Garratt-Callahan Company
A Century of Water Treatment Expertise
Now in our second century of service, Garratt-Callahan is more than an experienced industrial water treatment company. We’re a company of experienced professionals, from our field engineers to our technical service departments. Our client relationships are built on fairness, honesty, and integrity. By thoroughly understanding your needs and challenges, we can then roll up our sleeves to find solutions that work.

Garratt-Callahan Mission & Values
Together, we’re focused on the same mission that has guided Garratt-Callahan for over 100 years. Our client receive:
- Effective, efficient, and safe water treatment.
- Unrivaled customer service and we promise complete customer satisfaction.
- Dependable industrial water treatment programs that minimize risks, deliver peak performance, and lower costs.
Culture
What Our Employees Say About Working at Garratt-Callahan
“After 30 years here, I still feel like I make a difference.”
“It’s my home away from home. I’ve been with Garratt-Callahan for so long it feels like it’s partly mine.”
“I like the freedom – the expectation and the trust that I’ll do my job as best as I can.”
A family-founded, privately held company, Garratt-Callahan’s corporate culture honors the hard work and dedication of all its employees. Together, we contribute to the success of our company; together, we share in the rewards, job-satisfaction, work-life balance, and family is important to all of us as well as keeping it all in perspective.
Our business culture is informed by our water treatment expertise and our dedication to customer service built on the firm foundation of experience. With an average of 10-15 years of experience in the water treatment industry, Garratt-Callahan’s nationwide network of field engineers are seasoned professionals. They’re backed by our equally experienced technical and analytical service departments, and by a dedicated group of administrative and support personnel.
Careers
As a matter of both tradition and policy, we value the hard work and loyalty of all Garratt-Callahan employees. We appreciate that it is our people who sustain our company and account for its success.
In hiring, we seek similarly committed employees, and our compensation plan is designed accordingly. Benefits include a 401k plan as well as health, vision, dental, life, and disability insurance.
We offer employees stability, an honest and ethical work environment, a competitive wage, and for sales people– unlimited commission potential.
We are always on the lookout for exceptional candidates with experience in water treatment sales and service and a strong background in the sciences or engineering. In addition, we occasionally have openings in technical, administrative, and support positions.

Search among Garratt-Callahan Company jobs
| Jobs: 1 - 10 of 18 |
Water Treatment Chemical Service Technician at a Data Center - Remote
Moncks Corner, South Carolina
Water Treatment Chemical Service Technician- Charleston, SC A Water treatment Chemical Technician will be responsible for working at a customer's data center in the Charleston, SC area. The Chemical Technician will solve customer water trea...
12h
| Job Type | Full Time |
Water Treatment Chemical Service Technician at a Data Center - Remote
Charleston, South Carolina
Water Treatment Chemical Service Technician- Charleston, SC A Water treatment Chemical Technician will be responsible for working at a customer's data center in the Charleston, SC area. The Chemical Technician will solve customer water trea...
12h
| Job Type | Full Time |
Chemical Service Technician for Data Centers - Remote
Sheboygan, Wisconsin
Chemical Service Technician for Data Centers-Milwaukee, Wisconsin Our 2025 Sales were the Largest Growth in Decades. 2026 YTD Sales are even Better. We need to Hire! A Water treatment Chemical Technician will be responsible for working at c...
12h
| Job Type | Full Time |
Chemical Service Technician for Data Centers - Remote
Fond du lac, Wisconsin
Chemical Service Technician for Data Centers-Milwaukee, Wisconsin Our 2025 Sales were the Largest Growth in Decades. 2026 YTD Sales are even Better. We need to Hire! A Water treatment Chemical Technician will be responsible for working at c...
12h
| Job Type | Full Time |
Chemical Service Technician for Data Centers - Remote
Milwaukee, Wisconsin
Chemical Service Technician for Data Centers-Milwaukee, Wisconsin Our 2025 Sales were the Largest Growth in Decades. 2026 YTD Sales are even Better. We need to Hire! A Water treatment Chemical Technician will be responsible for working at c...
12h
| Job Type | Full Time |
Technical Sales Industrial Water Treatment - Remote
Bowling Green, Kentucky
2025 was a Record Sales Year. And 2026 is trending to be Even Better. A new opening: Technical Sales Territory Manager for a Bowling Green, Kentucky territory. Sell boiler and cooling tower industrial water treatment chemicals with unlimite...
12h
| Job Type | Full Time |
Truck Driver - Delivery Specialist for Industrial Chemicals - Remote
Des Moines, Iowa
Truck Driver - Delivery Specialist for Industrial Water Treatment Chemicals 2026 Garratt-Callahan is hiring an experienced delivery driver to deliver industrial chemicals to our industrial customers in the Upper Midwest. Our warehouse is in...
12h
| Job Type | Full Time |
Technical Sales Industrial Water Treatment - Remote
Indianapolis, Indiana
2025 was a Record Sales Year. And 2026 is off to a great start. A new opening: Technical Sales Territory Manager for a Indianapolis, Indiana territory. Sell boiler and cooling tower industrial water treatment chemicals with unlimited commis...
9d
| Job Type | Full Time |
Technical Sales Unlimited Commission
Chicago, Illinois
2024 was a Record Sales Year. And 2025 is looking to finish even better. A new opening: Technical Sales Territory Manager for a Chicago, Illinois territory. Sell boiler and cooling tower industrial water treatment chemicals with unlimited c...
9d
| Job Type | Full Time |
Chicago, Illinois
2024 was a Record Sales Year. Our Largest Sales Growth in Decades. 2025 is looking to finish even better. Water Treatment Chemical Service Technician-Chicago, Illinois Garratt-Callahan (www.garrattcallahan.com) is family friendly, profitabl...
9d
| Job Type | Full Time |