UNSPSC 47101543: Surface aerator

A device used to provide air to aerated basins. Electrically powered rotors are submerged in the water to provide air to the water by stirring the water surface with rotation power.

UNSPSC 47101543 Surface aerator is a Commodity code that names equipment and replacement parts for aeration systems in wastewater and water treatment applications. State and local governments procure under this code primarily for maintenance and repair of existing aeration infrastructure — including diffusers, grinders, aeration pumps, and associated components — rather than new system installations. Recent solicitations show water utilities and wastewater authorities issuing sole-source notices for proprietary diffuser and aeration systems (such as Sanitaire and Wet Well Wizard units), competitive bids for replacement parts and ancillary services, and requests for design-build or construction management contracts for facility upgrades incorporating aeration equipment. The issuing-body mix spans city water departments (Holly Hill, Phoenix, Winter Park, Scottsdale, Tampa, Waxahachie), county utilities and water authorities (Collier County, Marion County, Gwinnett County, Orange County, Bell County, Bartow County), regional water authorities (West Travis County Public Utility Agency), school districts procuring water treatment equipment (Marion County Schools), and special districts (Collin College, Texas State University). Repeat buyers include Gwinnett County, Collier County, and the City of Phoenix, each appearing in multiple recent solicitations for parts, maintenance services, and upgrades. Geographic activity concentrates in Florida (Holly Hill, Winter Park, Collier County, Marion County, Pompano Beach, Tampa), Georgia (Gwinnett County, Calhoun, Bartow County, Paulding County, Marion County, Flowery Branch, Orange County), Texas (Bell County, Waxahachie, McKinney, Collin County, Austin-area, Frisco), and Arizona (Phoenix, Scottsdale).

Recent representative opportunities include Holly Hill's procurement of a WesTech DS43 Dual Shaft Drive replacement for softener equipment at its Water Treatment Plant (sole-source notice, estimated value $113,067.00); Collier County's ITB for countywide water treatment, wastewater treatment, and parks chemicals—a large-volume, multi-vendor solicitation with approximately $4 million annual spending and an IFB response deadline of November 13, 2026; Gwinnett County's sealed-bid solicitation for solids dewatering and thickening polymer on an annual contract (bids due July 30, 2026), requiring bench-scale and full-scale performance testing; Hillsborough County's sole-source notice for Wet Well Wizard aeration systems to Agora Water Solutions LLC, covering 60–80 units annually over five years at $5.371 million estimated value; the City of Phoenix's IFB for Sanitaire membrane diffusers serving two wastewater treatment plants, with a five-year term commencing September 23, 2026; and the City of Pompano Beach's ITB for Water Treatment Plant improvements including nanofiltration facility buildout, requiring prime-contractor experience on at least two municipal membrane treatment projects valued at $20 million or more (proposals due November 2, 2026). Sole-source and proprietary-equipment procurements dominate the code because aeration and treatment systems are frequently designed around single manufacturers' compatible components, shifting much procurement activity away from price competition toward equipment and part compatibility, maintenance service continuity, and system integration with existing infrastructure.