We are the largest firm in the United States that is solely dedicated to water related engineering - it is all we do. Our targeted expertise helps our clients protect public health and the water environment with cost-effective, innovative, and reliable solutions.

Carollo is an industry-leading dynamic, multi-faceted firm providing innovative, environmentally sustainable solutions for water and water-related problems. We recruit the brightest minds in the industry, we train and incentivize our staff to deliver quality service, we lead our industry with innovative ideas fostered by our Carollo Research Group, and we develop cost-effective solutions tailored to the specific needs of our clients. Because of this, clients across the United States repeatedly look to Carollo to help them find the best solutions to their most complex challenges.