UNSPSC 32151700: Programmable Logic Controllers

UNSPSC 32151700 Programmable Logic Controllers is a Class code under which state and local governments buy PLC hardware, replacement equipment, and integration services for water treatment, wastewater, and critical infrastructure control modernization projects. The code captures solicitations for new PLC units—typically Allen-Bradley ControlLogix, Schneider Electric M580 or Unity platforms, or equivalent legacy-replacement hardware—alongside the engineering, programming, installation, and factory/site testing work required to deploy them into production SCADA environments. Representative recent work includes multi-million-dollar water plant SCADA system overhauls combining PLC replacement, HMI migration, network architecture upgrades, control panel installations, and operator training delivered on 360-day timelines with strict qualification thresholds (five-plus years of comparable projects, demonstrated past performance on similar municipal water or wastewater facilities, and dedicated project management and programming staff with specific platform certifications). Issuing bodies include municipal water and wastewater utilities, city departments of infrastructure or watershed management, and occasionally special-purpose water authorities and treatment districts.

Recent activity clusters in Georgia and Florida, with outlier solicitations in California, Connecticut, and New Mexico. The City of Atlanta Department of Watershed Management posted two parallel pre-advertisement notices in May 2026—one for Hemphill Water Treatment Plant SCADA improvements (RFP PE66062NONST2026000000376, due May 29, 2026) and one for Chattahoochee Water Treatment Plant SCADA improvements (RFP PE66062NONST2026000000374, due May 29, 2026)—both seeking comprehensive PLC and network modernization with Factory Acceptance Testing and on-site training. The City of Santa Fe, New Mexico issued RFP #FY26-RFP-036 in February 2026 (due January 9, 2026) for replacement of four legacy Quantum PLCs with Schneider Electric M580 units across Buckman Direct Diversion water system sites. The Eastern Municipal Water District in Riverside County, California solicited three 500HP Variable Frequency Drives (RFB #3921, due April 30, 2026) as PLC-adjacent infrastructure replacement. No set-aside designations or disadvantaged-enterprise restrictions appear in the recent opportunities; participation is open to qualified factory-authorized distributors and systems integrators meeting demonstrated performance and staffing criteria.