the water environment; and addressing public expectations. Our core philosophy for success is to work collaboratively with our clients to find the best ways to protect and enhance our public water supplies and our lakes, streams, rivers, and oceans.

We recognize that water sustains life on this planet and clean, safe water sustains healthy ecosystems and healthy communities. Our employees are proud of our role in making the communities that we live in, work in, and serve, better places to live. We continually strive to emulate our mission statement: 'Dedicated to creative, responsive, quality solutions to those we serve.'

Carollo is one of the largest firms in the United States dedicated solely to water-related engineering – it’s all we do. This targeted expertise allows us to focus on developing cost-effective, innovative, and reliable solutions to help our clients protect public health and overburdened water supplies. It also allows us to recruit the brightest minds in the water industry, train our staff on the issues impacting water, and lead the industry with innovative ideas tailored to the specific needs of our clients. Indeed, Carollo’s Research Group, a dedicated team of scientists and engineers from across the country, has been responsible for discovering new treatment technologies, improving operations practices, and expanding the science of water use and reuse. Because of this, clients across the United States repeatedly look to Carollo to help them find the best solutions to their most complex challenges.

Carollo is guided by a culture of teamwork and integrity. Embracing the firm’s rich history and solid reputation for offering professional excellence, our employees have a shared mission to provide exceptional service to our clients. We are dedicated to overcoming challenges, seizing opportunities, and Working Wonders With Water®.

Our Core Values
  • Integrity – We aspire to the highest degree of personal and corporate integrity. We value honesty, trust, and respect in our interactions with each other, our clients, our business associates, and our community.
  • Teamwork – We value cooperative, collaborative teamwork where all team members contribute to the success of the organization.
  • Excellence – We value the excellence of our employees and strive to recruit and retain the best and brightest people in the water industry.
  • Innovation – We value the innovation that can solve our clients' most difficult water-related problems.
  • Organizational Health – We value that which is in the best interest of the company as a whole. This guides our single profit center business model that promotes sharing resources and leveraging technical expertise across the company, all with the long-term goal of maintaining a vital, growing, and profitable organization.

Sustainability is meeting human needs within the limits of our natural world. Sustainability is employing processes that fit into nature’s ecosystems, which provide the services and resources upon which we all depend. Carollo is cultivating a sustainable environment by harnessing its employees' passionate, creative energy to implement innovative, sustainable solutions. What’s the result? A healthier planet and improved performance for our clients.

Click here to visit our Sustainable Solutions Service page to see how we are applying sustainability concepts for our clients.

Client Solutions

Sustainability begins with how we make decisions and identify solutions. Our approach is tailored to fit the client’s needs and goals, but typically encompasses the basic tenets of the triple bottom line: long-term cost savings, improving community amenities and relations, and protecting/restoring the environment. Not only do we take a multi-faceted approach to decision-making, but the solutions we recommend for our clients are often multi-disciplinary in nature, reaching across traditional engineering boundaries to achieve sustainability for the future.

Here is a sampling of the sustainable services and example strategies that Carollo is implementing for our clients: