UNSPSC 47101537: Sludge conditioning equipment

UNSPSC 47101537 Sludge conditioning equipment is a Commodity code that state and local governments use to procure wastewater treatment sludge handling and conveyance services, including liquid sludge hauling, transport equipment, and related treatment plant infrastructure. The recent opportunities under this code show that issuing bodies are primarily state environmental agencies and municipal water authorities soliciting sealed-bid contracts for the transport of treatment plant byproducts to disposal or processing facilities. The Maryland Environmental Service has posted multiple solicitations for liquid sludge hauling services requiring closed, watertight tanker trucks equipped with vacuum or pumping systems capable of operating at low pressures with appropriate hose sizes and power takeoff pumps. Contractors bidding under this code must demonstrate regulatory compliance with state and federal wastewater handling standards, hold documented experience in liquid waste hauling, and maintain appropriate county permits and health department vehicle approvals. The compensation structure is per-gallon pricing, with bidders submitting unit rates for base-year and multi-year option periods, and contracting entities retain unilateral renewal rights across multiple one-year option terms.

The Maryland Environmental Service accounts for the visible recent activity under this code, with two competitive sealed-bid opportunities posted in April and May 2026 for liquid sludge hauling across multiple wastewater treatment plants in central Maryland. The first solicitation (1262625, due May 26, 2026) covers transport from six school and residential treatment facilities to the Freedom District WWTP, with estimated annual volumes of 309,000 gallons; the second (1262665, due June 29, 2026) covers four plants in Washington and Frederick Counties totaling approximately 586,000 gallons annually and includes a Small Business Reserve set-aside for Maryland-certified small business vendors. Both contracts required electronic submission through the MES Procurement Portal and included mandatory pre-bid site visits. A third opportunity (SS202001) from the City of Holly Hill, Florida, posted in April 2026, represents a sole-source procurement for drive shaft replacement equipment at a water treatment plant, though this reflects equipment replacement rather than the sludge hauling services that dominate the code's recent activity under Maryland procurements.