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INNOVATIVE URBAN WET-WEATHER FLOW MANAGEMENT SYSTEMS
Citation:
Heaney, J. P., R. Pitt, R Field*, AND C Y. Fan*. INNOVATIVE URBAN WET-WEATHER FLOW MANAGEMENT SYSTEMS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-99/029 (NTIS PB99-151359), 1999.
Impact/Purpose:
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Description:
This report describes innovative methods to improve wet weather flow (WWF) management systems, that provide drainage services at the same time as decreasing stormwater pollutant discharges, for urban developments of the 21st century. Traditionally, wet-weather collection systems were designed to remove stormwater from the urban area as quickly as possible. This design approach often simply transferred the problem from upstream to downstream areas. New urban water management principles, methodologies, and case study are presented that might permit the development of more sustainable systems by integrating the traditionally separate functions of providing water supply, collecting, treating, and disposing of wastewater, and handling urban wet-weather flows. Integration can be achieved by designing neighborhood scale, integrated infrastructure systems, and reuse of treated wastewater and stormwater for nonpotable purposes. Hybrid collection systems, control of toxic pollutants at critical source areas, and oversized sewer systems providing storage in the sewers as part of a realtime control system may be attractive alternatives for 21st century collection systems. Lastly, new institutional arrangements for implementing urban water infrastructure are discussed.