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Poly- and perfluoroalkyl substances (PFAS) are oxidatively recalcitrant organic synthetic compounds. PFAS are an exceptional group of chemicals that have significant physical characteristics due to the presence of electronegative fluorine. PFAS persists in the environment, bioacc...

This is a requested presentation for the Association of Clean Water Administrators (ACWA) that discusses how ORD is the research arm of the EPA and provides the scientific foundation for EPA to execute its mandate to protect human health and the environment. An overview of the 6 ...

An analysis was conducted of the Chicago metropolitan region using the following integrated metrics: Fisher Information, Green Net Metropolitan Product, Net Energy, Ecological Footprint, Human Well Being Index, and Emergy. Data were aggregated as they were available, over a multi...

Plastic demands and production have considerably increased the quantity of spent plastics, out of which over 90% is either landfilled or incinerated. Both methods for handling spent plastics are susceptible to releasing toxic substances that negatively affect air, water, soil, or...

Bioinfiltration units were constructed at USEPA’s Edison Environmental Center to evaluate watershed to surface runoff ratio for sizing of green infrastructure controls. Three sizes of hydraulically isolated units were tested in duplicate with changes in aspect ratio of length fro...

Increased peak-flow magnitudes resulting from the growing intensity of extreme precipitation events might have adverse effects on existing infrastructure such as road culverts and drainage systems. Engineers and hydrologists often use precipitation intensity-duration-frequency (P...

Following a natural or manmade disaster, a community’s water treatment plant or distribution system may be rendered incapable of providing safe water to all or portions of their drinking water distribution system. The lack of safe drinking water can have serious effects on ...

Complex, dynamic human-environment coupled water systems require a paradigm shift from the traditional “siloed” (drinking water, wastewater, stormwater etc.) management approach and a move towards more holistic approaches to address the multiple issues facing municipal water syst...

The lack of widely available methods for distinguishing and quantifying organic chloramines has raised concerns for maintaining effective disinfectant residuals in chloraminated drinking water distribution systems (CDWDSs). This study provided quantitative estimation of dichloram...

Nature-based solutions are systems that use natural processes to improve sustainability. Green roofs and water quality wetlands are two examples of nature-based solutions that help to alleviate the negative effects of urbanization and agriculture, respectively. However, the full ...

Waterborne illness presents public health and economic challenges to communities with limited resources and impaired infrastructure. In Puerto Rico (PR), approximately one third of the 240 drinking water systems not served by the PR Aqueduct and Sewer Authority (PRASA) offer litt...

Waterborne illness presents public health and economic challenges to communities with limited resources and impaired infrastructure. In Puerto Rico (PR), approximately one third of the 240 drinking water systems not served by the PR Aqueduct and Sewer Authority (PRASA) offer litt...

Urban water systems are not self-contained units, economically or ecologically.  They rely on larger biophysical supports from natural capital.  The behavior of such systems as a whole and the interactions between subcomponents can be observed.  The optimization at system level t...

The goal for this study was to examine current municipal solid waste (MSW) management infrastructure of Onondaga County NY and provide scenarios with resilience, sustainability, and equity considerations in mind. Resilience can be defined as ability of the MSW management system t...

The goal for this report was to examine current municipal solid waste (MSW) management infrastructure of Davenport, Iowa and provide scenarios with resilience, sustainability, and equity considerations in mind. The City of Davenport, Iowa was selected as the project site through ...

Harvesting precipitation from rooftops can increase community climate resilience by supplementing water supplies and reducing stormwater runoff.  One of the barriers for implementing rooftop rainwater harvesting in the U.S. is limited risk-based treatment guidance for the us...

Urban water systems are not self-contained units, economically or ecologically.  They rely on larger biophysical supports from natural capital.  The behavior of such systems as a whole and the interactions between subcomponents can be observed.  The optimization at system level t...

presentation covering aerobic and anoxic biological treatment of groundwater for small systems

Per- and polyfluoroalkyl substances (PFASs) are a large group of perfluorinated organic compounds that have been in use since the 1940s for industrial, commercial, and consumer applications. PFASs are now considered as emerging contaminants and require remedial action because of ...

This Facilitator Manual provides the practical steps necessary for an agency or organization to implement a multi-session, participatory workshop for municipalities to engage their communities in the development of stormwater funding solutions. The Manual is a paired resource wit...

Biochar is one of the promising adsorbents for phosphorus remediation, as well as heavy metal removal from contaminated water. It is a solid material, prepared from biomass, like wood waste, by low temperature (< 700¿C) pyrolysis under a limited supply of oxygen. In this study, b...

Plastic growing demand and the increment in global plastics production have raised the number of spent plastics, out of which over 90% are either landfilled or incinerated. Both methods for handling spent plastics are susceptible to releasing toxic substances, damaging air, water...

Climate change is expected to result in more intense precipitation events that will affect the performance and design requirements of stormwater management infrastructure. Projected changes will vary regionally, and for events of different magnitude. Potential impacts include alt...

System-based accounting tools for such system-wide evaluations are showcased and provide in-depth analyses of the economic trade-offs, environmental impacts and system performances.&nbsp; The detailed holistic evaluation helps the decision-makers design more robust, effective and...

This is a presentation on how homeowners or developers can use EPA's National Stormwater Calculator for LEED v4 documentation for credits and also to help design their green infrastructure low-impact development controls.