Related Topics: Water Research

Water Research Products in the Science Inventory

Records 1 to 25 of 4574

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Juvenile Detention Center Drinking Water Lead Source Investigation in Region 6 (PRESENTATION)
A juvenile detention facility in EPA Region 6 performed EPA 3T’s sampling at drinking water taps in their juvenile detention center and found one sample, a kitchen stand pipe nozzle, contained 7.7µg/L of lead. After finding this sample, the decision was made to identi...
A Model for Estimating the Impact of Orthophosphate on Copper in Water (JOURNAL)
The nature of copper-phosphate minerals in drinking water distribution systems has remained largely unsolved despite being an important link to reducing cuprosolvency. Important copper-phosphate solids associated with drinking water tend to be amorphous and form very fine layers ...
25 Years of Water Quality Change in Rhode Island Lakes and Ponds (SFS) (PRESENTATION)
The University of Rhode Island’s Watershed Watch Volunteer Monitoring Program has been collecting water quality data on dozens of Rhode Island lakes and ponds for over 25 years, allowing exploration of long-term trends in common water quality parameters. Not all lakes and p...
Recreation and Water Quality in New England (PRESENTATION)
The Rhode Island Department of Health is responsible for coordinating Rhode Island's state, town, and private beach managers to communicate monitoring protocols and beach use concerns. We will be presenting the work from multiple efforts to calculate recreational use of coastal w...
Nutrient dynamics in a tropical urban estuary indict unanticipated nitrogen sources as contributing to environmental health problems—a case study from San Juan, Puerto Rico. (PRESENTATION)
Coastal cities in tropical areas are frequently low-lying and vulnerable to the impacts of flooding and storms. San Juan, Puerto Rico is a good example of this. The city is built around the San Juan Bay Estuary (SJBE), a complex of lagoons and channels. A critical stretch of the ...
Watershed Management Optimization Support Tool (WMOST): Cost-effective integrated water management (PRESENTATION)
The purpose of the workshop is to introduce participants to the concept of integrated water resource management (IWRM) and to train federal, state, tribal, municipal/utility, nongovernmental organizations, and consultants in the use and applications of EPA's Watershed Management ...
Disinfection and flushing of aircraft water systems (SUMMARY)
This project focused on identifying the bacteria that are the potential sources of positive total coliform assays, on locating potential hotspots for bacterial colonization within aircraft plumbing materials, and on investigating the effectiveness of the airline industry’s curren...
Determining seagrass abundance in southern New England waters using high resolution Landsat 8 imagery-Preliminary Results from Summer 2018 (PRESENTATION)
Seagrasses have long been recognized as a habitat providing many important ecological services. Thus, this habitat is afforded protection under the federal Clean Water Act and many state Wetlands Protections Acts. Local, state and federal government natural resource managers ar...
Unusual biogeochemistry in a tropical, urban estuary, and the case of the clogged canal. (PRESENTATION)
Coastal cities in tropical areas are frequently low-lying and vulnerable to the impacts of flooding and storms. San Juan, Puerto Rico is a good example of this. The city is built around the San Juan Bay Estuary (SJBE), a complex of lagoons and channels. A critical stretch of the ...
25 Years of Water Quality Change in Rhode Island Lakes and Ponds. (PRESENTATION)
The University of Rhode Island’s Watershed Watch Volunteer Monitoring Program has been collecting water quality data on dozens of Rhode Island lakes and ponds for over 25 years, allowing exploration of long-term trends in common water quality parameters. Not all lakes and p...
Social Acceptance of Alternative Nutrient-Reduction Technologies in Estuaries (PRESENTATION)
Implementation of nutrient-reduction technologies to reduce loading to estuaries requires agreement by local communities to site, permit, fund, install, maintain, and monitor those technologies. This means federal, state, and local decision makers must trust the technologies to e...
Wading through the data: exploring relationships between human perceptions and biophysical water quality in coastal waters (PRESENTATION)
Water quality perceptions influence people’s preferences for visiting coastal areas and willingness to participate in activities on or near the water. They also influence people’s social values for a waterbody, sense of place, support for protection of a waterbody, an...
INFLUENCE OF WATER QUALITY ON SENSE OF PLACE IN COASTAL RECREATION AREAS (PRESENTATION)
Sense of place has been identified as a cultural ecosystem service for use in valuation, yet, to date, there has been little assessment of sense of place for coastal areas and the impact of water quality degradation on those attitudes. In a recent survey on coastal recreation in ...
