Garratt-Callahan Company

Garratt-Callahan Company, doing business as Garratt Callahan Co, is a Burlingame, California-based industrial water treatment specialist that operates as a prime contractor (99% of awards) supplying water treatment chemicals, testing services, legionella mitigation, and facility water system maintenance to federal agencies across a 713-award portfolio spanning since 1989. The vendor is a for-profit Subchapter S corporation with over 117 years of operational history and competes predominantly full-and-open, though a subset of recent awards carry total small business set-aside designations.

Garratt-Callahan's capability footprint centers on industrial water treatment chemicals (sodium bisulfite, sodium bisulfate, perlite, antifoam, propylene glycol, hydrated lime, ferric chloride), water quality testing and analysis, legionella disinfection and mitigation services, and on-site cooling tower and boiler plant chemical treatment. Representative prime work includes a $3.3 million legionella mitigation purchase order from the Department of Veterans Affairs Veterans Integrated Service Network 22 (Loma Linda Healthcare System) with a June 2025 completion date, a $312 thousand chemical treatment service delivery order placed by the CDC Pittsburgh against the GSA Multiple Award Schedule for the Morgantown facility running through July 2027, a $222.8 thousand delivery order from VISN 7 for chiller and boiler plant chemical treatment through January 2030, a $161.6 thousand delivery order from VISN 20 for boiler systems at the Spokane facility through February 2028, and an April 2026 single-award indefinite-delivery contract from TACOM Life Cycle Management Command valued at $2.5 million for industrial water treatment plant chemicals through March 2031.

Customer concentration is heavily skewed toward the Department of Veterans Affairs and the Department of Defense. The top five funding entities account for 19% of awards by count but a larger share of dollars: VISN 22 leads with 24 awards totaling $7.7 million in potential value; TACOM LCMC follows with 46 awards totaling $5.3 million; VISN 17 holds 22 awards totaling $577 thousand; the National Institutes of Health Office of Research Facilities Development Operations Acquisitions registered 21 awards totaling $176 thousand; and the Army itself shows 20 awards totaling $5 thousand. The VA across its service networks dominates the potential-value ranking, reflecting Garratt-Callahan's long-standing relationship with VA medical facility water system maintenance. Within the 51 distinct customer agencies served, federal correctional facilities (Federal Correctional Institution El Reno, Metropolitan Detention Center Guaynabo, Federal Correctional Complex Coleman, Federal Correctional Complex Pollock) recur as steady customers for water treatment chemical supply and emergency services.

Garratt-Callahan places most task orders under two primary vehicles: the Federal Supply Schedule GS10F7724A (358 task orders, $3.6 million combined potential value) and the broader Multiple Award Schedule program (43 task orders, $3.7 million). The vendor also holds a $766 thousand indefinite-delivery contract with TACOM Life Cycle Management Command (contract W911KF20D0002, 24 task orders worth $336 thousand) and a $1 million single-award IDV with VA VHA Network 22 for legionella mitigation services. The April 2026 TACOM award of $2.5 million represents a newly incumbent position on a fresh single-award IDV vehicle running through March 2031, reflecting recompete success in that customer relationship.

Activity has remained stable year over year at 12–15 awards annually across 2022–2025, with modest recent output (three awards in 2026 to date, based on a May 2026 snapshot). Only four awards face ultimate completion within the next twenty-four months, carrying combined potential value of $650 thousand, suggesting limited near-term recompete exposure. Garratt-Callahan operates almost entirely as a prime; sub-award activity is minimal (4 sub awards out of 713 total, or 1%), but recent sub-awards show entry into facility operations and maintenance teaming: the vendor subcontracted to J&J Maintenance Inc. for O&M and repair at Brooke Army Medical Center (October 2025), to Valiant Government Services LLC for water treatment at Winn Army Community Hospital at Fort Stewart (September 2025), to Alutiiq Operations Services LLC for water testing and treatment at the Memphis Internal Revenue Service Center (July 2025), and to CMI Management LLC for water quality management testing at Brownsville-area port-of-entry facilities (March 2025). These sub relationships position Garratt-Callahan as a water treatment specialist feeder into larger facility operations primes.

SCI-reported invoiced revenue on federal service contracts above $150 thousand (a partial view excluding goods, micro-purchases, and below-threshold contracts) totaled $1.1 million across FY2022–FY2024, with FY2024 registering $495 thousand across 2.3 FTEs and growth trend evident from FY2022's $217 thousand. Median government-paid hourly rates for prime SCI contracts ran $178/hr, with a range from $162.50/hr at the tenth percentile to $196.84/hr at the ninety-fifth percentile, typical of mid-level technical and management labor. Across SCI-reportable prime contracts, the vendor carried zero percent sub-hours share, reflecting its built-in-house delivery model on service contracts.

The vendor's award portfolio is concentrated in All Other Miscellaneous Chemical Product and Preparation Manufacturing (NAICS 325998, 423 awards), Polish and Other Sanitation Good Manufacturing (48 awards), and Other Basic Inorganic Chemical Manufacturing (29 awards). PSC coding shows a heavy tilt toward Chemicals (PSC group 61, 348 awards), Miscellaneous Chemical Specialties (68 awards), and Water Purification Equipment (36 awards). This NAICS and PSC concentration reflects Garratt-Callahan's identity as a pure-play water treatment chemical and services supplier rather than a broad facilities contractor.

Garratt-Callahan Company provides custom water treatment solutions based on a century of experience. We help you protect your investments in equipment and facilities while controlling your energy and maintenance costs.