Garratt-Callahan Company

Chemicals Water Treatment Wastewater and process water. Garratt-Callahan Company is a national water treatment company.Garratt-Callahan Company provides custom water treatment solutions based on a century of experience and a company-wide commitment to customer satisfaction. We solve water quality problems swiftly and effectively. But the true value of our expertise lies in preventing problems before they occur. We help you protect your investments in equipment and facilities while controlling your energy and maintenance costs. We ensure your peace of mind — and your success.