O6 Environmental Services
Hazardous waste management and environmental remediation services.
| Date | Investors | Amount | Round |
|---|---|---|---|
* | N/A | Growth Equity non VC | |
| Total Funding | 000k | ||
O6 Environmental, LLC is a specialized provider of environmental solutions, serving private, state, and federal sectors across the United States. Founded in 2014 and headquartered in St. Louis, Missouri, the company offers a comprehensive suite of services that includes site remediation, industrial cleaning, demolition, and hazardous and industrial waste disposal. It also provides 24/7 emergency response for spills and other urgent environmental incidents.
The company's business model centers on delivering end-to-end management of the environmental service lifecycle for clients in the utility, manufacturing, government, energy infrastructure, and construction markets. O6 Environmental is a Service-Disabled Veteran-Owned Small Business (SDVOSB) and its executive team's military background is noted as a key factor in its operational approach. The firm focuses on building long-term, programmatic relationships with clients, which provides visibility into recurring remediation needs and enhances revenue predictability. Operations involve leveraging advanced technologies for soil and groundwater remediation, high-pressure water jetting, hydro excavation, and the compliant transport, treatment, and disposal of waste at licensed facilities.
In August 2023, O6 Environmental acquired Illini Environmental, an EPA-permitted waste management company, expanding its capabilities in waste solidification, wastewater treatment brokering, and industrial cleaning in the Midwest. This followed a significant investment from Warren Equity Partners in June 2022. More recently, in August 2025, private equity firm Quad-C Management invested in O6 Environmental to support the expansion of its geographic footprint and service offerings. The company is led by CEO Dan Giesler.
Keywords: environmental remediation, hazardous waste disposal, industrial cleaning, demolition services, emergency spill response, soil remediation, groundwater remediation, waste management, site remediation, environmental services, hydro excavation, tank cleaning, hazardous materials management, contaminant removal, waste transportation, industrial waste, solid waste management, liquid waste management, disaster response, environmental compliance