During our 75-year history, Carollo has successfully completed more than 15,000 projects for public sector clients. Carollo is currently ranked within Engineering News Record's top 100 design firms. More importantly, ENR's annual Source Book ranks Carollo among the top firms for water and wastewater treatment plant design. Unlike our competitors, Carollo provides only water and wastewater engineering services. We recruit nationwide and hire technical staff who have extensive background and training specific to this field. For that reason, the quality and professional standing of our core group of wastewater and water professionals equals or exceeds that provided by some of the largest engineering firms in the country.
Carollo's staff numbers more than 761 employees including, over 442 registered engineers. We are a full-service company with the experience and qualified professionals to successfully manage projects of any size. Our staff includes civil, sanitary, environmental, electrical, mechanical, chemical, structural, control systems, and corrosion control engineers, as well as architects, planners, and specialists in other areas. Consultants are retained as needed in specialized fields depending on the specific needs of the project. Carollo also has total computer resources to complete any engineering effort, including an expanded local area network (LAN) within each office, as well as a wide area network (WAN) between our offices to better facilitate communication, document transmittal, and workload sharing.