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Radioactive fallout could have debilitating effects on drinking water and wastewater systems. At least some drinking water system operators have plans to mitigate the effects of a contaminated water source, but most, if not all, wastewater operators have no such plans.&nbsp; Both...

Legionella pneumophila (Lp) is an opportunistic drinking water pathogen that can cause infections through the inhalation of Lp-containing aerosols. Lp can occur in premise plumbing systems as these systems often have low disinfection residual, high surface area-to-volume ratios, ...

Trimethylbenzene (TMB; CAS 25551-13-7) is a commercially available mixture of three individual isomers: 1,2,4-, 1,2,3-, and 1,3,5-TMB. TMB isomers are produced during petroleum refining. TMB exposure in humans occurs primarily through inhalation, although ingestion of TMB isomers...

Drinking water storage tanks serve several important functions, which include but are not limited to providing an adequate water supply in the case of firefighting emergencies, power outages, water main breaks, or other system failures. The water level elevation in storage tanks ...

Manufacturing advancements in three-dimensional (3D) printing of plastic polymers have outpaced our understanding of exposure risks for domestic use. One understudied aspect is the release of metal additives incorporated into plastic polymers before and after printing. Metal addi...

The purpose of this research was to determine the viability of installing low-cost storm sewer retrofit devices in multiple locations within an urban watershed.  A major component of this was the necessity for designing, fabricating, and operation of such retrofits which are not ...

Acute and long-term exposure to per- and polyfluoroalkyl substances (PFAS) is of rising concern due to their persistent detection and abundance in the environment coupled with their potential for bioaccumulation. The replacement of legacy PFAS with ether-linked carboxylic acid (P...

The U.S. EPA&rsquo;s Homeland Security Research Program (HSRP) is charged with protecting human health and the environment from accidental and intentional releases of toxic chemicals and other threat agents. Such chemical agents include Fourth Generation Agents (FGAs), which repr...

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...

The purpose of this letter is to correct previously reported blood serum concentrations for PFO5DoA in people in Wilmington, North Carolina (NC), in 2017-2018 [1]. Perfluoro-3,5,7,9,11-pentaoxadodecanoic acid (known as PFO5DoA; Chemical Abstracts Service Number [CASN] 39492-91-6,...

Dissolved reactive phosphorus (DRP) export from agricultural areas is a leading cause of nutrient pollution in freshwater systems (e.g., the North American Great Lakes). A potential solution to mitigate the excessive release of DRP is the use of nutrient management. To evaluate t...

Reduced tillage management conservation practices (No-till and Reduced-till) are widely adopted in agriculture; however, understanding their overall effectiveness for water quality protection is challenging. A meta-analysis was conducted to understand and quantify the effectivene...

Lake Erie is threatened by eutrophication and harmful algal blooms due to excess nutrient loading from agricultural sources. To reduce nutrient loading to Lake Erie, widespread adoption of agricultural conservation practices (ACPs) has been proposed. However, identifying appropri...

In this study, proportional response addition (Prop-RA), a model for predicting response from chemical mixture exposure, is demonstrated and evaluated by statistically analyzing data on all possible binary combinations of the four regulated trihalomethanes (THMs). These THMs were...

These data were recently presented at SOT 2024 as a poster, and this sub-product will present the same data and analyses in a presentation at a local society meeting of endocrine disrupting chemicals NC (EDC-NC). Sprague-Dawley rat dams were exposed via oral gavage from GD18-22 t...

This report summarizes the results of infrastructure decontamination experiments performed at the WSTB.&nbsp; These experiments focused on simulating contamination of drinking water distribution pipes with a commonly available insecticide formulation containing malathion.&nbsp; M...

Presentation 01/08/2023 -International Conference on the Remediation and Management of Contaminated Sediments.  Topic: Analytical methods for PFAS in environmental media. Types of analytical and standard methods. Drinking Water Sample Methods Method 537 Method 533 Non-Drink...

Maternal exposure to regulated disinfection by-products (DBPs) during pregnancy has been linked with adverse birth outcomes. However, no human studies have focused on drinking water nitrosamines, a group of emerging unregulated nitrogenous DBPs that exhibits genotoxicity and deve...

Background: The number of chemicals present in the environment exceeds the capacity of government bodies to characterize risk. Therefore, data-informed and reproducible processes are needed for identifying chemicals for further assessment. The Minnesota Department of Health (MDH)...

EPANET, EPANET-MSX and the Water Network Tool for Resilience (WNTR) are powerful modeling tools for water distribution system modeling. This presentation highlights a range of work associated with these tools to provide real-world examples of how EPANET and associated tools are u...

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 ...

Many public utilities that use chloramine as a secondary disinfectant have adopted an annual maintenance practice called chlorine-burn. Chlorine-burn is a practice whereby free chlorine is permitted to flow through the distribution network for two to eight weeks. The purpose of a...

Abstract: This presentation will cover recent research on nutrient inputs, agricultural management and nitrate concentrations in soil solution and groundwater in the southern Willamette Basin&rsquo;s Groundwater Management Area (GWMA).&nbsp;Non-point sources are the predominant i...

Wildfire risk to aquatic ecosystems in the Pacific Northwest is a growing concern, but this risk is not equally distributed across the region. Furthermore, risks vary among valued endpoints and may be perceived differently by drinking water providers, forest managers, and fish bi...

&nbsp; Samples from 450 homes with shallow private wells throughout the state of Wisconsin (USA) were collected and analyzed for 44 individual per- and polyfluoroalkyl substances (PFAS), general water quality parameters, and indicators of human waste as well as agricultural inf...