Increasing Chloride in Rivers of the Conterminous U.S. and Linkages to Potential Corrosivity and Lead Action Level Exceedances in Drinking Water (JOURNAL)
Corrosion in water-distribution systems is a costly problem and controlling corrosion is a primary focus of efforts to reduce lead (Pb) and copper (Cu) in tap water. High chloride concentrations can increase the tendency of water to cause corrosion in distribution systems. The ...
Electrically heatable carbon nanotube point-of-use filters for effective separation and in-situ inactivation of Legionella pneumophila (JOURNAL)
Opportunistic waterborne pathogens (e.g., Legionella spp.) may persist in water distribution systems despite municipal chlorination and secondary disinfection and can cause health care-acquired infections. This warrants development of novel pathogen removal and/or inactivation sy...
Managing Naturally Occurring Ammonia in Ground Water Systems (PRESENTATION)
Effects of Elevated Ammonia Levels in Source Water and Drinking Water • Biological fouling of filters • Wastewater discharge limits • Oxidant/chlorine demand • Difficulty complying with on C∙t requirements • Interferes with As(III) oxidation • Iron/manganese removal (?) ...
Urbanisation alters fatty acids in stream food webs (JOURNAL)
Fatty acids are essential to macroinvertebrate growth and reproduction and can indicate food web structure and nutritional quality of basal resources. However, broad‐scale examinations of how catchment land cover and associated stressors affect the proportions of fatty acid...
Defining freshwater as a natural resource: a framework linking water use to the area of protection natural resources (JOURNAL)
Purpose While many examples have shown unsustainable use of freshwater resources, existing LCIA methods for water use do not comprehensively address impacts to natural resources for future generations. This framework aims to (1) define freshwater resource as an item to protect w...
Use a Hold Study to Assess Distribution System Influent Water Quality (JOURNAL)
The US Environmental Protection Agency’s Drinking Water Optimization Program promotes the use of a kinetic study to assess DS influent residual stability. Because DS influent water samples are collected and held for a predetermined time before analysis, the study is common...
Autonomous underwater glider observations of nearshore-offshore gradients in southern Lake Ontario during 2018 CSMI (PRESENTATION)
High resolution, continuous observations of water quality are required to improve understanding of the rates and mechanisms of mixing between nearshore and offshore areas in the Great Lakes, however obtaining observations required for this understanding is difficult using traditi...
Overview of research and the contribution of the US Environmental Protection Agency (USEPA)/Office of Research and Development (ORD) to the 2017 Lake Huron Cooperative Science and Monitoring Initiative (CSMI). (PRESENTATION)
EPA ORD participates in multiple monitoring and assessment programs on the Great Lakes to address science and management priorities of the Office of Water, the Great Lakes National Program Office, Lake Partnerships, and State agencies. Programs’ objectives are driven by the...
Effectiveness of Point-of-Use/Point-of-Entry Systems to Remove Select Per- and Poly- fluoroalkyl Substances from Drinking Water (JOURNAL)
Per- and poly-fluoroalkyl Substances (PFAS) contamination of groundwater sources in the U.S. is a widespread problem for the drinking water industry. Well water supplies in the municipalities of Fountain, Security, and Widefield, Colorado, contain Perfluorooctanoic Acid (PFOA) a...
Dynamics of the Physiochemical and Community Structures of Biofilms under the Influence of Algal Organic Matter and Humic Substances (JOURNAL)
This study aims to investigate the effects of AOM and HS-impacted water in biofilm development under unchlorinated drinking water distribution system (DWDS) conditions. Simulated DWDSs were constructed and operated for 168 days. The formation, development, physiochemical characte...
Large-scale implementation of standardized quantitative real-time PCR fecal source identification procedures in the Tillamook Bay Watershed (JOURNAL)
Rivers in the Tillamook Watershed play a vital role in supporting a thriving dairy, shellfish, and recreational industry, as well as providing a safe water resource for local human and wildlife populations. Unfortunately, fecal pollution in these waters are at times too high to ...
Regulations and OIG* and Impact on Biosolids Master Planning (PRESENTATION)
EPA is the regulating body for land application of biosolids. The agency was mandated through the Clean Water Act to regulate this material. The regulations that govern biosolids are often referred to as the 503 regulations. This presentation describes the current biosolids 503 ...
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