NIGP 22033: Liquid Level Controllers, Indicators, and Recorders

NIGP 22033 Liquid Level Controllers, Indicators, and Recorders, an Item code, covers controllers, interface boards, and monitoring instruments that state and local water utilities, environmental authorities, and municipal departments deploy to detect and manage hazardous gases, control pump systems, and collect real-time data across water distribution, wastewater, and industrial facilities. Recent solicitations show municipalities and regional authorities acquiring specific controller models (such as phase monitors and duplex lift station backup pump controllers), interface boards for SCADA systems, and advanced human-machine interface (HMI) equipment for operational oversight and process automation. The buying body mix spans city water services departments, regional water authorities, and solid waste facilities, with issuing bodies including the City of Tampa, City of Phoenix Water Services, and specialized districts such as the Solid Waste Authority of Palm Beach County and Tampa Bay Water.

Recent activity concentrates in Florida and the Southwest, grounded in the City of Tampa's RFQ 27-P-00018 (due October 29, 2026) requesting 25 units of Controller and Phase Monitor, 15 units of Interface Board for SCADA ACE3600 Mixed I/O Module, and 15 units of Controller, Duplex Lift Station Backup Pump Controller, with five-business-day delivery to specified locations; a prior Tampa RFQ 26-P-00515 (response deadline passed September 28, 2026) for three units of Advanced HMI 15" equipment, Model CMT2158 by Maple Systems; and the City of Phoenix Water Services Department's IFB 27-0435 (sealed offers due September 4, 2026) for atmospheric monitoring instruments including sensors, controllers, alarms, and calibration materials to detect hydrogen sulfide, methane, oxygen depletion, chlorine, ammonia, ozone, chlorine dioxide, and carbon monoxide at lift stations, headworks, chemical storage, and confined space entry points under a five-year firm contract with DBE-N compliance obligations.