UNSPSC 47101616: Sludge reducing agent

A substance added to reduce the amount of sludge generated by controlling the microbial metabolism in biological treatment processes such as sewage and wastewater

UNSPSC 47101616 Sludge reducing agent is a Commodity code covering chemical products and services used to control hydrogen sulfide, reduce corrosion, manage odors, and process sludge in municipal water and wastewater treatment systems. State and local governments procure these materials as recurring supplies for drinking water plants, wastewater treatment facilities, pump stations, and collection systems. The code encompasses both standalone chemical products (liquid hydrogen peroxide, magnesium hydroxide slurry, sodium bisulfite) and integrated service contracts where vendors apply chemicals on-site to manage hydrogen sulfide and corrosion at lift stations and force mains. Issuing bodies include city water departments, county environmental authorities, water authorities, independent school districts, and special-purpose environmental service agencies. Water utilities in Georgia, Texas, Florida, Connecticut, and Maryland represent the dominant recent procurement activity, with cities of Cartersville, Griffin, and Macon (Georgia), Temple and Austin (Texas), Tallahassee (Florida), and Meriden (Connecticut) all posting multiple solicitations.

Recent opportunities span multiple procurement types. The City of Cartersville Water Department issued an IFB on September 17, 2026 (bids due October 30) for water treatment chemicals including aluminum sulfate solution, liquid lime slurry, chlorine, hydrofluosilicic acid, sodium hypochlorite, and sodium bisulfite for two treatment plants with annual delivery schedules and NSF-60 approval requirements. The City of Austin, Texas issued an IFB on May 11, 2026 for sodium bisulfite solution (38% concentration in totes) as redundant backup to reduce residual chlorine before discharge, with a 5% local-business evaluation discount and requirement to maintain dual distribution terminals. The City of Tallahassee issued a rebid IFB on May 1, 2026 (bids due June 16) for magnesium hydroxide slurry under a five-year firm-fixed-price requirements contract with optional two-year renewals, requiring five years' prior experience, ANSI/NSF Standard 60 certification, and emergency 24-hour delivery capability. The City of Orlando issued an IFB on August 17, 2026 for hydrogen sulfide control service (hydrogen peroxide and PRISC application) at three lift stations. The Maryland Environmental Service issued a sealed-bid solicitation on August 21, 2026 for liquid sludge hauling to wastewater treatment plants in Washington and Frederick Counties. Delivery performance requirements, NSF and AWWA certifications, local preference opportunities, and firm pricing through initial contract periods are common across these solicitations.