Related Topics: Water Research

Water Research Products in the Science Inventory

Records 1 to 25 of 3503

Destabilization of Lead Pipe Scales in a Long-Term Vacant Home in Cincinnati (PRESENTATION)
this presentation covers an ongoing study at a Cincinnati house, following the progression of lead release from a lead service line with different amounts of stagnation time and water use. This presentation is essentially the same as the talk cleared for AWWA ACE 2017, with some...
Analysis of human mitochondrial DNA sequences from fecally polluted environmental waters as a tool to study population diversity (JOURNAL)
Mitochondrial signature sequences have frequently been used to study the demographics of many different populations around the world. Traditionally, this requires obtaining samples directly from individuals which is cumbersome, time consuming and limited to the number of individu...
An inventory of continental U.S. terrestrial candidate ecological restoration areas based on landscape context (JOURNAL)
Landscape context is an important factor in restoration ecology, but the use of landscape context for site prioritization has not been as fully developed. We used morphological image processing to identify candidate ecological restoration areas based on their proximity to existin...
Estimating virus occurrence using Bayesian modeling in multiple drinking water systems of the United States (JOURNAL)
Drinking water treatment plants rely on purification of contaminated source waters to provide communities with potable water. One group of possible contaminants are enteric viruses. Measurement of viral quantities in environmental water systems are often performed using polymeras...
A keyword approach to finding common ground in community-based definitions of human well-being (JOURNAL)
Ecosystem-based management involves the integration of ecosystem services and their human beneficiaries into decision making. This can occur at multiple scales; addressing global issues such as climate change down to local problems such as flood protection and maintaining water q...
The Role of Shellfish Aquaculture in Reduction of Eutrophication in an Urban Estuary (JOURNAL)
Land-based management has reduced nutrient discharges; however, many coastal waterbodies remain impaired. Oyster “bioextraction” of nutrients and how oyster aquaculture might complement existing management measures in urban estuaries was examined in Long Island Sound,...
The Roles of Biofilm Conductivity and Donor Substrate Kinetics in a Mixed-Culture Biofilm Anod (JOURNAL)
We experimentally assessed kinetics and thermodynamics of electron transfer (ET) from the donor substrate (acetate) to the anode for a mixed-culture biofilm anode. We interpreted the results with a modified biofilm-conduction model consisting of three ET steps: (1) intracellular...
Assessing the Nation's Coastal Waters....Better (PRESENTATION)
The USEPA has been assessing estuarine and coastal condition in the United States since 1999 via the National Coastal Assessment (NCA) and National Aquatic Resources Surveys (NARS) programs. Approximately 1500 randomly selected coastal sites were surveyed annually during summers ...
Understanding the Impacts and Meaning of Maintaining Detectable Disinfection Residuals in Drinking Water Distribution Systems: Controlling Waterborne Pathogens, Disinfection Byproducts, Organic Chloramines, and Nitrification (PRESENTATION)
: EPA Region 6, in collaboration with the Office of Research and Development and Office of Water (OW) in Cincinnati, Ohio, and the Louisiana Department of Health and Hospitals (LDHH), proposes a drinking water research project to understand how maintaining various drinking water...
Retrospective Case Study in Northeastern Pennsylvania, Study of the Potential Impacts of Hydraulic Fracturing On Drinking Water Resources (PUBLISHED REPORT)
This report describes the retrospective case study for northeastern Pennsylvania, which was conducted in Bradford and Susquehanna Counties where some of the most intensive unconventional gas production from the Devonian-age Marcellus Shale has occurred. Gas production from the M...
Retrospective Case Study in Southwestern Pennsylvania, Study of the Potential Impacts of Hydraulic Facturing on Drinking Water Resources (PUBLISHED REPORT)
This report describes the retrospective case study for southwestern Pennsylvania, which was conducted in Amwell, Cross Creek, Hopewell, and Mount Pleasant Townships in Washington County, locations that have witnessed unconventional gas production from the Devonian-age Marcellus S...
Retrospective Case Study in Killdeer, North Dakota, Study of the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources. (PUBLISHED REPORT)
This report describes the retrospective case study conducted near Killdeer, Dunn County, North Dakota. The Killdeer study area is the location of historical oil and gas production, with current unconventional oil and gas production occurring in the late Devonian/early Mississipp...
