This report is a summary of a WERF/NOWRA workshop on Research Needs in Decentralized Wastewater, Stormwater, and Related Fields held on March 14-15, 2007 in Baltimore, MD. The purpose of the workshop was to build future visions, identify research gaps, gain guidance on promising avenues for investment, and begin collaboration discussions within the U.S. and the global community. Participants included U.S. and international professionals and policymakers in decentralized wastewater, stormwater, and related fields. The report includes a literature review which provides an overview of some of the research completed since 2002 related to decentralized wastewater ES&E priorities and to summarize current research in ES&E related to decentralized stormwater (Appendix G).

The literature review document summarizes research related to the environmental science and engineering (ES&E) of decentralized stormwater and wastewater that has taken place since the National Decentralized Water Resources Capacity Development Project's (NDWRCDP's) 2002-2003 Training, Research, and Development Plan (2002) was published. A number of earlier publications were also reviewed to provide context.

The 2002-2003 Plan identified 22 research priorities within the field of wastewater environmental science and engineering. This publication presents an overview of some of the research done in those areas since then, and also provides a summary of research conducted between 2000 and early 2006 in ES&E related to decentralized stormwater.