NIGP 89021: Desludging Equipment and Accessories
Item
Code facts
NIGP codes come from the NIGP Code (NIGP: The Institute for Public Procurement, maintained by Periscope Holdings), and state and local contract opportunities from the governments' procurement sites.
State & local contract opportunities
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Opportunities by state
UNSPSC codes for 89021
About NIGP 89021
NIGP 89021 Desludging Equipment And Accessories, Item, addresses the procurement of specialized equipment, installation services, and consumable materials for wastewater treatment plant sludge management and digestion systems. State and local governments buy engineering design services for aerated sludge holding tank upgrades, gas purification scrubber equipment packages, digester tank rehabilitation or replacement, drive shaft replacements for treatment equipment, and liquid and raw sewage hauling services across multiple treatment plants and facilities. The issuing bodies include county boards of commissioners, state environmental departments, city public utilities and public works departments, special-purpose districts, and university-operated treatment plants. Maryland Environmental Service appears repeatedly as a major buyer of liquid sludge hauling services across multiple facilities in central Maryland counties.
Recent activity spans Maryland, California, and Arizona, with concentrated activity in Maryland through the Maryland Environmental Service conducting multiple sealed-bid hauling procurements, and California's Department of Water Resources issuing statewide water treatment system service contracts. Representative opportunities include Charles County Board of Commissioners' RFP for engineering design of aerated sludge holding tank upgrades at Mattawoman Wastewater Treatment Plant with proposals due July 30, 2026; California Department of Water Resources' IFB #10220465 for comprehensive water treatment system services across State Water Project facilities with bids due August 18, 2026; Salt Lake City's RFQ for digester complex upgrades and gas purification scrubbers equipment with qualifications due August 5, 2026; Maryland Environmental Service's sealed-bid procurements for liquid sludge hauling from multiple wastewater treatment plants in Howard and Washington Counties with bids due May 26 and June 29, 2026; and City of Goodyear's IFB 26-0142 for anaerobic digester tank rehabilitation at the Corgett Water Reclamation Facility with bids due May 14, 2026. Maryland's multi-step sealed-bid process, requiring technical acceptability screening before price evaluation, appears in multiple consecutive sludge hauling awards. California water treatment procurements carry prevailing wage requirements and DVBE participation mandates of 3 to 5 percent.
Quick answers
What is NIGP 89021?
NIGP 89021 is Desludging Equipment and Accessories, an item in NIGP 30, Water and Sewer Treatment Equipment, Supplies, and Services.
Which states post the most state and local bids under NIGP 89021?
The states with the most state and local contract opportunities under NIGP 89021 posted in the last 90 days are Maryland (2), Georgia (1) and Missouri (1).
Which UNSPSC codes match NIGP 89021?
NIGP 89021 maps to 8 UNSPSC codes, including 47101524 Sludge or sewage composting equipment, 47101526 Sludge pelletizers and 47101527 Sludge shredders.
What is the latest state & local contract opportunity under NIGP 89021?
The latest state & local contract opportunity under NIGP 89021 is Liquid Sludge Hauling Services for Wastewater Treatment Plants at Myersville and Hagerstown Central Region - SBR Procurement from Maryland, posted August 21, 2026.
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