Retrospective Case Study in Wise County, Texas, Study of the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources (PUBLISHED REPORT)
This report describes the retrospective case study in north central Texas, conducted at three locations in Wise County where both conventional and unconventional gas production occurred in the past. Currently unconventional gas production occurs from the Mississippian-aged Barne...
Retrospective Case Study in the Raton Basin, Colorado, Study of hte Potential Impacts of Hydraulic Fracturing on Drinking Water Resources. (PUBLISHED REPORT)
This report describes the retrospective case study that was conducted in the Colorado portion of the Raton Basin, located within Las Animas and Huerfano counties. These locations are the focus of unconventional gas production of coalbed methane (CBM) from several coal-bearing st...
CHALLENGES IN MAINTAINING DRINKING WATER QUALITY AT THE TAP: CONTAMINATION WITH TOXIC LEAD (PRESENTATION)
Aging drinking water infrastructure in the US was given a grade of D (poor) by the American Society of Civil Engineers, and was voted as the most urgent of all societal infrastructure challenges. Legacy lead pipe, leaded solder and/or leaded brass are a particularly notorious old...
Green infrastructure and its catchment-scale effects: an emerging science (JOURNAL)
Urbanizing environments alter the hydrological cycle by redirecting stream networks for stormwater and wastewater transmission and increasing impermeable surfaces. These changes thereby accelerate the runoff of water and its constituents following precipitation events, alter evap...
Distribution, Variability, and Predictors of Urinary Bisphenol-A Levels in 50 North Carolina Adults over a Six-Week Monitoring Period (JOURNAL)
Bisphenol A (BPA) is commonly manufactured to make polycarbonate plastics and epoxy resins for use in consumer products and packaged goods. BPA has been found in several different types of environmental media (e.g., food, dust, and air). Many cross-sectional studies have frequent...
A synoptic survey of microbial respiration, organic matter decomposition, and carbon efflux in U.S. streams and rivers (JOURNAL)
We analyzed microbial respiration and ecoenzyme activities related to organic matter processing in 1879 streams and rivers across the continental US as part of the USEPA’s 2008-2009 National Rivers and Streams Assessment. Ecoenzymatic stoichiometry was used to construct mod...
The Application and Usefulness of Economic Analyses for Water Quality Management in Coastal Areas (JOURNAL)
Economic studies are increasingly sought as tools to contribute to water quality management in estuaries and coastal communities, yet little is known about how the results from existing studies have been received and utilized by the organizations who solicited them. We interviewe...
Quantification of mold contamination in multi-level buildings using the Environmental Relative Moldiness Index (JOURNAL)
The goal of this study was to evaluate the possible use of the Environmental Relative Moldiness Index (ERMI) to quantify mold contamination in multi-level, office buildings. Settled-dust samples were collected in multi-level, office buildings and the ERMI value for each sample de...
Living Shoreline on Martha's Vineyard: Monitoring & Assessing Marsh Stabilization, Restoration Benefits, and Nitrogen Removal (PRESENTATION)
Salt marshes provide a unique intertidal habitat between land and sea, making them one of the most diverse and productive ecosystems on Earth. Their ecosystem services are often undervalued, and are being degraded by multiple stressors such as human development and climate change...
Three-dimensional Modeling of Water Quality and Ecology in Narragansett Bay (PUBLISHED REPORT)
This report presents the methodology to apply, calibrate, and validate the three-dimensional water quality and ecological model provided with the Environmental Fluid Dynamics Code (EFDC). The required advection and dispersion mechanisms are generated simultaneously by the EFDC h...
Fluorescence Sensors for Early Detection of Nitrification in Drinking Water Distribution Systems: Interference Corrections and Feasibility Assessment (PRESENTATION)
It is hypothesized that soluble microbial products (SMPs) specific to nitrifying bacteria have unique fluorescence signals that can be monitored with fluorescence sensors.
Developing Fluorescence Sensor Systems for Early Detection of Nitrification in Chloraminated Drinking Water Distribution Systems (PAPER IN NON-EPA PROCEEDINGS)
Research is being conducted to develop fluorescent sensors to detect nitrification in drinking water distribution systems.
Status and Trends of Narragansett Bay and its Watershed: A Geographical Approach (PRESENTATION)
The Narragansett Bay Estuary Program developed 24 environmental indicators for its 2017 State of the Bay and its Watershed report with the collaboration of over 50 bi-state and regional partners. A geographical approach was undertaken at different scales using an array of geospat...