Garratt-Callahan

Garratt-Callahan Company is a premier provider of industrial water treatment solutions, recognized as the largest privately-owned company of its kind in North America. Established in 1904, the organization has built a century-long legacy of expertise in maintaining and optimizing water systems for a diverse range of industries, including healthcare, food and beverage, manufacturing, and government facilities. Headquartered in Burlingame, California, Garratt-Callahan operates a nationwide network of ISO 9001:2015 certified manufacturing facilities and analytical laboratories, ensuring the highest standards of quality and compliance.

The company specializes in comprehensive water treatment programs designed to enhance the efficiency and longevity of critical equipment such as boilers, cooling towers, and reverse osmosis systems. Garratt-Callahan leverages advanced technology through its proprietary G-C LumiTrac® and G-C SolidTrac® systems, which offer real-time monitoring and precise chemical control to prevent scale, corrosion, and biological fouling. Their commitment to sustainability is evident in their water-saving techniques and eco-friendly product lines, helping clients reduce their environmental footprint while meeting stringent regulatory requirements.

Garratt-Callahan distinguishes itself through a client-centric approach, emphasizing direct access to experienced field engineers and technical experts. The company’s service model focuses on proactive maintenance and customized solutions that address the unique challenges of each facility. With a strong corporate culture rooted in fairness, honesty, and integrity, Garratt-Callahan continues to lead the industry by delivering reliable, cost-effective, and safe water treatment strategies that protect both infrastructure and human health.