UNSPSC 12163100: Anti sludgers

UNSPSC 12163100 Anti sludgers (Class) encompasses water treatment and wastewater chemicals that municipalities and county utilities procure on recurring supply contracts, including coagulants, flocculants, pH adjusters, disinfectants, corrosion inhibitors, and specialty compounds for sludge handling and residual chlorine reduction. Recent state and local solicitations under this code show cities and counties purchasing sodium hypochlorite, aluminum sulfate, caustic soda, calcium hypochlorite, liquid ammonium sulfate, sodium bisulfite, magnesium hydroxide slurry, potassium permanganate, ortho/polyphosphate corrosion inhibitors, and liquid polymer for sludge dewatering—all meeting NSF/ANSI Standard 60 or 61 certification and AWWA requirements. Issuing bodies include municipal water and wastewater utilities in mid-sized and large cities, county water resources departments, and regional water treatment authorities; repeat soliciting jurisdictions in the recent record include the City of Austin (sodium bisulfite for wastewater treatment), Volusia County and City of Tallahassee in Florida (corrosion inhibitors and magnesium hydroxide), and multiple Georgia municipalities (Griffin, Flowery Branch) issuing multi-line water and wastewater chemical bids. Procurement vehicles are predominantly ITBs and RFPs with one-year to five-year contract terms, often including renewal options, and awards typically made to lowest responsive and responsible bidders on individual line items or full contracts based on unit pricing (per pound, gallon, or wet pound).

Geographic activity concentrates in Florida, Georgia, Texas, and Arizona, with notable recent solicitations from Phoenix, Austin, and Tallahassee. The City of Temple, Texas (liquid ammonium sulfate, ITB, June 10, 2026 deadline, 875,000 wet pounds annually), the City of Meriden, Connecticut (seven-line water treatment chemical ITB, June 25, 2026 deadline), and the City of Griffin, Georgia (sixteen-line FY27 water treatment chemicals ITB, May 28, 2026 deadline) represent active procurers. The City of Austin's rebid for sodium bisulfite solution (IFB 2200 BYS1051REBID, June 9, 2026 deadline, as-needed delivery to wastewater plants) and the City of Tallahassee's magnesium hydroxide slurry contract (five-year term with two optional renewals, June 16, 2026 deadline, hydrogen sulfide and corrosion control) show multi-year contract structures typical in the category. Local vendor preferences apply in Temple (5% adjustment under Texas Local Government Code) and Tallahassee (Leon County local vendor affidavit), while federal compliance requirements (Davis-Bacon, Buy America, FEMA funding) appear in select solicitations. Delivery windows consistently require 48-hour to 72-hour response times, NSF certification is mandatory across nearly all solicitations, and performance bonds or bid bonds are standard when contract value exceeds thresholds ($250,000 in Flowery Branch; 10 percent in Meriden).