NIGP 88531: Biological Maintainers (Bacteria, Enzymes, etc.)

NIGP 88531 Biological Maintainers (Bacteria, Enzymes, Etc.), an Item code, covers microbial cultures, enzyme products, and biological inoculants used by state and local governments to optimize treatment processes in water, wastewater, and biosolids management. Recent solicitations show state and local buyers procuring proprietary bacterial and fungal consortia for biosolids composting, specialized microbial testing supplies for drinking water and recreational water quality assurance, and biological system rehabilitation and restoration at water reclamation facilities. The code draws activity across state environmental agencies, county water and environmental services departments, municipal water utilities, and county public works operations. The issuing bodies span environmental protection departments, water resources divisions, and public health laboratories conducting testing for coliform bacteria, Legionella pneumophila, enterococci, and other pathogens regulated under federal water safety standards.

Geographic activity concentrates in Florida and California, with additional solicitation activity from Georgia, Illinois, and Minnesota through cooperative purchasing frameworks. Representative recent opportunities include Hillsborough County's February 2026 sole source procurement of proprietary inoculant from HQ Compost Holdings, LLC, for biosolids composting at an estimated five-year cost of $515,625.00; Escambia County's July 2026 RFP (due August 14, 2026) for Bio-Health Pod Systems equipment and technical services to evaluate stormwater treatment technology demonstration, funded through the Florida Department of Environmental Protection's Innovative Technology Grant Program; Eastern Municipal Water District's June 2026 RFP (due July 24, 2026) for biofilter rehabilitation and restoration at the Perris Valley Regional Water Reclamation Facility in California; and the Illinois Department of Public Health's April 2026 sole source procurement from IDEXX Distribution, Inc., for EPA-approved water microbiology testing supplies and reagents supporting drinking water testing, well monitoring, and Legionella detection ($216,689.02 over two years). Activity reflects both routine chemical and biological supply contracts and specialized technology evaluation projects tied to stormwater and wastewater innovation initiatives.