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Garratt-callahan Company Construction
Garratt-Callahan Company, based in Burlingame, CA, specializes in water treatment solutions for industrial and commercial clients. Since its founding in 1904, the company has provided water treatment chemicals, equipment, and engineering services across the United States. Garratt-Callahan serves a wide range of industries, including manufacturing, healthcare, food and beverage processing, commercial buildings, and utilities. The company's expertise covers boiler water treatment, cooling tower water treatment, wastewater treatment, pretreatment, and process water management. Garratt-Callahan designs custom water treatment programs to improve system reliability, conserve water and energy, and meet regulatory requirements. Their portfolio includes projects such as cooling system treatment for hospitals, boiler water programs for manufacturing plants, and wastewater solutions for municipal facilities. The company utilizes advanced monitoring technologies and offers equipment such as filtration systems, chemical feed pumps, and control panels. Garratt-Callahan provides support through field engineering, laboratory analysis, and regulatory compliance services, working directly with property managers, facilities engineers, and plant operators throughout California and beyond.
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Garratt-callahan Company License info
Verified License
| License # | 0077527 |
| Status | Active |
| State | Nevada |
| Type | C 30 Installing Equipment To Treat Water |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Garratt-callahan Company at the Nevada State Contractors Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 43043 |
| Status | Active |
| State | Alabama |
| Type | General Contractors |
- When BuildZoom last verified this license, it had an expiration date of August, 2025. Check the current license status of Garratt-callahan Company with the Alabama Licensing Board for General Contractors
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 77527 |
| Status | Active |
| State | Nevada |
| Type | C30 - Install Equipment To Treat Water |
- When BuildZoom last verified this license, it had an expiration date of December, 2014. Check the current license status of Garratt-callahan Company with the Nevada State Contractors Board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | GARRAC*827O1 |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
- According to the Washington State Department of Labor & Industries, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Garratt-callahan Company at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Insured
| Insurer | Aig Specialty Insurance Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $5,000 |