International Chemstar Incorporated

International Chemstar Incorporated, doing business as Chemstar Water, manufactures water treatment chemicals, equipment, and services for federal facilities and military installations, operating as a prime contractor on 99% of its federal awards under a GSA Multiple Award Schedule and holding an SBA 8(a) Business Development Program certification through August 2034. The company is a for-profit manufacturer based in Middle River, Maryland, competing predominantly in full-and-open procurements rather than set-asides, though it holds active 8(a) status and has historically competed under Total Small Business set-asides on select awards.

Chemstar Water's capability footprint centers on water treatment chemicals, testing, and maintenance services. Representative prime work includes a $858,273 delivery order from the Social Security Administration (awarded August 2026, running through February 2032) for water treatment and chemical management at SSA headquarters and Perimeter East Buildings in Baltimore under the GSA Multiple Award Schedule; a $201,620 Department of Interior delivery order (January 2023 through December 2027) for chemical treatment services at the Udall Building in Washington, D.C., also under the MAS vehicle; a $560,705 single-award indefinite delivery contract from the National Gallery of Art for water treatment services expiring February 2026; and recurring purchase orders and delivery orders from the Department of the Navy Naval Facilities Engineering Command for denitrification chemicals (including Micro-C 2000 and Delta Pak 2000 products), boiler treatment, and water analysis services. The vendor also holds a $133,536 Defense Logistics Agency Distribution purchase order (September 2024 through September 2027, total small business set-aside) for glycerin-based denitrification chemicals with annual volumes up to 6,200 gallons delivered to New Cumberland, Pennsylvania. Chemstar Water offers one labor category on its GSA Schedule — Consultant at $198.32 per hour for associates with two years' experience, no security clearance required.

Customer concentration is broad but weighted toward Department of Defense and Department of Veterans Affairs accounts. The top five customers by award count (covering 41% of all awards) are the Defense Logistics Agency Distribution (80 awards, $649 thousand combined potential value), Department of Veterans Affairs Veterans Health Administration Veterans Integrated Service Network 4 (44 awards, $494 thousand), United States Marine Corps (24 awards, $1.3 million), Department of the Navy Naval Facilities Engineering Command (15 awards, $9.4 million), and Department of the Navy Naval Sea Systems Command (8 awards, $1.3 million). By potential value, the GSA Federal Acquisition Service dominates (2 awards, $11.5 million, reflecting the MAS vehicle ceiling), followed by Naval Facilities Engineering Command ($9.4 million), Army Installation Management Command Northeast Region ($2.7 million), National Gallery of Art ($2.3 million), and Veterans Integrated Service Network 5 ($1.3 million). The tension between rankings reflects the MAS vehicle's large umbrella value paired with smaller transactional order volumes across 36 distinct customer agencies.

Chemstar Water places 198 task orders under the GSA Multiple Award Schedule (combined potential value $4.5 million), the primary vehicle for its federal work, supplemented by multiple Navy single-award indefinite delivery contracts — notably Indefinite Delivery Contract N4008017D3504 (8 task orders, $3.2 million), Indefinite Delivery Contract N4008017D2502 (5 task orders, $425 thousand), Indefinite Delivery Contract M6740015D0016 (5 task orders, $252 thousand), and Indefinite Delivery Contract M6740020D0008 (4 task orders, $79 thousand). Award activity has declined sharply in recent years: eight awards in 2022, five in 2023, eight in 2024, four in 2025, and two through August 2026, with only $425 thousand in combined potential value across four awards facing completion within the next twenty-four months and therefore subject to recompete.

In its subcontractor role, Chemstar Water performs water treatment and facilities-engineering services under Emcor Government Services (monthly water treatment and annual potable water testing at five federal buildings in Washington, D.C., awarded June 2025) and Valiant Government Services (water treatment services at USAMRICD Aberdeen under a $143,414 ceiling sub-award, September 2024). The vendor also subcontracted to Chugach Intelligence Solutions on preventive maintenance water services (February 2024) and to an unnamed firm on HVAC boiler testing and treatment for Naval and DIA facilities in the D.C. metro area (March 2025). Subcontract work represents less than 1% of Chemstar Water's federal footprint by award count, with primes routing water treatment support to Defense and Interior agency facilities.

The award portfolio spans 416 total awards with combined potential value of $35.9 million and obligated dollars of $12.8 million (36% realization rate), concentrated in water-treatment chemicals (PSC 253 awards), miscellaneous chemical specialties (35 awards), and water purification and sewage treatment equipment services (18 awards). The vendor's full service history extends to 2001, though recent year-over-year activity has flattened and contracted, signaling either market saturation, customer consolidation, or portfolio focus shift.