Montrose Environmental

Montrose Environmental Group provides air quality management, environmental testing, water treatment, remediation, and laboratory analytical services for industrial, governmental, and commercial clients. Based in Irvine, California, Montrose is recognized for its role in project delivery, regulatory consulting, and environmental data analytics throughout North America. The company complies with EPA, ISO 9001, state, and industry-specific standards, and actively manages risk related to safety, vendor oversight, and reporting accuracy. Services extend to source emission testing, site investigation, groundwater treatment, chemical remediation, and ongoing monitoring, supporting clients in energy, manufacturing, utilities, and public infrastructure. With over 2,800 employees, Montrose operates a network of laboratories and field offices, offering turnkey solutions for ESG and regulatory compliance, PFAS management, and site closures. The company reported annual revenue of $631 million in 2025, reflecting robust demand for expert services amid tightening U.S. environmental regulations and the growing need for sustainable business practices industry-wide.