Temporal variations in the depth-specific hydrochemistry and sewage-related microbiology of an urban sandstone aquifer, Nottingham, United Kingdom

A major water quality issue in urban areas underlain by a productive aquifer is the impact of modern recharge. Using a variety of sample sources including multi-level boreholes, this study has found detectable CFCs and SF 6 throughout the upper 50 m of the saturated aquifer beneath a suburb of Doncaster, indicating that modern (<50 year old) recharge has penetrated to at least this depth. Additional support for this deep penetration is provided by the detection of sulphite-reducing clostridia and faecal streptococci. Despite the upper aquifer being a poorly cemented sandstone, the residence time indicators suggest that some modern recharge is travelling via fracture systems in addition to that moving down by simple piston flow. However, the overall impact of 80 years of steady urbanisation on water quality in the aquifer beneath this suburb has in general been limited. This is attributed to a combination of factors including previous land use, dilution by direct recharge of rainfall through green-space areas including gardens, and locally high storage in the friable upper aquifer.

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“…Table 7 summarises the results. (Cronin et al 2003). In this study the counts in the multilevels, although frequent, were universally low.…”

Section: Microbiologycontrasting

confidence: 46%

Assessing the impact of modern recharge on a sandstone aquifer beneath a suburb of Doncaster, UK

et al. 2006

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“…Hydrogeological and hydrochemical conditions of urban groundwater can be disturbed by human activities (Lerner and Barrett 1996;Yang et al 1997;Barrett et al 1999;Lawrence et al 2000;Jeong 2001;Zilberbrand et al 2001;Foppen 2002;Lerner 2002;Cronin et al 2003;Powell et al 2003;Eiswirth et al 2004;Vázquez-Suñé et al 2005;Ellis and Rivett 2007). Groundwater quality in a region is largely determined by natural processes such as lithology, groundwater speed, quality of reloaded water, interaction of water with soil components and rock, and interaction with other types of aquifers.…”

Section: Groundwater Pollution In Urban Areasmentioning

confidence: 99%

“…The reason for such contamination is domestic wastewater discharge, animal husbandry waste and agricultural run-off from farms that consume large quantities of fertilizers (Ministry of Environment of Japan). Urban groundwater may be significantly contaminated with organic matter, nitrogen compounds, pathogenic microbes, and heavy metals when sewagecontaminated water or wastewater infiltrate the aquifer (Barret et al 1999;Zilberbrand et al 2001;Cronin et al 2003;Powell et al 2003).…”

Section: Groundwater Pollution In Urban Areasmentioning

confidence: 99%

Influences of natural and anthropogenic factors on surface and groundwater quality in rural and urban areas

Khatri¹,

Tyagi²

2014

Frontiers in Life Science

795

283

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Although water constitutes 71% of the earth's surface, only 0.3% of it is available as fresh water for human use. Moreover, the quality of fresh water in ground and surface systems is of great concern, as potable water needs to have appropriate mineral content. Ground and surface water quality in rural and urban environments is affected by both natural processes and anthropogenic influences. Because of this, water is becoming scarcer as the population increases across the world. Natural processes leading to changes in water quality include weathering of rocks, evapotranspiration, depositions due to wind, leaching from soil, run-off due to hydrological factors, and biological processes in the aquatic environment. These natural processes cause changes in the pH and alkalinity of the water, and also phosphorus loading, increase in fluoride content and high concentrations of sulphates. Anthropogenic factors affecting water quality include impacts due to agriculture, use of fertilizers, manures and pesticides, animal husbandry activities, inefficient irrigation practices, deforestation of woods, aquaculture, pollution due to industrial effluents and domestic sewage, mining, and recreational activities. These anthropogenic influences cause elevated concentrations of heavy metals, mercury, coliforms and nutrient loads. This paper studies the effects of natural processes and human influences in rural and urban aquatic systems. Pollution due to environmental parameters such as heavy metal pollution, heavy metals and bacterial and pathogenic contamination of both urban and rural areas is discussed in detail.

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“…Eisen and Anderson 1979;Jeong 2001;Cronin et al 2003;Choi et al 2005). They are generally conservative species; therefore, they reach the aquifer first.…”

Section: Resultsmentioning

confidence: 99%

The changes of groundwater chemistry of semi-confined buried valley aquifer during one decade of water exploitation

Dragon

2011

Environ Earth Sci

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This article presents the analysis of the temporal changes in water chemistry in a semi-confined aquifer (Wielkopolska Buried Valley aquifer, Poland) during one decade of water exploitation. It is shown that the groundwater contamination, as documented in a previous work, still persists and has lead to steady groundwater quality deterioration. The most intensive changes in water chemistry due to contamination are observed in the regions recognized earlier as the most vulnerable parts of the aquifer. The influence of contamination is effective despite implementation of groundwater protection activities. The travails of groundwater quality protection of the confined or semi-confined aquifers were accented.

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Temporal variations in the depth-specific hydrochemistry and sewage-related microbiology of an urban sandstone aquifer, Nottingham, United Kingdom

Cited by 51 publications

References 22 publications

Assessing the impact of modern recharge on a sandstone aquifer beneath a suburb of Doncaster, UK

Assessing the impact of modern recharge on a sandstone aquifer beneath a suburb of Doncaster, UK

Influences of natural and anthropogenic factors on surface and groundwater quality in rural and urban areas

The changes of groundwater chemistry of semi-confined buried valley aquifer during one decade of water exploitation

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