Our Company
Decades of specialized experience in cleanroom construction and performance testing drive a standards-driven approach to creating predictable, certified environments for clients across the globe.
Decades of specialized expertise
A Legacy of Global Expertise in Cleanroom Performance and Support
Our History
Founded in 1999 by Jeff Jimmo, One Source Environmental draws on decades of specialized experience in cleanroom construction, mechanical systems, and performance testing across industries nationwide.
Our Approach
We take a customized, standards-driven approach to cleanroom testing and certification—aligning industry requirements with each facility’s unique processes to ensure reliable performance and long-term environmental control.
Certifications, Partners & Associations
Our professional certifications and industry memberships reinforce our commitment to maintaining the highest standards in cleanroom testing, performance verification, and contamination control practices.
Locations Served
One Source Environmental supports cleanroom projects worldwide, providing specialized testing, certification, and technical expertise to clients across the United States and international markets.
“One Source Environmental has consistently delivered excellent results and is a standout talent in the Cleanroom Certification business.”
Eric Gray, F.H. Chase, Inc.
Vice President
News & Recent Projects
Where Expertise Meets
Real-World Results
Explore the latest updates, industry insights, and project case studies from our team. Our blog shares real-world cleanroom solutions and perspectives drawn from decades of experience supporting controlled environments across a range of industries.
Let’s talk about your cleanroom requirements. We know the questions to ask!
Whether you’re planning a new space, preparing for certification, or addressing performance challenges, OSE is here to help. Our team is ready to support your next step.