NIGP 03124: Controls, Cooling Tower Water Treatment: pH, Conductivity, Corrosion Sensors

NIGP 03124 Controls, Cooling Tower Water Treatment: pH, Conductivity, Corrosion Sensors is an Item code under which state and local governments procure water chemistry monitoring equipment, treatment chemicals, and associated field services to maintain cooling tower systems, chilled water loops, and water treatment infrastructure. Recent solicitations show a heavy emphasis on ongoing chemical treatment supply and system monitoring rather than sensor hardware alone; municipalities and special districts are bundling sensor deployment with preventive maintenance contracts that include remote monitoring, quarterly reporting, biological studies, and emergency consultation. State and local buyers under this code include county public works departments, municipal water utilities, county school districts, transit authorities, and special-purpose water authorities across Florida, Georgia, Texas, North Carolina, and Connecticut. Okaloosa County, Florida (ITB FM 76-26, due September 16, 2026) sought monthly inspection, testing, and treatment of chilled water loops, evaporative cooling towers, and condenser systems across eight county facilities with 24-hour emergency consultation and on-site response within 48 hours; chemistry maintenance required pH and biocide control, bacterial counts below 100,000 bacteria/ml per FDA boiler treatment guidelines, and compliance with all Florida and U.S. chemical handling regulations. DeKalb County School District (RFP 27-812, due October 22, 2026) requested HVAC water treatment services across 98 facilities, with 82 requiring cooling tower and condenser water treatment and 20 requiring chilled water system treatment.

Recent activity concentrates in Florida and Georgia, where municipal and county water authorities are soliciting both competitive and sole-source procurements. The City of Holly Hill, Florida has issued three sole-source notices (October 19, 2026) for OEM replacement parts and authorized service: Flygt pump components and equipment from Xylem Water Solutions USA Inc., lime slaking systems and service from Chemco Systems L.P., and Heavy Duty Belt Press components from Andritz Separation, Inc., each justified on grounds of proprietary equipment incompatibility and exclusive manufacturing or service rights. Collier County, Florida is procuring chilled water treatment services and chemical supply from Nalco Company LLC under a sole-source notice (challenge period closing September 11, 2026) spanning September 2026 through September 2030 for campus-wide central chilled water system protection. Dallas Independent School District (RFP JKJ250402, due October 15, 2026) is soliciting district-wide water treatment services on a three-year term with two optional one-year renewals, with SBE participation weighted at up to 20 percentage points and an aspirational 30 percent SBE dollar target. The market also captures sensor-specific replacement parts procured as part of broader system maintenance — the City of Rio Rancho, New Mexico (IFB 27002UT, due August 11, 2026) procured removal, disposal, and replacement of granular activated carbon media from four 9,800-gallon treatment vessels at its Advanced Water Treatment Facility. Sole-source and OEM-restricted procurements dominate recent posted opportunities, reflecting installed-base lock-in and the specialized nature of cooling tower and chilled water chemistry control.