iSi has two operating divisions: iSi Environmental and iSi Industrial Services. iSi Environmental provides environmental, health and safety consulting for EPA and OSHA regulations, and facilities support services which help companies with those tasks which aren’t core to their business such as hazardous and non-hazardous waste management and wastewater treatment plant operation. iSi Industrial Services provides hands-on industrial and maintenance services to help companies keep their operations running smooth and assist them through times of renovation and new construction.