Impact of land-use on groundwater quality: GIS-based study from an alluvial aquifer in the western Ganges basin

Khan, Arshi; Khan, Haris Hasan; Umar, Rashid

doi:10.1007/s13201-017-0612-7

Cited by 35 publications

(14 citation statements)

References 17 publications

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“…These results are consistent with the results of other studies carried out in a village environment which showed strong pollution of the groundwater resources of the settlements [59][60][61][62].…”

Section: Water Quality Changes After the Construction Of The Sewerage Networksupporting

confidence: 92%

Assessment of Shallow Groundwater Purification Processes after the Construction of a Municipal Sewerage Network

Mester

Szabó

Balla

2021

Water

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In the present study, the impact of the construction of the sewerage network (2014) on groundwater quality was studied on the example of a middle-sized settlement in the Great Hungarian Plain and changes in water quality were assessed using GIS and multivariate statistical analysis. As a result of the pollution that has been going on for decades, the groundwater supply of the municipality has become heavily polluted. In the period before sewerage (2011–2013), clear spatial differences were shown in the degree of contamination in the area of the settlement: the degree of contamination increased in the direction of local groundwater flow. Based on our results, the construction of the sewerage network resulted in marked changes in the quality of groundwater wells. Our studies showed a clear decrease in the concentrations of inorganic pollutants (NH4+, NO2−, NO3−, PO43−). In the fifth year of the post-sewerage period (2019), the clear spatial difference between wells was eliminated. We have observed a strong descent (1.5 to 2 m) in groundwater levels in the post-sewerage period, the reason for that is clearly due to that wastewater outflow was eliminated. On this basis, it can be declared that the purification processes in the area have started, but at the same time, our results show that pollutants entering environment undergo a number of transformations and remain in the system for a long time.

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Section: Water Quality Changes After the Construction Of The Sewerage Networksupporting

confidence: 92%

Assessment of Shallow Groundwater Purification Processes after the Construction of a Municipal Sewerage Network

Mester

Szabó

Balla

2021

Water

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“…Usage of different tools and techniques (e.g., numerical modelling, geographical information systems (GIS)) by both scientific communities and decision makers for groundwater quality assessment and management has rapidly increased over the past few decades [27][28][29][30]. A GIS is one of the proven vital tools in studies of groundwater for different purposes (spatial distribution of contaminants, estimating the effect of land-use/land-cover (LULC) changes on water quality, overlay analysis for estimating groundwater potential, etc.)…”

Section: Introductionmentioning

confidence: 99%

Hydrogeochemical Assessment of Groundwater Quality of Mokopane Area, Limpopo, South Africa Using Statistical Approach

Molekoa

Avtar

Kumar

et al. 2019

Water

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Despite being a finite resource, both the quality and quantity of groundwater are under tremendous pressure due to rapid global changes, viz. population growth, land-use/land-cover changes (LULC), and climate change. The 6th Sustainable Development Goal (SDG) aims to “Ensure availability and sustainable management of water and sanitation for all”. One of the most significant dimensions of the SDG agenda is the emphasis on data and governance. However, the lack of good governance coupled with good observed data cannot ensure the achievement of SDG6. Therefore, this study strives to evaluate water quality status and hydrochemical processes governing it in the data-scarce Mokopane area of South Africa. Groundwater is the main source of fresh water supply for domestic usage, intensive agriculture, and mining activities in Mokopane. In this study, hydrogeochemical analysis of groundwater samples was employed to calculate the water quality index (WQI) and evaluate factors governing water quality evolution in the study area. Statistical and spatial analysis techniques were carried out to divide sampling sites into clusters and delineate principal factors responsible for determining water quality of the sampled groundwater. Results suggest that most of the physico-chemical parameters are within permissible limits for drinking water set by the World Health Organization (WHO), except for high fluoride in some samples. Na-HCO3 is the most abundant water type followed by Mg-HCO3, which indicates dominance of Na+, Mg2+, and HCO3±. Rock-water interaction is the prime factor responsible for fluoride enrichment in water. The alkaline nature of groundwater favors the release of exchangeable F− from minerals like muscovite. The WQI suggests that 80% of water samples fall into the good and excellent categories. Poor management of untreated domestic sewage and agricultural runoff is a main factor for the bad/very bad categories of water samples. As the area lacks any credible scientific/government work to report water quality and its management aspects, the findings of this study will definitely help both scientific communities and policy makers to do what is needed for sustainable water resource management in a timely manner.

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“…GIS has been widely applied to groundwater contamination studies to determine potential zones of vulnerability to surficial contamination (Stark et al 1999;Davis et al 2002;Capri et al 2009; Sener and Davraz 2013; Jasrotia and Kumar 2014; Edet 2014; Tokatli 2014; Barroso et al 2015;Bozdag 2015), or to create interactive karst databases (see Gao and Zhou (2008) for a review of GIS applications to karst). Regarding the land use impact on groundwater quality, Khan et al (2011Khan et al ( , 2017 discuss two case studies of GIS application to calculate groundwater quality index and to prepare a map of groundwater sustainability in terms of water quality.…”

Section: Methodsmentioning

confidence: 99%

Land use changes and groundwater quality in Florida

Denizman

2018

Appl Water Sci

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Land use changes around 26 karstic cave-spring systems in Florida were evaluated using geographic information system. Located in the unconfined or semiconfined zones of the Floridan aquifer, some of the cave-spring systems are directly connected to the surficial land use processes by sinking streams, whereas others receiving diffuse recharge are still vulnerable to contamination due to a thin sandy cover overlying the aquifer. Comparison of nitrate-producing land use practices between 2004 and 2013-2014 shows increasing risks of groundwater contamination in the Floridan aquifer. Proliferation of septic systems and wastewater treatment sites due to growing residential areas, increased use of fertilizers for farming and landscaping stand out as major causes of nitrate overload in the both surface and groundwater.

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Impact of land-use on groundwater quality: GIS-based study from an alluvial aquifer in the western Ganges basin

Cited by 35 publications

References 17 publications

Assessment of Shallow Groundwater Purification Processes after the Construction of a Municipal Sewerage Network

Assessment of Shallow Groundwater Purification Processes after the Construction of a Municipal Sewerage Network

Hydrogeochemical Assessment of Groundwater Quality of Mokopane Area, Limpopo, South Africa Using Statistical Approach

Land use changes and groundwater quality in Florida

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