UNSPSC 12163100: Anti sludgers

UNSPSC 12163100 Anti sludgers, a Class code, encompasses water treatment chemicals—particularly coagulants, pH adjusters, disinfectants, corrosion inhibitors, and odor-control agents—that state and local water and wastewater systems procure for routine operational use at treatment plants and collection facilities. Recent solicitations reveal that municipalities, water authorities, and school districts buy these chemicals on recurring annual or multi-year supply contracts, typically solicited as line-item invitations to bid where suppliers can quote on individual chemical products or bundles. The City of Cartersville Water Department, the Macon Water Authority, the City of Griffin, and the City of Tallahassee all issue regular competitive bids for water treatment chemicals including aluminum sulfate solution, liquid lime slurry, chlorine, sodium hypochlorite, sodium bisulfite, magnesium hydroxide slurry, and sodium permanganate. All chemicals must carry NSF Standard 60 certification and meet AWWA standards; delivery is expected within 48 to 72 hours of order placement, and pricing is firm for the initial contract term with adjustments tied to published indices or negotiated upon renewal. School districts also participate—Dallas Independent School District recently issued an RFP for district-wide water treatment services on an as-needed basis with a three-year initial term and two one-year renewal options.

Geographic activity clusters in the Southeast and Texas. Georgia accounts for multiple recent procurements: Cartersville, Gwinnett County, Macon Water Authority, and Griffin all posted bids in the second and third quarters of 2026. Texas cities including Austin, Lubbock, Temple, and Dallas ISD similarly solicited water treatment chemicals or related services in the same period. Florida also shows activity, with the City of Tallahassee issuing a five-year magnesium hydroxide supply contract and the City of Orlando soliciting hydrogen sulfide control services using hydrogen peroxide and PRISC. Connecticut's City of Meriden and the City of Lubbock round out recent activity. Representative opportunities include the City of Cartersville's IFB for multiple chemicals with delivery to two water treatment plants (due October 30, 2026); the Macon Water Authority's sealed-bid procurement for water and wastewater chemicals (due August 18, 2026); the City of Austin's IFB for sodium bisulfite solution to wastewater plants (due June 9, 2026); and the City of Tallahassee's five-year magnesium hydroxide slurry contract with local vendor preference provisions (due June 16, 2026).