G-C Advantage

There are several advantages of working with Garratt-Callahan. First, we develop life-long lasting relationships with our customers built on fairness, honesty and integrity. We don’t promise what we can’t deliver and we honor our commitments to our customers, our community, and the environment. Second, the size of our company allows us to be more flexible and attentive to the needs of our customers. This allows us to thoroughly understand the challenges our clients face and find the best possible solutions to deliver results. Lastly, our expertise.

Since 1904, our business has been solely focused on water treatment. We have played a key role in engineering some of the most innovative breakthroughs in the water treatment industry that other companies use today. Our team is built up of experts with 15-25 years experience in the water treatment industry, with an average tenure of 10 years with our company. This means stability and consistency for our customers. By working with Garratt-Callahan you will appreciate service you can count on, and a family you can trust.


“Our Garratt-Callahan Rep has exceeded my expectations. We have worked together to solve complex design issues related to poor water quality. I feel very confident in his knowledge and testing procedures.”

Facilities Manager - Government

“Our rep, takes his time to explain the process and any issues we have. He promptly responds when we contact him. The main reason that we are happy is that our system works the way it should!”

Facilities Manager - Data Centers

“During the last 12 years I have dealt with G-C, our rep has provided excellent customer service. Recently, a local rep had been assigned to our hospital and he is knowledgeable and customer-oriented. This customer service attention is what sets G-C apart from other H2O Treatment Co’s.”

Purchasing Dir. - Healthcare

“I have been working with Garratt-Callahan for several years. The Service Representatives are very knowledgeable in their field, true professionals that not afraid to get dirty. Our assigned reps jump into any issues to ratify any problems I have ever experienced.”

Maint. Engineer - Healthcare

“Your field rep is very helpful with our growing needs with our system that we have installed at our facility. We have had constant problems with our water (very hard) to which she recommended installing a R/O system which has greatly helped with maintaining our 3 boiler system stays up and running. This is very important during the winter months because we have to steam Bio railcars.”

Operator - Biofuels

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