ALUM (ALUMINUM SULFATE) and POLYALUMINUM CHLORIDE (POLYALUMINUM HYDROXYCHLOROSULFATE) IDIQ

The U.S. Army Corps of Engineers Baltimore District is planning the re-procurement of an indefinite-delivery indefinite-quantity single-award delivery-order contract for aluminum sulfate and polyaluminum hydroxychlorosulfate. These chemicals support the operations of the Dalecarlia and McMillan Water Treatment Plants under the Washington Aqueduct Division, which provides potable water to approximately one million people in the District of Columbia and Northern Virginia. The procurement is being conducted as a combined synopsis and solicitation under solicitation number W912DR26RA039.

This requirement is classified under NAICS 325180, Other Basic Inorganic Chemical Manufacturing, and PSC 6810, CHEMICALS. There is no set-aside, recorded as acronym NONE and explanation NONE, for this opportunity. Primary performance will occur in Washington, DC, and Clark Miller is the designated point of contact. One attachment containing a link to the Unison Global Marketplace reverse auction was published with the notice on April 24, 2026.

The deadline for responses is May 29, 2026. The solicitation and its associated reverse auction details are hosted through the Unison Global Marketplace, and a draft statement of work has been provided to outline the operational requirements for the two treatment plants.