August 26, 2025 | SPL announced today that Suburban Testing Labs (STL), acquired by SPL on November 8, 2024, is officially rebranding to SPL on September 1, 2025.

With this rebrand, SPL continues to strengthen its national environmental testing platform while preserving Suburban's longstanding commitment to clients in the Mid-Atlantic region. Suburban's Reading and State College, PA facilities and team remain fully in place, now operating under the SPL name with access to greater resources, expanded technical capabilities, and the backing of SPL's nationwide laboratory network.

Voices from Leadership

Colin Duncan, CEO of SPL, shared:
"The Suburban Testing Labs rebrand to SPL unites two organizations with shared values, strong cultures, and a focus on operational excellence-providing confidence today and expanding possibilities for tomorrow."

Rich Stump, President of Suburban Testing Labs and now Vice President of Operational Excellence for SPL, added:
"When we joined SPL in 2024, what made it so meaningful wasn't just the capabilities-it was the culture. We found a team that shares our passion for people, service, and doing the right thing. Together, we're stronger and better positioned to support the people and communities we serve. Our name is changing, but our commitment to you never will."

Andrew Parker Ph.D., President of Operations at SPL, emphasized SPL's support for regional impact:
"The Reading team is committed to supporting clean water, safer environments, and public health throughout the Mid-Atlantic region. Our goal at SPL is to scale their technical expertise and customer-first approach to as many communities as possible."

About SPL

SPL is one of North America's leading laboratories for energy and environmental laboratory testing, metrology, and data services. SPL is backed by Sentinel Capital Partners. Learn more about how SPL employees are advancing The Science of Sure® at www.spllabs.com.

About Suburban Testing Labs

Suburban Testing Labs, founded in 1963, is a full-service environmental laboratory specializing in water, wastewater, and solids analysis. Based in Reading, PA, Suburban has served thousands of clients across the Mid-Atlantic region for over 60 years.

Media Contact: Journee Strother ([email protected])