U S Liquids, Inc. provides liquid waste management services. The company’s Commercial Wastewater segment provides a variety of environmental services; and collects, processes, and disposes nonhazardous liquid waste, such as industrial wastewater, bulk liquids, and dated beverages. Its Industrial Wastewater segment collects, processes, and disposes hazardous and nonhazardous waste, such as household hazardous wastes and industrial wastewater. The company has principal executive offices in Houston, Texas.