Garratt-Callahan Company Employee Directory

Chemical ManufacturingCalifornia, United States201-500 Employees

Garratt-Callahan Company is one of the leading providers of expert industrial water treatment solutions. Offering comprehensive water treatment solutions and expert consulting services backed by 117+ years of experience, we optimize system performance to extend equipment life, reduce health and safety risks, and minimize operating costs. 

We are guided by our responsibility to provide our customers with unparalleled customer service and effective, dependable water treatment solutions. Garratt-Callahan takes a proactive scientific approach to prevent problems before they occur so that our customers can spend more time running their business and less time trying to fix it. 

Specialties
We utilize the most current, proven technology and treat our customers’ facilities with the same care and conscientiousness that we would with our own. We offer a full range of chemical and equipment solutions, created in our certified laboratory that follows State and Federal EPA standards. We also ensure that our water treatment products are certified in compliance with the international standards of quality of ISO 9001:2015 by NSF-ISR. 

Our water treatment services include:
* Boiler Water Treatment
* Cooling Water Treatment
* Wastewater Solutions
* LAP Certified In-house Laboratory
* Water Management Plans
* Legionella Mitigation
* Secondary Disinfection
* Water Treatment Training

ASSE/IAPMO/ANSI 12080 Water Safety Training
With the global COVID-19 pandemic and virus variants, water safety is even more critical. Our team is trained and certified with the implementation of ASHRAE 188-2018 to minimize the risk of Legionellosis. In 2020, ASHRAE adopted the American Society of Sanitary Engineers (ASSE) 10280.

A growing number of our field technicians are certified under the new ASSE 12080 program.

Find Garratt-Callahan Company employees' phone numbers or email addresses

Garratt-Callahan Company Global Highlights

Location
Employees

North America
459

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  • United States Of America
    458
  • Canada
    1

Africa
1

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  • Zambia
    1

Asia
1

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  • Viet Nam
    1

Europe
1

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  • United Kingdom Of Great Britain And Northern Ireland
    1

Garratt-Callahan Company's Leadership

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    A. R. C.
    Ceo Callahan Corp
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    C. C.
    Ceo
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    M. C.
    Chief Financial Officer
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    J. G.
    President
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    J. C.
    President
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    W. C.
    Founder & Principal
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    D. W.
    Owner
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    V. R.
    Vice President-National Sales Manager
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Contact profiles from Garratt-Callahan Company

Name
Title
Contact Info
Location
Last Update
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    N. S.
    General Manager
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    United StatesTexas
    Sep 11, 2025
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    P. P.
    Territory Manager
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    Bay
    Nov 14, 2025
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    P. H.
    Business Development Manager
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    United StatesArkansas
    Feb 07, 2025
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    S. R.
    Territory Manager/Sales Engineer
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    United StatesSouth Carolina
    Oct 21, 2025
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    S. A.
    Territory Manager
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    United StatesWisconsin
    Feb 07, 2025
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    T. B.
    Territory Manager
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    United StatesMississippi
    Nov 13, 2025
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    T. S.
    Central Texas District Manager
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    United StatesTexas
    Nov 18, 2025
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    T. T.
    Territory Manager
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    United StatesOregon
    Jan 28, 2025
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    H. L.
    Territory Manager-Asse 12080 Certified
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    United StatesLouisiana
    Nov 14, 2025
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    J. R.
    Corporate Accounts Manager
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    United StatesPennsylvania
    Sep 10, 2025

Frequently Asked Questions

What is Garratt-Callahan Company known for?

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Garratt-Callahan Company was founded in 1904 operates in the Chemical Manufacturing industry; you can contact the main corporate office by phone at . Explore Garratt-Callahan Company's company overview page for more information.

What is Garratt-Callahan Company's most common email format?

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Garratt-Callahan Company employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Garratt-Callahan Company email formats with LeadIQ.

How many employees does Garratt-Callahan Company have currently?

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Garratt-Callahan Company has approximately 425 employees as of December 2025. These team members are located across 4 continents, including North AmericaAfricaAsia.

Who are Garratt-Callahan Company's key employees and leadership?

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As of December 2025, Garratt-Callahan Company's key employees include:

  • Ceo Callahan Corp: A. R. C.
  • Ceo: C. C.
  • Chief Financial Officer: M. C.
  • President: J. G.
  • President: J. C.

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