Pathogen contamination is a major cause of stream impairments. The sources of impairment and health risks induced by water-borne pathogens are extensively reported (Table2). In the U.S. pathogen contamination is the leading cause of stream water pollution. The EPA’s National Water Quality Invento...
A new computer-generated map shows (in a generalized way) the susceptibility of Wisconsin's groundwater to contamination. Physical characteristics of the geologic materials that overlie groundwater served as the basis of the map. Many of these materials offer groundwater a certain amount of ...
; and air contamination, degassing and fractionation of gas tracers during sampling (Stute and Schlosser, 2000). The interpretation of groundwater ages from radioactively decaying isotopes is subject to uncertainty, since the input concentrations (or activities) used in such calculations are often ...
Flow noise contamination can reduce the correlation between broadband shipping noise and the frequency bands used as anthropogenic noise indicators31, making these indicators less effective. Since flow noise increases with decreasing frequency29, lower frequency bands are more affected, particularly the 63...
However, these initiatives must cover more land than simply major cities; they must also address knowledge gaps and sources of contamination in the river's upper reaches, including states like the UK and HP. Preserving the ecological integrity of the Yamuna requires concerted action across political...
in order to take decisions regarding groundwater management in Jaunpur area, people should be informed about how to avoid and control groundwater contamination as well as reduce the influx of hazardous contaminants. Consequently, a hydro-geochemical study was conducted to assess the chemistry of gro...
Electrical resistivity and very low frequency electromagnetic induction surveys were carried out at a site of shallow hydrocarbon contamination in Utah County, Utah. Previously installed monitoring wells facilitated analysis of water chemistry to enhance interpretation of the geophysical data. The electrical ...
Research on regional groundwater resources and quality in the UK has often focussed on shallow aquifer systems (less than around 100 m depth), because of greater access and use, and greater potential vulnerability to contamination from surface activities. However, interest in the hydrogeochemical...
(or urban) spillover, effluent-rich mountain waters, filtering of soil sullying, and point source water contamination release from modern or polluted water treatment facilities [58,68,69,70,71,72,73]. The most recognized chemical constituents are Ca, PO4, NO3, Na, K, and Cl, which are ...
(0 ˂ Igeo ≤ 1), an indication of slight impact of Fe in the contamination of water. TheIgeovalues of Fe in S13and S15lie in the range (1 < Igeo < 2), which can be categorized in moderately contaminated status. Table10further shows that theIgeovalues of Zn ...