Science Inventory

Next >>

Excess riverine phosphorus represents a preeminent catalyst for water quality degradation. Spatial mapping and characterization of the net gain and loss of riverine phosphorus help discern the critical source areas. Here, we developed a dataset encompassing phosphate (PO) and tot...

This chapter discusses available information on the occurrence of nitrification during water treatment and its potential impact on distribution system water quality. Nitrification (either intentionally encouraged or unknowingly) as part of the water treatment process can occur wh...

Nutrient pollution remains a major driver of water quality impairment globally, yet national-scale understanding of why nitrogen and phosphorus loads increase or decrease remains limited. Here we integrate three federal datasets—(1) flow-normalized riverine load trends of t...

This dataset includes the data and metadata associated with a year long watershed study to study the presence of antimicrobial resistance in surface waters within the East Fork watershed.  In July 2022 sampling and analysis of antimicrobial resistant bacteria in surface wate...

Following a natural disaster, communities need access to clean water not only for drinking but also for cooking, cleaning, mobile showers, laundry, and medical triage. Similarly, mitigation and recovery following a man-made incident, or an accident could require water treatment. ...

Although most bacteria in water can be effectively inactivated after chlorination during the wastewater treatment process, some may survive and spread waterborne diseases around the world. Their capacity to adapt to stressful conditions may make them even more hazardous. Herein, ...

The conventional application and purpose of microbial fuel cell (MFC) processes have been energy recovery as a form of electricity while treating wastewater. Given that the electricity is produced by exoelectrogenic bacteria in an MFC, monitoring electrical signals from MFCs can ...

Growing evidence is showing that microplastics (1 µm – 5000 µm) and nanoplastics (<1 µm) are increasingly being found in biological materials, including human bodies. Therefore, understanding the fate and transport of micro- and nanoplastics (M&NP) ...

This study reports on two full-scale pilot investigations conducted at wastewater treatment facilities in Cincinnati, Ohio (USA).It demonstrates two aspects: first, to assess the comparative disinfection performance of a dual disinfection treatment method employing peracetic acid...

Per- and polyfluoroalkyl substances (PFAS) require non-targeted analysis (NTA) to uncover novel structures and comprehensively characterize environmental contamination. While LC-ESI-MS has dominated PFAS NTA according to bibliometric analyses, this presentation demonstrates that ...

Efforts to constrain the negative environmental impacts of excess nitrogen (N) and phosphorus (P) are costly and challenging, due in part to inconsistent reporting of nutrient sources at temporal and spatial scales relevant for local decision making. To meet this challenge, the U...

During a combined sewer overflow (CSO) event, the capacity of a sewer system is exceeded, and untreated sewage, wastewater, and stormwater are released into nearby water bodies. CSOs occur in urban areas due to heavy precipitation, which is expected to occur more frequently and a...

This presentation covers historical and technical information regarding PFAS analytical methods for BOSC Meeting September 29-30, 2021.

Nutrient budgets, accounting frameworks that track nutrients (e.g. nitrogen and phosphorus_ as they move through landscapes, are foundational tools for understanding and managing environmental change. From food production to drinking water safety to greenhouse gas emissions, nutr...

US EPA previously released two static versions of the River Basin Export Reduction Optimization Support Tool (RBEROST), one version for the Upper Connecticut River basin (v1s), and one for the Puget Sound Basin (v2s).  RBEROST is designed to enable stakeholders to identify t...

The ability to conduct effluent fate and transport using standalone public domain software with a graphical user interface (GUI) is a core need for the management of receiving water quality. Mixing zone analysis including the assessment of effluent plume dilution and pollutant co...

Support for using diatom DNA metabarcoding in stream monitoring and assessment programs continues to grow, but its use often requires storing samples for months prior to extraction and analysis. Freezing without preservatives is a cheap, simple way to store and handle samples, bu...

The U.S. EPA sponsored a project to collect and catalog information from wastewater treatment wetlands into a computer database. EPA has also written a user friendly, stand-alone, menu-driven computer program to allow anyone with DOS 3.3 or higher to access the information in the...

Pharmaceutical contamination of water sources, particularly antibiotics, poses a critical public health and environmental challenge. Despite the frequent detection of meropenem, a last-resort antibiotic, in wastewater and its potential to promote antibiotic resistance, research o...

Surface water concentrations of per- and polyfluoroalkyl substances (PFAS) and potential for resulting biological effects were estimated in a study using polar organic chemical integrative samplers (POCIS) from 60 tributary sites within 20 watersheds in the Great Lakes Basin in 2...

End-of-life (EoL) chemical flow analysis (CFA) is essential for assessing environmental releases, exposure pathways, and promoting a safer circular economy for chemicals. This study introduces a hydrid multi-scale computational method that integrates data engineering, generic sce...

Over the past three years, since the rise of COVID and its many variants, EPA’s Office of Research and Development conducted a wide array of environmental public health research aimed to better understand COVID transmission, methods for protection and prevention from COVID transm...

The increased reliance on groundwater, with a finite supply, has created the need for state-of-the-art ways to manage groundwater resources to ensure resiliency, adequate supplies for sustained economic growth and domestic use, and safe drinking water. Managed Aquifer Recharge (M...

Coliphage are viral indicators of fecal contamination in water while acting as possible proxies for enteric viral pathogens. Depending on contamination levels, coliphage could be present at concentrations necessitating the use of concentrating filters. Hollow-fiber ultrafilters (...

Wastewater treatment plants (WWTPs) house diverse populations of microbial communities that are dynamic across treatment stages. Although viruses are relatively less studied compared to their bacterial counterparts, they are equally important players in WWTPs. In this study, we s...