The Third Biennial Synfuels Wastewater Workshop, sponsored by the US Department of Energy, Morgantown Energy Technology Center, has contributed valuable information to the technical data base on pollution control options for the treatment of wastewaters from synfuel facilities. The results of the research presented at this third biennial workshop have added significantly to the data base previously established from the prior workshops under the sponsorship of the Office of Environmental Control Technology, US Department of Energy. The significant finding of this recent workshop is encouraging in that the consensus of opinion was that sufficient information is now available to design and construct a commercial-scale facility, albeit conservatively, which can adequately treat synfuel wastewaters. It was agreed however that some uncertainties still exist with respect to wastewater characterization and the performance of various wastewater treatment processes which could be resolved by further tests at the pilot-scale level. It is hoped that the findings of this workshop will provide guidance for future synfuels wastewater research activities. Areas which were highlighted for continued research include the investigation of innovative wastewater treatment methods (both physicochemical and biological) which can significantly reduce processing costs over conventional treatment schemes; investigation of the effects of stream and sample reliability and representativeness on conceptual design studies and pilot plant operations; more detailed characterization of organic compounds in synfuel condensates; and the determination of potential health and ecological effects of refractory constituents in synfuel wastewaters. Abstracts were prepared for 19 status reports for inclusion in the Energy Data Base.