Sludges from your sump or oil/water separator could be a hazardous waste. You will need to test the sludge at a professional laboratory to determine if it is hazardous, or save testing costs by assuming the waste is hazardous and by managing it accordingly.

  • have the sludge tested by a state licensed laboratory when pumped out. Keep all testing records for 3 years.
  • contract with a permitted hazardous waste hauler to manage your sludge waste properly if it is determined to be a hazardous waste
  • put hazardous sludge in the trash dumpster or on the ground
  • use a septic tank pumping service to remove this sludge

For more information concerning the proper handling of sump sludges, contact the Florida Department of Environmental Protection, Bureau of Solid and Hazardous Waste ( or the Hinkley Center for Solid and Hazardous Waste Management ( This information is offered only as guidance. Specific requirements may vary with individual processes and/or businesses.