Related Topics: Water Research

Water Research Products in the Science Inventory

Records 1 to 25 of 3167

The Effect of Malathion on the Activity, Performance, and Microbial Ecology of Activated Sludge (JOURNAL)
Journal Article
Long term records of lake clarity as an indicator for final ecosystem goods and services of lakes (PRESENTATION)
We reviewed available long-term records of lake clarity (via secchi disc readings) as an indicator of final ecosystem goods and services of lakes. Lake water quality assessments are often based on biophysical indicators not explicitly or quantifiably linked to the ecosystem servi...
Testing of SWMM Model’s LID Modules (PRESENTATION)
EPA’s Storm Water Management Model (SWMM) is a computational code heavily relied upon by industry for the simulation of wastewater and stormwater infrastructure performance to . design and build multi-billion-dollar, multi-decade infrastructure upgrades. Since the 1970&rs...
Trends in Drinking Water Nitrate Violations Across the United States (JOURNAL)
Drinking water maximum contaminant levels (MCL) are established by the U.S. EPA in order to protect human health. Since 1975, public water suppliers across the U.S. have reported violations of the MCL to the national Safe Drinking Water Information System (SDWIS). Nitrate is on...
Improving our process understanding of methane emissions from a mid-latitude reservoir by combining eddy covariance monitoring with measurements of ebullition and hydrodynamics (PRESENTATION)
Reservoirs are a globally important source of methane (CH4) to the atmosphere, but measuring CH4 emission rates from reservoirs is difficult due to the spatial and temporal variability of the various emission pathways, including ebullition and diffusion. We used the eddy covarian...
IRIS Toxicological Review of Ethyl Tertiary Butyl Ether (ETBE) (Preliminary Assessment Materials) (ASSESSMENT DOCUMENT)
In August 2013, EPA released the draft literature searches and associated search strategies, evidence tables, and exposure response arrays for ETBE to obtain input from stakeholders and the public prior to developing the draft IRIS assessment. Specifically, EPA was interested in ...
Comprehensive trends assessment of nitrogen sources and loads to estuaries of the coterminous United States (PRESENTATION)
Sources of nitrogen and phosphorus to estuaries and estuarine watersheds of the coterminous United States have been compiled from a variety of publically available data sources (1985 – 2015). Atmospheric loading was obtained from two sources. Modelled and interpolated meas...
Climate, Clams, and a Changing Watershed: A time series analysis to quantify the impact of management and climate on water quality in the Potomac Estuary (PRESENTATION)
The Potomac River is the largest tributary of the Chesapeake Bay and has been a key study site in water quality research, beginning with work to address public health concerns such as safe drinking water and waterborne disease during periods of population growth and urbanization ...
Protocol for Detection of Bacillus anthracis in Environmental Samples During the Remediation Phase of an Anthrax Incident, 2nd Edition (PUBLISHED REPORT)
Report - Methods
A resilience framework for chronic exposures: water quality and ecosystem services in coastal social-ecological systems (PRESENTATION)
We outline a tailored resilience framework that applies ecosystem service concepts to coastal social-ecological systems (SES) affected by water quality degradation. Unlike acute coastal disturbances such as hurricanes or oil spills, water quality issues, particularly those relate...
Marsh soil responses to tidal water nitrogen additions contribute to creek bank fracturing and slumping (PRESENTATION)
Large-scale dissolved nutrient enrichment can cause a reduction in belowground biomass, increased water content of soils, and increased microbial decomposition, which has been linked with slumping of low marsh Spartina vegetation into creeks, and ultimately marsh loss. Our study ...
The Cyanobacteria Assessment Network - Recent Success in Harmful Algal Bloom Detection (NEWSLETTER ARTICLE)
Cyanobacteria blooms, which can become harmful algal blooms (HABs), are a huge environmental problem across the United States. They are capable of producing dangerous toxins that threaten the health of humans and animals, quality of drinking water supplies, and the ecosystem in w...
Using National Coastal Assessment Data to Model Estuarine Water Quality at Large Spatial Scales. (PRESENTATION)
The water quality of the Nation’s estuaries is attracting scrutiny in light of population growth and enhanced nutrient delivery. The USEPA has evaluated water quality in the National Coastal Assessment (NCA) and National Aquatic Resource Surveys (NARS) programs. Here we rep...
