GLOBAL WATER TECHNOLOGY, INC. ACQUIRES ENERSTAR, INC., ADVANCING PROPRIETARY FIELD ENABLEMENT AND SCALABLE TECHNICAL CAPABILITIES

Posted May 18, 2026

FOR IMMEDIATE RELEASE

Strengthens GWT’s technical and operational capabilities within its Water & Energy Services platform
Enhances service consistency and execution for clients operating across multiple locations
Integrates Enerstar’s experienced team and trusted client relationships into GWT
Expands applied technology and technical resources available to customers
Supports GWT’s strategy of disciplined, capability-driven national growth

Calumet City, Illinois, May 18, 2026 — Global Water Technology, Inc. (“GWT”), a leading national provider of industrial water treatment, energy services, and specialty chemical solutions, today announced the acquisition of Enerstar, Inc., a technically driven water and energy services firm known for disciplined execution and strong client partnerships.

The acquisition includes Enerstar’s proprietary field enablement platform and related intellectual property, which GWT will integrate into its national operating model. Developed to support consistent technical execution, capture institutional knowledge, and enhance field-level decision-making across complex client environments, these capabilities represent a differentiated asset designed to improve technical consistency, accelerate knowledge transfer, and support scalable service delivery across GWT’s organization.

“This acquisition reflects our focus on building durable capability, not just adding size,” said Michael Byerley, Chairman & CEO of Global Water Technology. “Enerstar has developed tools and processes that improve how work is executed in the field. Integrating those capabilities into GWT allows us to elevate technical consistency, accelerate knowledge transfer, and support long-term scalability across our organization.”

As part of the transaction, Pat Carew will continue with GWT in a senior technical leadership role as Technical Director, Field Technology & Enablement. In this role, Mr. Carew will be responsible for advancing applied field technology and integrated water treatment solutions that improve system performance, service quality, operational visibility, and client outcomes across GWT’s Water & Energy Services platform. He will work closely with GWT’s technical, operational, and support teams to design, deploy, and scale practical, field-ready solutions that combine chemical feed and control strategies, mechanical and pure water systems, monitoring capabilities, and data-driven tools.

In addition, the transaction includes patented intellectual property focused on improving how water is monitored, managed, and optimized in high-intensity water-using facilities. These capabilities are intended to support more disciplined control, improved performance, and better decision-making in complex operating environments, and will be developed and governed alongside GWT’s broader field technology and enablement initiatives.

Beyond technology and intellectual property, the acquisition also creates Enerstar’s ability to service existing clients that operate facilities beyond Enerstar’s current regional footprint. Through GWT’s established national service platform, those clients may now benefit from consistent technical standards and service continuity across additional locations.

“Enerstar has always focused on building practical tools that support strong outcomes for clients,” said Mr. Carew. “Joining GWT allows that work to be scaled thoughtfully within an organization that values technical rigor, long-term relationships, and continued investment.”

Enerstar will operate as part of GWT’s Water & Energy Services organization, with key personnel remaining in place to support continuity of service, client relationships, and ongoing development of the platform. GWT plans to continue investing in the Enerstar team and its intellectual property as part of its broader capability-driven growth strategy.

For more information, please contact GWT at info@gwt-inc.com or 708-349-9991.

About Global Water Technology, Inc.:

Global Water Technology, Inc. (GWT) is a second-generation, Minority-Owned national provider of industrial and commercial water treatment solutions, delivering customized, results-driven programs that help organizations operate smarter, more sustainably, and with greater confidence. Founded in 1990 to meet the growing demand for reliable, personalized water treatment services, GWT has built a strong reputation on decades of hands-on experience, deep technical expertise, and a people-first approach.

GWT partners with clients across a broad range of industries—including manufacturing, healthcare, commercial real estate, hospitality, data centers, food and beverage, and new construction—to design and implement solutions that reduce water and energy usage, extend system life, improve reliability, and provide enhanced visibility into performance. The company’s service portfolio includes custom treatment programs for cooling towers, steam boilers, closed loop systems, wastewater applications, and on-site analytical and training support, backed by advanced, data-driven tools and technologies.

Recognized repeatedly on the Inc. 5000 list as one of America’s fastest-growing private companies, GWT combines local expertise with national scale. With regional offices, laboratories, and distribution centers across the United States, the company’s growth is driven by long-term partnerships, strategic acquisitions, and relentless focus on delivering measurable results for clients.

At GWT, the mission extends beyond treating water—by investing in innovation, nurturing technical talent, and protecting one of the world’s most valuable resources, the company works to create sustainable operational value for its clients and the communities it serves.

For more information about GWT, please visit our About Us page.

About Enerstar, Inc.:

Enerstar, Inc. is a specialized provider of industrial water treatment services based in Elmhurst, Illinois, known for its practical, technology-driven approach to solving complex water management challenges for commercial and industrial clients. Founded in the late 1980s, Enerstar has focused on delivering responsive service, disciplined field execution, and customized solutions that improve operational performance, regulatory compliance, and overall system reliability.

With deep technical expertise and a commitment to innovation, Enerstar has developed proprietary tools and processes that support consistent, high-quality service delivery and long-term client partnerships. The company’s field service infrastructure and client base span a diverse set of industrial applications, with a reputation for solving tough water treatment problems and driving meaningful operational outcomes.

For more information about Enerstar, please visit Enerstar’s website HERE.

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