Company Overview

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.


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.


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.

Company Summary
Garratt-Callahan Company
Number of Employees
(650) 697-5811
50 Ingold Rd
Burlingame, CA