USGS - science for a changing world

Environmental Health - Toxic Substances

Investigations - Contaminants of Emerging Concern in the Environment

Contaminant Uptake by Terrestrial and Aquatic Organisms

Biosolids are the sludge generated by the treatment of sewage at wastewater treatment plants (WWTPs). WWTPs produce a variety of biosolids products for agricultural, landscape, and home use. Depicted in the diagram is an activated sludge tank at a wastewater treatment plant (upper left) and a holding area for biosolids (lower right). (The two photos are not from the same facility.)

Similar to contaminant occurrence in water resources, investigations on effects include research to answer fundamental questions: What compounds are bioaccumulating in animal tissue? At what levels do they occur? In what mixtures do they occur? Preliminary research on contaminant uptake by terrestrial and aquatic organisms includes:

Fish diagram

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Page Last Modified: Monday, 25-Apr-2016 15:41:16 EDT