12,346 research outputs found

    Guidelines and Standard Operating Procedures for IDDE and Pollution Prevention/Good Housekeeping

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    In April 2003, the United States Environmental Protection Agency (USEPA) issued a National Pollutant Discharge Elimination System (NPDES) General Permit for Stormwater Discharges from Small Municipal Separate Storm Sewer Systems (MS4s). A total of 45 New Hampshire communities (six fully regulated and 39 partially regulated) became subject to Stormwater Phase II regulations based on their designation as Urbanized Areas according to the 2000 US Census

    Ensuring health and food safety from rapidly expanding wastewater irrigation in South Asia: BMZ final report 2005-2008

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    Wastewater irrigation / Institutions / Public health / Health hazards / Diseases / Cropping systems / Vegetables / Fodder / Livestock / Risk assessment / Economic evaluation / Surveys / GIS / Research priorities / South Asia / India / Pakistan / Hyderabad / Faisalabad / Musi River

    Onsite Wastewater Treatment: Implementation of a region-wide Integrated Risk Framework

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    Onsite wastewater treatment systems are becoming more widely accepted as long term wastewater treatment systems in areas not serviced by centralised sewerage systems. However, the current means of assessing site and soil conditions to provide adequate treatment and dispersal of domestic wastewater has been a major drawback in achieving specific performance outcomes. In Australia, it is the responsibility of local governments to assess and approve the use of onsite systems, and appreciable variations in standards and codes exist between different jurisdictions. The main aim of this research was to develop a scientific framework for assessing onsite systems, based on risk assessment and management principles thereby allowing more appropriate integration across local government boundaries. A case study illustrating the implementation of the risk framework is also presented

    Harnessing Markets for Water Quality

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    This issue of IMPACT is devoted to exploring and understanding the opportunities and challenges of harnessing markets to improve water quality. It looks at how markets could be implemented to address the growing concern of nonpoint source pollution as well as point sources. Recently, the EPA proposed a water quality trading proposal, which is summarized, reviewed, and critiqued

    Optimizing the Structure and Scale of Urban Water Infrastructure: Integrating Distributed Systems

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    Large-scale, centralized water infrastructure has provided clean drinking water, wastewater treatment, stormwater management and flood protection for U.S. cities and towns for many decades, protecting public health, safety and environmental quality. To accommodate increasing demands driven by population growth and industrial needs, municipalities and utilities have typically expanded centralized water systems with longer distribution and collection networks. This approach achieves financial and institutional economies of scale and allows for centralized management. It comes with tradeoffs, however, including higher energy demands for longdistance transport; extensive maintenance needs; and disruption of the hydrologic cycle, including the large-scale transfer of freshwater resources to estuarine and saline environments.While smaller-scale distributed water infrastructure has been available for quite some time, it has yet to be widely adopted in urban areas of the United States. However, interest in rethinking how to best meet our water and sanitation needs has been building. Recent technological developments and concerns about sustainability and community resilience have prompted experts to view distributed systems as complementary to centralized infrastructure, and in some situations the preferred alternative.In March 2014, the Johnson Foundation at Wingspread partnered with the Water Environment Federation and the Patel College of Global Sustainability at the University of South Florida to convene a diverse group of experts to examine the potential for distributed water infrastructure systems to be integrated with or substituted for more traditional water infrastructure, with a focus on right-sizing the structure and scale of systems and services to optimize water, energy and sanitation management while achieving long-term sustainability and resilience

    Final Report: Section 2. Data Collection

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    Addressing Uncertainty in TMDLS: Short Course at Arkansas Water Resources Center 2001 Annual Conference

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    Management of a critical natural resource like water requires information on the status of that resource. The US Environmental Protection Agency (EPA) reported in the 1998 National Water Quality Inventory that more than 291,000 miles of assessed rivers and streams and 5 million acres of lakes do not meet State water quality standards. This inventory represents a compilation of State assessments of 840,000 miles of rivers and 17.4 million acres of lakes; a 22 percent increase in river miles and 4 percent increase in lake acres over their 1996 reports. Siltation, bacteria, nutrients and metals were the leading pollutants of impaired waters, according to EPA. The sources of these pollutants were presumed to be runoff from agricultural lands and urban areas. EPA suggests that the majority of Americans-over 218 million-live within ten miles of a polluted waterbody. This seems to contradict the recent proclamations of the success of the Clean Water Act, the Nation\u27s water pollution control law. EPA also claims that, while water quality is still threatened in the US, the amount of water safe for fishing and swimming has doubled since 1972, and that the number of people served by sewage treatment plants has more than doubled

    Mapping a Better Future: How Spatial Analysis Can Benefit Wetlands and Reduce Poverty in Uganda

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    Analyzes and maps data on Uganda's wetlands and poverty rates to show where sustainable wetland management may be most effective in reducing poverty while protecting the ecosystem. Outlines lessons learned as well as policy and research recommendations
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