UNSPSC 47101560: Filter underdrain equipment

A structure that improves the equal filtering and backward flow functions in the rapid filtration.

UNSPSC 47101560 Filter underdrain equipment, a Commodity code, encompasses the supply and installation of specialized underground drainage systems that state and local water treatment facilities, wastewater plants, and stormwater management projects procure to collect, convey, and manage groundwater and subsurface flows. Recent state and local activity reveals that municipalities and counties are soliciting underdrains primarily as components within broader water treatment plant improvements, pump station rehabilitation, and site-level drainage infrastructure projects—not as standalone equipment orders. The City of Holly Hill, Florida has posted multiple sole-source notices for replacement parts and systems at its Water Treatment Plant, including drive shafts for softener units, Xylem Flygt pump components, and Chemco lime slaking systems, all of which integrate with or depend on functional underdrain infrastructure; Lehi City, Utah issued a bid (RFB LEHI202604, due September 15, 2026) for approximately 385 linear feet of HDPE and PVC underdrain pipe installation within city right-of-way and municipal property for groundwater collection; and Palm Bay, Florida (on behalf of Brevard County) solicited construction bids (ITB 54-ITB-26, due October 27, 2026) that included media-enhanced filtered wetlands with underdrain components as part of pond improvement projects. Issuing bodies span municipal water departments, county water resources divisions, special-purpose districts, and school facilities—with no dominant single buyer emerging in recent opportunities.

Recent underdrain procurements concentrate in Florida, Georgia, Utah, and Texas, with activity distributed across municipal water utilities, county departments of water resources, and regional water authorities rather than showing geographic concentration. Representative recent opportunities include Lehi City's underdrain installation for groundwater collection (RFB, September 2026), Palm Bay's media-enhanced wetland construction with underdrain systems funded through a Florida Department of Environmental Protection grant (ITB, October 2026), Gwinnett County's multiple bypass pumping and water infrastructure projects that involve gravity sewer and pump station work (sealed bids recurring through 2026), and Collier County's South County Regional Water Treatment Plant lime softening improvements (ITB 26-8683R, due September 21, 2026) that encompass chemical piping, tank work, and associated drainage integration. The code shows moderate and steady activity tied to capital improvement funding cycles, with most opportunities posted as components within larger water or wastewater facility construction or rehabilitation projects rather than as dedicated underdrain procurements, suggesting that pursuit success depends on bundling underdrain supply and installation expertise within broader treatment-plant or site-drainage integration capabilities.