NIGP 89013: Clarifiers and Settlers (Separators)

NIGP 89013 Clarifiers and Settlers (Separators), an Item code, encompasses equipment replacement, rehabilitation, and installation services for water and wastewater treatment clarifiers and thickener mechanisms that state and local governments are actively procuring. Recent solicitations show municipalities and water authorities buying clarifier drive shaft replacements (single units), secondary clarifier rehabilitation and mechanism overhauls (multi-clarifier projects), gravity thickener rebuilds, and associated mechanical and instrumentation upgrades—typically as capital improvement projects tied to facility maintenance or hurricane recovery. Issuing bodies span city water treatment plants (Holly Hill, Rome, Pendleton, Tucson), county water authorities and reclamation facilities (Cobb County, Collier County, Hillsborough County, Macon Water Authority, Seminole County, Great Lakes Water Authority), and state departments (California Department of Water Resources). Repeat buyers in the recent activity include Cobb County (secondary clarifier rehabilitation and multiyear master task order for water facility engineering) and Collier County (lime softening blend tank construction with clarifier support systems).

Geographic concentration centers on Florida (Holly Hill, Hillsborough County, Seminole County, Collier County) and Georgia (Rome, Cobb County, Macon), with representation from California (state-level services), Oregon (Pendleton), Arizona (Tucson), and Michigan (Great Lakes Water Authority). Representative opportunities include the City of Rome's design-build secondary clarifier rehabilitation (RFQ, SOQs due November 3, 2026), the Macon Water Authority's rebuild of three gravity thickeners and clarifier #6 (sealed bid, due October 20, 2026, with mandatory pre-bid October 6), and Collier County's $4.27 million blend tank and supporting clarifier improvements project (sealed bid, due September 21, 2026). The California Department of Water Resources procured statewide water treatment system services including clarifier maintenance and repair (Invitation for Bid, due June 9, 2026). Sole-source and fixed-price design-build delivery methods appear alongside traditional sealed-bid and master service agreement structures, with prevailing wage and disadvantaged business enterprise requirements common in publicly funded projects.