FOR IMMEDIATE RELEASE
Sentinel Water Solutions and DESOTEC Announce Partnership to Provide NSF-Certified GAC Reactivation Services
[State College, PA] — [August 25, 2025] – Sentinel Water Solutions (Sentinel), a leader in PFAS pilot testing and treatment, today announced an exclusive channel partnership with DESOTEC, one of the world’s leading providers of sustainable activated carbon solutions, to deliver NSF-certified granular activated carbon (GAC) reactivation services for U.S. drinking water utilities.
This collaboration builds on DESOTEC’s 2023 acquisition of Evoqua’s carbon reactivation and exchange services business, significantly expanding its U.S. reactivation network and capacity. With this agreement, utilities in the U.S. now have expanded direct access to NSF-certified reactivation backed by Sentinel’s turnkey logistics & field services.
Closing the Loop on GAC Disposal
By reactivating spent GAC rather than sending it to landfill, utilities avoid disposal costs and the regulatory uncertainty associated with PFAS waste management. This “reactivation-as-a-service” approach reduces PFAS treatment costs and environmental impact while providing a compliant, sustainable alternative to single-use carbon.
“With the pending EPA PFAS regulations, utilities need sustainable, cost-effective, and regulatory-compliant solutions for GAC management,” said Andrew Strassner, President of Sentinel. “By combining Sentinel’s field service expertise with DESOTEC’s industry-leading reactivation technology, we can help utilities reduce costs, minimize environmental impact, and keep their systems online with minimal downtime.”
Through the partnership, Sentinel will serve as DESOTEC’s exclusive drinking water reactivation supply partner for municipal markets, managing the entire process— from vessel swaps and traditional media exchanges to NSF-certified reactivation at DESOTEC’s facilities and stock management.
Reactivation-as-a-Service Benefits
- NSF-Certified Drinking Water GAC Reactivation – Meets the most stringent U.S. treatment standards.
- PFAS-Focused Solutions – Designed for compliance with current and pending EPA regulations.
- Turnkey Media Exchange & Vessel Swaps – Removal, transport, reactivation, stock management, and reinstallation handled entirely by Sentinel.
- Sustainability & Cost Savings – Minimize waste, reduce operating costs, and cut carbon footprint versus virgin carbon replacement.
“This is more than a supply agreement — it’s a partnership built around utility success,” said Michael Brooks, DESOTEC CCO. “Together with Sentinel, we’re making it easier for utilities to close the loop on GAC use, stay ahead of PFAS regulations, and adopt more sustainable operations.”
With more than 35 years of experience, DESOTEC operates service hubs and reactivation facilities across the United States and Europe, supporting thousands of customers in over 24 countries. In the United States, DESOTEC is currently active from its sites in Darlington (PA), Parker (AZ), Red Bluff (CA), and now Houston (TX) – building a nationwide network to deliver fast, flexible environmental solutions wherever they’re needed.
About Sentinel Water Solutions
Sentinel Water Solutions provides advanced treatment systems for the removal of PFAS and other emerging contaminants from drinking water. With a focus on turnkey solutions, Sentinel partners with utilities, engineers, and contractors to improve water quality, compliance, and operational resilience. Further information is available at www.sentinel-h2o.com.
About DESOTEC
DESOTEC, founded in 1990, is the leading provider of mobile filtration solutions in Europe and is establishing this leading market position in the United States. Thanks to its unique, flexible, circular service concept and the extensive expertise built up over many decades, DESOTEC unburdens its industrial customers and helps them to make their operations or products more sustainable. DESOTEC’s customer base is constantly growing thanks to a strong focus on 24/7 service and a commitment to design and deliver the best solution in close dialogue with the customer. DESOTEC has about 450 employees, who are all committed to help protect the planet by driving positive ecological change across all industries. Private equity funds managed by Blackstone acquired DESOTEC in 2021. Further information is available at www.desotec.com.
Media Contact:
John Van Buskirk
Business Development Director
Sentinel Water Solutions
888-811-PFAS
sales@sentinel-h2o.com
FOR IMMEDIATE RELEASE
Hershey, PA, October 2024:
Contact:
Andrew Strassner, President, Sentinel Water Solutions
Tom Klein, VP of Product Engineering, Sentinel Water Solutions
Sentinel Water Solutions launches a unique approach to PFAS treatment for small- to mid-sized facilities.
New technology safely speeds implementation and reduces costs
Sentinel Water Solutions has introduced a comprehensive new technology to perform pilot tests, design full scale treatment, and operate treatment systems for PFAS to significantly reduce both operating costs and capital expenditures.
Traditional approaches to PFAS testing and treatment involve lengthy and extensive pilot studies followed by the implementation of systems that are expensive to build and operate. By leveraging their patent-pending technologies, packaged treatment systems, and flexible operating models, Sentinel Water Solutions is able to extend media life, reduce operating costs, and make the implementation of PFAS treatment as seamless as possible for water utilities. Sentinel offers a complete turnkey solution to PFAS treatment including piloting, permitting, design, installation, and operation with flexible financing options.
Tom Klein, VP of Product Engineering for Sentinel Water Solutions noted, “While other companies are in the business of selling portions of PFAS treatment projects that still place much of the design, construction, and operating burden on utilities, we’re in the business of selling a performance goal through a single, comprehensive offering. It’s simple. You give us a site with PFAS. We get rid of your PFAS problem. And we’ll do it quickly, safely, and cost effectively.”
Andrew Strassner, President of Sentinel added, “Our team has been removing PFAS from drinking water dating back to 2016, and through the years we’ve experienced this challenge from multiple vantage points, leading to the creation of the unique services being offered by Sentinel. We will continue building on our experience and helping our partner utilities reduce costs while improving compliance through technology and innovation.”
In pursuit of CAPEX and OPEX savings, Sentinel employs patent-pending technologies for pilot studies and full-scale treatment that are designed to maximize media life and reduce ongoing operating and maintenance costs. Unlike traditional lead-lag filtration systems, Sentinel’s patent-pending PFAS Roughing Filter™ systems are designed to ensure GAC and IX media isn’t wasted before being completely utilized. Sentinel’s approach also reduces the need for onsite media changeouts and backwashing. Sentinel provides optional turnkey operations of their flexible packaged treatment system which can be leased or purchased by utilities depending on their budgetary constraints. Sentinel’s turnkey operations include system health, sampling, and compliance services to make PFAS treatment as hands-off as possible for the water utility.
About Sentinel Water Solutions, LLC.
Sentinel Water Solutions, LLC. is a division of Keystone Clearwater Solutions, LLC. Sentinel was formed by Keystone Clearwater in partnership with Constructive, Inc., an online marketplace for the procurement of water utility technology and services. To address the challenges faced by small to mid-sized water utilities with PFAS contamination issues, Keystone Clearwater and Constructive launched Sentinel Water Solutions to meet the need for fast, economical PFAS treatment solutions.
Sentinel’s leadership team has worked for or served water utilities for the past 20 years with 62 years of combined municipal water industry experience, and backgrounds in mechanical engineering, environmental engineering, construction management, geology, operations, and finance. They’ve also successfully completed multiple turnkey PFAS projects such as the installation of 2,500 gpm GAC pressure vessels for NJ American Water with design, procurement, installation, and commission taking place in under 6 weeks. They also provided design-build services for an emergency PFAS treatment system at a military base in NJ, providing a turnkey solution that was online in under 40 days. The team’s experience lends itself to Sentinel’s mission of helping utilities tackle PFAS contamination quickly and cost-effectively.