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For the past several years, the U.S Environmental Protection Agency’s (EPA’s) Office of Research and Development (ORD), and the Metropolitan Sewer District of Greater Cincinnati (MSDGC) have been investigating the use of peracetic acid (PAA) as an alternative to, or in conjunctio...

Though estrogenic and androgenic contaminants have received extensive attention as endocrine disrupting and modulating chemicals causing water quality concerns, glucocorticoid agonism has been receiving increasing attention in aquatic systems. Of particular interest are synthetic...

Extraction of petroleum oil resources may result in oil spills in the aquatic environment. Active and passive satellites are generally limited in either spatial coverage, temporal revisit periods, or spatial resolution when tracking surface oil slicks. PlanetScope passive satelli...

These materials provide content for an interactive workshop exploring risk trade offs for water reuse management to be held at the 22nd Health Related Water Microbiology Conference. The workshop presents how disability  adjusted life years (DALYS) can be used to quantitative...

Nitrogen is essential in sustaining estuarine ecosystems, particularly lower trophic levels and filter-feeding organisms. However, excess nitrogen is an often-cited cause of coastal ecosystem decline. One of the largest sources of nitrogen in Narragansett Bay, RI, is effluent fro...

The Great Lakes Area of Concern (AOC) program was established to address Beneficial Use Impairments (BUIs) in aquatic ecosystems caused by historic anthropogenic degradation and habitat loss. The “R2R2R3” paradigm highlights the potential impacts that AOC program acti...

Aerobic biotreatment of groundwater relies on natural microorganisms to remove dissolved inorganic contaminants, such as ammonia, arsenic, manganese, and iron, in the presence of oxygen. This chapter discusses the target contaminants and regulatory concerns, biological removal me...

Large river-lake/reservoir systems, especially those found in the Western United States, face several daunting challenges precipitated by an uncertain climate and increasing water demands. While various legal frameworks govern long term water sharing and delivery obligations (e.g...

The Regional Monitoring Program for Water Quality in San Francisco Bay (RMP) uses a multi-faceted strategy for cost-effective emerging contaminant identification and monitoring prioritization to support management efforts. As part of this strategy, the RMP is adopting use of nove...

The Great Lakes are an important resource for communities and the environment, as the largest system of fresh water in the world. There are many threats to the health of the Great Lakes, including contaminants, habitat degradation, invasive species, and eutrophication. The Nation...

This presentation covers experiments that were conducted to compare the sampling of a stormwater detention basin via grab sampling, with an ISCO autosampler device, and with an EDNA sampler for recovery of Bacillus globigii spores a surrogate for Bacillus anthracis.  Three d...

This presentation is providing a brief background on GLTED and the type of research that is conducted to address research needs to support EPAs mission.  ORD provides the data, tools, and information that form the sound scientific foundation the Agency relies on to fulfill i...

Abstract: Despite the number of in vitro assays that have been recently developed to identify chemicals that interfere with the hypothalamic-pituitary-thyroid axis (HPT), the translation of those in vitro results into in vivo responses (in vitro to in vivo extrapolation, IVIVE) ...

This sub-product is the compilation of dendrometer data and meteorological data collected in Oregon's Cascade Mountains and Oregon's Coast Range.

This presentation will discuss the benefits of incorporating the NNI into StreamCat, providing annual time series (1987-2017) of nitrogen and phosphorus inputs, removal by crop harvest, and management relevant metrics for all 2.6 million stream catchments and watersheds across th...

Wetlands provide numerous ecosystem functions within their connected landscapes that improve water quality, including nutrient removal. Due to growing recognition of the role of wetlands in maintaining downstream water quality, there is an increasing emphasis on identifying exist...

Climate-induced changes in streamflow and nutrient loading have important implications for estuarine water quality. We present an empirical approach for estimating changes in the magnitude, timing, and duration of streamflow based on statistically downscaled projections from glob...

Cyanobacterial harmful algal blooms (cHABs) pose challenges for drinking water treatment plants (DWTPs) in maintaining water quality due to the algal organic matter and cyanotoxins they produce. While standards are upheld using enhanced chemical and physical treatment with increa...

This is a presentation to be potentially shared with ESTCP describing the lead service line testbed on the Edison Environmental Center. 

The occurrence of toxic metal(loid)s in surface freshwater is a global concern due to its impacts on human and ecosystem health. Conceptual and quantitative metal(loid) models are needed to assess the impact of metal(loid)s in watersheds affected by acid rock drainage. Few case s...

Suffolk County, New York is the eastern-most county on New York’s Long Island and is surrounded on all sides by coastal embayments impaired due to excess loading of nitrogen. Sources of nitrogen include atmospheric deposition and loading via groundwater from agricultural an...

The past 50 years have seen biomonitoring emerge as an essential means of generating the knowledge needed to inform protection and restoration of freshwater ecosystems. Despite the successes of biomonitoring, most freshwater ecosystems remain unmonitored. Moreover, degradation of...

Riparian functioning condition refers to a rating and description of the current ecological status of a reach of a riparian ecosystem in consideration of its potential hydrology, vegetation, and geomorphology. We assessed functioning condition of flowing riverbank areas of the Ba...

Muskegon Lake is a drowned river-mouth lake designated by the U.S. EPA in 1987 as a Great Lake Area of Concern. All nine of the lake’s beneficial use impairments have been approved for removal, and the region is awaiting final approval from EPA for official delisting. Altho...

Increased magnitude and frequency of precipitation events are some of the effects of climate change that most commonly impact urban tropical estuaries. The resultant flooding, in combination with a faulty wastewater infrastructure, exposes urban coastal communities to contaminate...