UNSPSC 47101507: Grit chambers

UNSPSC 47101507 Grit chambers (Commodity) covers water treatment equipment and components—specifically replacement parts, filtration systems, chemical injection and blending infrastructure, and related maintenance services that state and local water utilities purchase to build or maintain drinking water and reclaimed water treatment capacity. Recent solicitations show state and local governments buying drive shaft assemblies for softening equipment, sand filtration systems, lime-softening blend tanks with chemical injection capability, microfiltration membrane modules, and OEM-certified parts and labor for operating treatment plants. The issuing bodies span municipal utilities (Cities of Holly Hill, Plant City, St. Petersburg, Meriden, LaGrange; Bell County, Texas; Riverside County, California), county water authorities (Collier County; Hillsborough County), school district facilities (Yale Public School District; Dallas ISD), and special-purpose water districts (West Basin Municipal Water District). Multiple jurisdictions solicit repeatedly—Collier County posted two versions of a lime-softening blend tank project in the past four months; Hillsborough County has posted multiple sole-source water systems procurements.

Recent activity concentrates in Florida and California, with secondary activity in Texas, Georgia, Connecticut, Michigan, and across the Southeast. Representative recent solicitations include Collier County's sealed bid for South County Regional Water Treatment Plant Lime Softening Improvements—Blend Tank (IFB 26-8683R, bids due September 21, 2026, estimated $4.27 million) for reinforced concrete blend tank construction with chemical injection systems, ductile iron piping, and UL-certified control panels; Dallas ISD's RFP for district-wide water treatment services (RFP JKJ250402, proposals due October 15, 2026, three-year base with two one-year renewal options, 30 percent SBE participation goal); West Basin Municipal Water District's Request for Qualifications for submerged microfiltration membrane pre-qualification (RFQ TH0131, SOQs due May 26, 2026) requiring NSF-60 and NSF-419 certified products; and City of LaGrange's sealed bid for water and wastewater treatment chemicals (PE74150NONST2026000000025, bids due June 8, 2026) for eight chemical items including activated carbon, aluminum sulfate, chlorine, and caustic soda with firm pricing for twelve months and two-day delivery windows. Sole-source procurements appear frequently when equipment is manufacturer-specific or when single vendors hold OEM authorization for multiple installed systems.