UNSPSC 47101544: Air diffuser for sewage treatment

A device used to provide air to the water needed for sewage treatment process.

UNSPSC 47101544 Air diffuser for sewage treatment is a Commodity code that state and local governments procure primarily as replacement components and repair parts for wastewater and water treatment equipment, not as standalone diffuser systems. Recent opportunities show purchasing bodies acquiring drive shafts, pumps, control panels, blowers, thickener mechanisms, clarifier parts, valve assemblies, and specialized treatment-equipment components—most often during rehabilitation or equipment-replacement projects at existing treatment plants. The scope reflects maintenance and capital-improvement work rather than new diffuser procurement per the code name; opportunities tagged under this code actually involve biosolids treatment, disinfection, and recirculation equipment at water reclamation and wastewater facilities. Issuing bodies include city water departments, county water authorities, special-purpose districts, and departments of watershed management, concentrated among Florida municipalities (Holly Hill, Sanford, St. Cloud, Pembroke Pines, Orange County, Collier County, Seminole County) and Georgia jurisdictions (Rome, Bremen, Hephzibah, Macon Water Authority, Cobb County, Atlanta), with activity also in California, Texas, South Carolina, Michigan, and Utah. No standout repeat buyers appear across multiple opportunities in the sample.

Recent representative procurements include the City of St. Cloud, Florida's ITB 2026-071 for lift station installation and rehabilitation services (bids due July 21, 2026, covering new and existing system work on a task-authorization basis with seven hourly labor categories); the Macon Water Authority's sealed-bid IFB for rebuild of three 75-foot-diameter gravity thickeners and clarifier #6 at Rocky Creek WRF (bids due October 20, 2026, with a mandatory pre-bid meeting October 6); the Atlanta Department of Watershed Management's IFB for hose pump parts and replacement components for Watson-Marlow Bredel pumps at multiple Water Reclamation Centers (bids due October 2, 2026); and Collier County's construction bid for South County Regional Water Treatment Plant lime softening improvements and blend tank (bids due September 21, 2026, with anticipated budget of $4.27 million and a non-mandatory pre-bid meeting September 3). Geographic activity centers on the Southeast and mid-Atlantic, with Florida and Georgia dominating recent posting volume, though procurement spans multiple states and utility types.