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Showing 1 to 20 of 84 for “"Groundwater Quality"”.
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Three screening tests used to evaluate groundwater quality
The recent emergence of the critical problem of groundwater contamination due to materials leaching from toxic waste disposal sites and other sources has had a sobering impact on society. The rash of unexpected contamination has led to a plethora of legislation designed to address this problem. …
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Investigation of Groundwater Quality in Unincorporated Greene County, Missouri
Groundwater is a vital resource for the people of Greene County, Missouri. Maintaining a safe quality of this resource is increasingly being recognized as a problem. This is due in large part to the steady growth of this area coupled with potentially hazardous conditions that exist in the physical …
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Stochastic programming with recourse applied to groundwater quality management
Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 1988.
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Geochemical and Microbial Controls of Groundwater Quality in Northwestern Liberia
… gaps and develop a comprehensive snapshot of groundwater quality in the region surrounding Monrovia, the capital city. A novel protocol to collect and preserve microbial DNA from groundwater under tropical field conditions lacking a constant source of electricity was employed and yielded high …
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Hydrogeologic Controls on Groundwater Quality in the West Mamprusi Area, Northern Ghana
In the Northern Region of Ghana where groundwater is scarce and borehole success rates are low, there are still large gaps in groundwater quality research. Generally, groundwater is a safer source of drinking water than surface water, but it can contain naturally occurring elements, such as …
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Evaluation of Groundwater Quality in Paleozoic Aquifers Using GIS Techniques, Central Texas
<p>Lab analyses of groundwater chemistry from monitoring wells completed in the Paleozoic Aquifers surrounding the Llano Uplift of Central Texas has been recorded and made available to the public through the Texas Water Development Board (TWDB). This study evaluated the results of these data dating …
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The optimal design of groundwater quality monitoring networks under conditions of uncertainty
… network to provide initial detection of groundwater contamination at a waste disposal facility is complicated by uncertainty in both the characterization of the subsurface and the nature of the contaminant source. In addition, monitoring network design requires the resolution of multiple …
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Groundwater quality assessment in the Ngaka Modiri Molema District using the Water Quality Index
In the conducted research, the groundwater quality of different boreholes located in the Ngaka Modiri Molema District (NMMD), more specifically Ratlou, Ditsobotla, and Tswaing local municipalities (LM), for drinking, livestock, and irrigation purposes were assessed. The obtained water quality …
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Geophysical characterization of onsite wastewater treatment system effects on groundwater quality, eastern North Carolina
… source of pollution that can result in water quality degradation in groundwater and surface water. Locating OWS wastewater plumes in the subsurface often requires extensive site instrumentation and monitoring. The application of capacitively coupled resistivity (CCR) surveys offers a time …
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Hydrogeochemical evaluation and groundwater quality assessment for drinking and irrigation purposes in Bushbuckridge, South Africa.
… evaluating the hydrochemistry and assessing the quality of groundwater for drinking and irrigation purposes. Groundwater samples (n= 40) were collected from different boreholes in different locations around the study area. Groundwater hydrochemical parameters including pH, total dissolved solids …
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Evaluating the Effectiveness of Regulatory Stormwater Monitoring Protocols on Groundwater Quality in Urbanized Karst Regions
… runoff is one of the greatest threats to water quality in the United States today, particularly in urban karst settings. In these settings, the use of karst features and injection wells for stormwater management results in virtually untreated water being directed into the karst aquifer. …
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Hydrochemical Assessment and Modelling of Groundwater Quality of an Urban Aquifer Near A Sanitary Landfill
Groundwater supply is crucial to both anthropogenic and industrial activities in Canada. In Saskatchewan, around 63 percent of municipalities rely on groundwater as their primary water supplies. Recent data suggested groundwater quality in Condie aquifer might have been compromised due to the …
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Shallow Groundwater Quality in Alberta (Canada) with a Focus on the Occurrence of Nitrate and Methane
… the hydrogeochemistry and redox state of shallow groundwater (< 150 mbgs) in Alberta, with a focus on the occurrence of nitrate and methane. Chemical analyses of > 60,000 groundwater samples collected from landowner wells (part of the Alberta Health Services dataset) were interpreted revealing a …
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Effects of siting boreholes and septic tanks on groundwater quality in Saint Bonaventure Township of Lusaka District
… occur through natural filtration. A study on groundwater that was conducted in 2010 in selected areas of Lusaka showed high levels of contamination with bacteria. The general objective of the study was to assess the effect of siting boreholes and septic tanks in the same area on the quality of …
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Effects of siting boreholes and septic tanks on groundwater quality in Saint Bonaventure Township of Lusaka District
… occur through natural filtration. A study on groundwater that was conducted in 2010 in selected areas of Lusaka showed high levels of contamination with bacteria. The general objective of the study was to assess the effect of siting boreholes and septic tanks in the same area on the quality of …
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Geographic Information System Methodologies to Evaluate Relationships Between Land use and Groundwater Quality in South Central Kentucky
… for a holistic approach to the study of karst groundwater contamination. While karst groundwaters supply water to a large percentage of the earth's population, its complex environments often have lacked the scientific examination and conservation measures typical of non-karst regions. In this …
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The effect of waste stabilization pond seepage on groundwater quality of shallow aquifers in eastern North Dakota
… of waste disposal and may not adversely affect groundwater quality. In order to achieve efficient treatment, the ponds must be built in sediment that has permeability low enough to inhibit excessive percolation of wastewater into the subsurface. Some North Dakota cities have not met this basic …
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Surface and groundwater quality impacts of conservation tillage practices on burley tobacco production systems in Southwest Virginia
This study measured sediment, nutrient and pesticide edge-of-field and deep percolation losses from conventional tillage (CT), strip tillage (ST), and no-till (NT) treatments in a burley tobacco production system. The field experiment results show that the CT treatment yielded more total runoff, …
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Development of a Procedure to Evaluate Groundwater Quality and Potential Sources of Contamination in the East Texas Basin
… natural and anthropogenic contaminant sources of groundwater quality in the East Texas Basin. Four aquifers were studied, Sparta, Queen City, Carrizo and Wilcox. In this study, Carrizo- Wilcox is considered as one aquifer, and Sparta-Queen City as another. These aquifers were divided into depth …
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