The Influence of Anthropogenic Contamination on the Groundwater Chemistry of a Semi-confined Aquifer (The Wielkopolska Buried Valley Aquifer, Poland)

Dragon, Krzysztof

doi:10.1007/s11269-007-9165-0

Cited by 23 publications

(22 citation statements)

References 14 publications

(15 reference statements)

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“…Consequently, interpreting the natural changes in the groundwater chemistry is difficult. For this reason, the data subset that is influenced by natural geochemical processes (i.e., not affected by human activity) was analysed using the method presented by Dragon (2008). The results of the FA were helpful in distinguishing between uncontaminated and contaminated groundwater.…”

Section: Resultsmentioning

confidence: 99%

Identification of groundwater chemistry origins in a regional aquifer system (Wielkopolska region, Poland)

Dragon

Górski

2014

Environ Earth Sci

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This paper describes the origin of the groundwater chemistry in the regional aquifer located in the Wielkopolska region of western Poland. Factor analysis was used for the identification of geochemical processes that influence the groundwater chemistry. Two groups of processes were identified: anthropogenic (i.e., caused by groundwater contamination) and geogenic (i.e., caused by natural geochemical processes). Based on a background of the natural variations in the groundwater chemistry, the effect of upward groundwater flow from the deep part of the flow system on the groundwater chemistry was identified. The boron concentrations and isotope data allowed for the identification of zones of relatively old groundwater. The spatial distribution of fluoride concentrations allowed for the identification of recharge zones. This study demonstrates the general usefulness of groundwater chemistry differentiation for supporting identification of groundwater flow patterns. It also demonstrates the importance of using chemical data to evaluate the connectivity between different aquifers. These interpretations can be used for better management of water resources on a regional scale.

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Section: Resultsmentioning

confidence: 99%

Identification of groundwater chemistry origins in a regional aquifer system (Wielkopolska region, Poland)

Dragon

Górski

2014

Environ Earth Sci

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“…3a and 3b). The most intensive increase is visible in cases of chloride and sulphate (reflected by electrical conductivity); thus, the parameters reflect water anthropogenic contamination (Dragon 2008). Interestingly, some parameters (oxygen consumption, iron and water colour) show decrease of concentrations over time ( Fig.…”

Section: Resultsmentioning

confidence: 91%

“…4b). These groundwater components were identified as the most sensitive indicators of anthropogenic input (Dragon 2008). Their concentrations are incomparably higher than those of the whole data set (compare Fig.…”

Section: Resultsmentioning

confidence: 96%

“…The sampling survey performed in 2000 consists of 61 sampling sites (Dragon 2006;2008). In the 2009 sampling program, water samples were taken from 41 wells from among 61 wells sampled in 2000.…”

Section: Methodsmentioning

confidence: 99%

“…In spite of very small spatial variations in the chemistry of the groundwater, the hydrochemical zones were classified in order to identify the flow pattern of the groundwater within the aquifer (Dragon and Górski 2009). Furthermore, the zones of anthropogenic groundwater contamination were identified despite the occurrence of semi-confined conditions (Dragon 2008). For identifying the temporal changes in groundwater chemistry, the wells of the WBV aquifer were tapped and resampled in 2009.…”

Section: Introductionmentioning

confidence: 99%

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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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Multivariate statistical analysis and environmental isotopes of Amman/Wadi Sir (B2/A7) groundwater, Yarmouk River Basin, Jordan

Obeidat

Awawdeh

Al‐Rub

2012

Hydrological Processes

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Multivariate statistical techniques, cluster and factor analyses were applied on the Amman/Wadi Sir groundwater chemistry, Yarmouk River basin, north Jordan. The main objective was to investigate the main processes affecting the groundwater chemical quality and its evolution. The k-means cluster analysis yields three groups with distinct ionic concentrations. Cluster 1 comprises the vast majority of the sampled wells, and the water that belongs to this cluster can be classified as freshwater. Cluster 2 comprises only 2% of the sampled wells; it has the highest ionic concentration. The water of this cluster can be classified as brackish water. Cluster 3 involves 23% of the sampled wells, and it has total ionic concentration intermediate to that of clusters 1 and 2. Factor analysis yields a three-factor model, which explains 76.77% of the groundwater quality variation. Factor 1 'salinity factor' involves EC, Na + , Cl -, SO 4 -2 , K + and Mg +2 and reflects groundwater salinization because of overpumping. Factor 2 'hardness factor' includes Ca +2 , HCO 3 and the pH value and signifies soil-water/rock interaction. Factor 3 'nitrate factor' involves only NO 3 and points to groundwater contamination because of human activities, mainly untreated wastewater, and crops and animal cultivation in the unconfined portion of the aquifer. Factors 1 and 3 can be described as human-induced factors, whereas factor 2 can be described as geogenic factor. Factors' scores were mapped to deduce the controlling processes on the groundwater chemistry. Stable isotope composition of 18 O and 2 H has revealed that the groundwater is a mixture of two water types. The radioactive isotopes tritium and 14 C were used to evaluate present day recharge to the aquifer and to estimate the groundwater age, respectively. Present day recharge to the groundwater is taking place in the unconfined portion of the aquifer as it is indicated by the measurable tritium content and low groundwater age.

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The Influence of Anthropogenic Contamination on the Groundwater Chemistry of a Semi-confined Aquifer (The Wielkopolska Buried Valley Aquifer, Poland)

Cited by 23 publications

References 14 publications

Identification of groundwater chemistry origins in a regional aquifer system (Wielkopolska region, Poland)

Identification of groundwater chemistry origins in a regional aquifer system (Wielkopolska region, Poland)

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

Multivariate statistical analysis and environmental isotopes of Amman/Wadi Sir (B2/A7) groundwater, Yarmouk River Basin, Jordan

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