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The presentation prevents an overview of ORDS research on risk assessment and systems analysis of decentralized water reuse approaches to a group of graduate students in an interdisciplinary program on science, technology, engineering, and policy. The organizers are interest in p...

Protein processing operations include animal slaughtering, meat and poultry product production, and/or rendering of byproducts. These facilities utilize large volumes of water for hair/hide/feather removal, carcass washing, chilling, trimming and cutting, cooking, and cleaning/sa...

Onsite non-potable water systems (ONWS) collect and treat local source waters for non-potable end uses such as toilet flushing and irrigation. Quantitative microbial risk assessment (QMRA) has been used to set pathogen log10-reduction targets (LRTs) for ONWS to achieve the risk b...

The analysis of contaminants of emerging concern (CECs) has been an ongoing priority due to their potential for adverse effects on environmental and human health. Wastewater is a source for many CECs, and surface waters that receive wastewater discharge often serve as source wate...

Wastewater is a source for many contaminants of emerging concern (CECs) and surface waters receiving wastewater discharge often serve as source water for downstream drinking water treatment plants. Non-targeted analysis and suspect screening methods were used to characterize chem...

Atmospheric water harvesting can provide a high-quality water source for potable or non-potable applications.  However, like other water sources, collected condensate must be managed appropriately to prevent microbial growth.  Of particular concern are opportunistic pathogens suc...

Increasing water shortages and aging infrastructure have broadened interest in using alternative source waters for a range of end uses. Developing fit-for-purpose treatment approaches requires consideration of both the proximal risks of reuse-related exposures and the more distal...

Background/Objectives. Targeted chemical analyses, non-targeted analyses, and bioanalytical tools each provide a unique but incomplete understanding of the chemicals in a sample.  The US Environmental Protection Agency and US Geological Survey are collaborating to examine the sou...

The presence of numerous chemical contaminants from industrial, agricultural, and pharmaceutical sources in water supplies poses a potential risk to human and ecological health. Current chemical analyses suffer from limitations, including chemical coverage and high cost, and broa...

There is growing interest in promoting the treatment and beneficial re-use of production water from onshore oil & gas operations. A significant challenge to re-use strategies is the variable and complex chemical composition of produced waters. Produced waters (PW) may come from m...

Water is a defining issue of our time. Cities across the world are rethinking the traditional linear approach to water systems in the face of drought, extreme weather, and associated impacts on water quantity and quality. Reuse of alternative water sources for a variety of non-po...

Presentation to the Global Water Research Coalition (GWRC) on holistic assessments of water reuse configurations that consider both proximal, short term risks (e.g., acute infection following exposure) and distal, long term ones (impacts of climate change).

This presentation is an overview of ORD's drinking water, stormwater, wastewater and water reuse models that are being used to design, improve, optimize and enhance the resilience of water systems.  This is being presented by Regan Murray, Caleb Buahin, Terra Haxton and Jeff...

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...

Non-targeted analysis (NTA) studies of environmental systems generate a wealth of data that can be used to identify unexpected and/or unknown compounds that may affect human and ecological health. Though abundant environmental data ultimately enables a more complete assessment of...

Desalination drinking water systems and industrial processes generating high salinity streams require practical brine management options for disposal and/or treatment.  Treatment most often involves large capacity brine concentrating processes, on the order of 2000 m3/day, that r...

Roof runoff has the potential to serve as an important local water source in regions with growing populations and limited water supply. Given the scarcity of guidance regulating the use of roof runoff, a need exists to characterize the microbial quality of roof runoff. The object...

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...

Non-targeted analysis (NTA) utilizing high-resolution mass spectrometry is an increasingly popular tool for environmental science given its ability to facilitate exploratory exposomic investigations and identify contaminants of emerging concern. Generalized reporting standards, l...

The primary objectives of this project were to evaluate the disinfection performance, reliability, and energy use requirements of two small-scale UV-C LED water disinfection units (e.g., 10 gallons per minute (gpm) rated sizes) for a variety of test conditions. Test conditions in...

The past 30 years have seen the emergence and proliferation of isothermal amplification methods (IAMs) for rapid, sensitive detection and quantification of nucleic acids in a variety of sample types. These methods share dependence on primers and probes with quantitative PCR, but ...

Antimicrobial resistance (AMR) has been identified as one of the top medical issues worldwide, leading many countries to place greater emphasis on combating resistant bacteria through a multipronged, coordinated approach.  A consensus has emerged among the greater public hea...

Antimicrobial resistance (AMR) has been identified as one of the major public health threats of the 21st  Century. In 2019, 2.8 million American were infected with antibiotic resistant bacteria, leading to over 35,000 deaths and between $21-24 billion in health care costs. G...

This talk summarizes our current research on decentralized water systems, focuses on both our development of risk-based guidance for fit-for-purpose reuse of alternative waters and integrated assessment of  the life cycle costs/impacts of different decentralized system scena...

Increasing water shortages and aging infrastructure have broadened interest in using alternative source waters for a range of end uses. Developing fit-for-purpose treatment approaches requires consideration of both the proximal risks of reuse-related exposures and the more distal...