NIGP 91359: Construction and Upgrades, Wastewater Treatment Plant

NIGP 91359 Construction and Upgrades, Wastewater Treatment Plant is an Item code under which state and local governments procure capital improvements to wastewater and water treatment facilities—including equipment replacement, plant upgrades, structural repairs, and associated site work. Recent solicitations reflect a broad mix of treatment plant infrastructure work: mechanical and electrical system rehabilitation, headworks and aeration basin improvements, pump station construction and decommissioning, gravity thickener and clarifier repairs, secondary treatment facility upgrades, and trenchless pipe rehabilitation within treatment plant grounds or service areas. County water authorities, municipal utilities, regional wastewater commissions, and special-purpose water districts issue the majority of work, with repeat activity from Florida municipalities, Georgia counties, and Oregon/California regional treatment authorities. Issuing bodies span city utilities departments (Sanford, Cocoa, Port Orange, Ashland), county utilities (Hillsborough, Orange, Brevard, Clackamas), regional water and sewer commissions (Brunswick-Glynn, Bergen County Utilities Authority, Eastern Municipal Water District), and state environmental agencies (Florida DEP, Georgia DNR equivalents). Recent representative solicitations include the Town of Manchester Water and Sewer Department requesting furnish-and-install proposals for siphon inserts at Globe Hollow Water Treatment Facility with a November 17, 2026 response date (RFP model with prevailing wage and performance bond requirements); Hillsborough County Engineering and Operations Department issuing IFB-26-00404 for Kirby Street Pump Station rehabilitation with a $1,473,476.90 estimated value and November 13, 2026 deadline; Clackamas County's BID 2026-78 for Tri-City Water Resource Recovery Facility aeration basin refurbishment with a $3.7 million engineer's estimate and November 10, 2026 response date; and the City of Pompano Beach issuing ITB27-001 for Water Treatment Plant Improvements Phase 1 requiring prime contractor experience on at least two $20 million-plus municipal membrane treatment projects with November 2, 2026 proposals due.

Geographic activity concentrates in Florida (Orange County, Hillsborough County, Brevard County, Pinellas County, multiple municipalities), Georgia (Gwinnett County, Athens-Clarke County, Glynn County, Rome, Eatonton), Oregon and California (Clackamas County, Thousand Oaks, Santa Clara County, Ashland, Phoenix), with additional solicitations from Connecticut, New Jersey, Ohio, Arizona, South Carolina, and Texas. Prevailing wage and Buy American requirements feature prominently in federally funded or state revolving fund projects. Set-asides for small business, minority-owned, and women-owned enterprises appear in many recent bids (SBE/MBE/WBE goals ranging 5–18 percent), particularly in Florida county and city procurements and state-funded treatment plant work in Georgia and Oregon. Performance and payment bonds at 100 percent of contract value are standard; bid security typically runs 5–10 percent. Work typically requires prime contractors to hold state general contractor or utility contractor licenses, demonstrate prior municipal treatment plant experience, and maintain comprehensive general liability insurance ($1–2 million per occurrence limits). Liquidated damages for schedule delays range $500–$5,000 per day. Contract durations for plant rehabilitation and construction projects span 150 to 900 calendar days depending on scope complexity, with substantial completion milestones typically at 60–70 percent of final project timeline.