Operational for over 60 years, Brown and Caldwell has been operating as a full-service environmental engineering and consulting firm. Located in Tucson, Ariz., it offers customers a wide range of solutions in the categories of business consulting practice, environmental services, information technology, solid waste and water resources. Some of this includes total asset management, risk assessment, hydrogeology/groundwater modeling and watershed management/source protection. In addition, the company provides waste water services, such as odor/corrosion control, disinfection and industrial pretreatment. Brown and Caldwell serves municipal, federal and private agencies.