Assessment of Dry Wells for Stormwater Capture and Aquifer Recharge in the Arid and Semi-Arid Southwest (PRESENTATION)
GOAL: to evaluate the utility of innovative, distributed, low impact development (LID) infrastructure and best management practices (BMPs) for wet weather capture and drinking water aquifer recharge in the arid and semi-arid southwestern USA OBJECTIVES: Design, build, monitor t...
Suspect Screening and Non-Targeted Analysis of Drinking Water Using Point-Of-Use Filters (JOURNAL)
Monitored contaminants in drinking water represent a small portion of the total compounds present, many of which may be relevant to human health. To understand the totality of human exposure to compounds in drinking water, broader monitoring methods are imperative. In an effort t...
Barriers and Opportunities for the Use of Alternative Technologies to Reduce Nitrogen in Coastal Estuaries (PRESENTATION)
In coastal New England, many communities wrestling with nitrogen over-enrichment from insufficient wastewater management are considering alternative technologies to supplement traditional sewering technology. In particular, communities on Cape Cod, Massachusetts are actively comp...
Changes in nitrogen isotope ratios in estuarine biota following nutrient reductions to Narragansett Bay (PRESENTATION)
Increased nutrient inputs globally have resulted in widespread eutrophication to many coastal water bodies including Narragansett Bay. Efforts to reduce point source nitrogen load¬ings from waste water treatment facilities (WWTFs) and combined sewer overflows (CSOs) started i...
The Lives and Times of the Narragansett Bay Benthos: Biodiversity Trends over 182 Years (PRESENTATION)
Narragansett Bay has high benthic invertebrate biodiversity that supports many ecosystem functions and services. A master list was compiled of all benthic species collected from the Bay beginning in 1862, including a U.S. Bureau of Commercial Fisheries survey in 1871 and studies ...
Changes to habitats over time in Narragansett Bay and setting management targets using BCG approaches (PRESENTATION)
We compare changes in the distributions of seagrass, benthic, macroalgal, saltmarsh, and shellfish habitat in Narragansett Bay (U.S.A.) since the 1700s to changes in stressors and management decisions over the same time period, and describe a method that management programs can u...
The Effects of Source Water Quality on Drinking Water Treatment Costs: A Review and Synthesis of Empirical Literature - slides (PRESENTATION)
Watershed protection, and associated in situ water quality improvements, has received considerable attention as a means of mitigating health risks and avoiding expenditures at drinking water treatment plants (DWTPs). In this presentation, we review the literature linking raw wate...
Comparisons of Spatial Predictions of Conductivity on a Stream Network in an Appalachian Watershed (PRESENTATION)
We made spatial predictions of specific conductance based on spatial stream network (SSN) modeling to compare conductivity measurements of components of the network, such as headwaters, tributaries, and mainstem, which have different spatial extents in a study Appalachian watersh...
Quantifying the Recreational Value of an Estuary: A Transferable Method (PRESENTATION)
Coastal water quality impairment (excess bacteria and nutrients) due to failed septic systems and cesspools is a major concern for Cape Cod, Massachusetts because of its waters’ high economic and social value. High bacteria levels can lead to closures at bathing beaches. Nu...
How many people use the Three Bays estuary system for recreation? (COMMUNICATION PRODUCT)
Little is known about recreational use on estuaries like Three Bays. We are testing a practical approach to quantify recreational use of the Three Bays estuary system so we can better understand how many people are affected by changes in environmental quality. This involves count...
Metabolic Disruption Early in Life is Associated With Latent Carcinogenic Activity of Dichloroacetic Acid in Mice (JOURNAL)
Early-life environmental factors can influence later-life susceptibility to cancer. Recent evidence suggests that metabolic pathways may mediate this type of latency effect. Previously, we reported that short-term exposure to dichloroacetic acid (DCA) increased liver cancer in mi...
Assessing ecological conditions in the Great Lakes Connecting Channels using National Coastal Condition Assessment protocol (PRESENTATION)
The EPA Office of Water’s National Coastal Condition Assessment (NCCA) helps satisfy the assessment and antidegradation provisions of the Clean Water Act by estimating water, sediment, and benthic quality conditions in the Great Lakes nearshore on a five-year cycle starting...