Weekly variations of discharge and groundwater quality caused by intermittent water supply in an urbanized karst catchment

Grimmeisen, Felix; Zemann, Moritz; Goeppert, Nadine; Goldscheider, Nico

doi:10.1016/j.jhydrol.2016.03.045

Cited by 29 publications

(12 citation statements)

References 51 publications

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“…1d), where a semiarid Mediterranean climate with short rainy winters and long dry summers is prevailing. The annual rainfall ranges between about 500 and 700 mm (Grimmeisen et al 2016) and often occurs in the form of intense and short precipitation events.…”

Section: Hydrogeological Settingmentioning

confidence: 99%

“…All four springs play an important role in the local water supply while local farmers mainly use smaller springs such as Jadour (Taht and Fouq) and Farkha for agricultural irrigation (Riepl 2013). In 2012, the Hazzir spring was disconnected from the drinking water supply due to frequent contamination problems and weekly fluctuations, with bacterial levels increasing on weekends due to leakages and intermittent water supply (Grimmeisen et al 2016), which generally occur subsequent to rainfall events during the winter season (Margane et al 2010). Perennial surface runoff in the Wadi Shueib originates partly from the Baqqqouria spring and partly from treated wastewater-release from the treatment plant of As-Salt with an accumulated average annual baseflow of about 3-8 million m 3 (Margane et al 2010;Kuntz 2003).…”

Section: Hydrogeological Settingmentioning

confidence: 99%

“…Due to an often-dilapidated water infrastructure, pollutants easily reach the groundwater through fissures and swallow holes and are quickly transported via karst conduits to springs or wells, often along preferential flow paths (Ford and Williams 2007). These water-quality impairments are often observed locally through short-term contamination, usually after rainfall events, but also become visible in the long-term and include a large number and variety of contaminants (Ascott et al 2016;Zemann et al 2014;Grimmeisen et al 2016). However, unwanted water losses in sewer and drinking water supply networks also affect groundwater resources through recharge (Tubau et al 2017), often with higher rates than in natural settings (Lerner 2002).…”

Section: Introductionmentioning

confidence: 99%

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Hydrochemical evaluation of water resources and human impacts on an urban karst system, Jordan

et al. 2020

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Urban karst aquifers are threatened by anthropogenic activities, especially in semiarid developing countries. Recent water-sampling campaigns assessed the extent of groundwater-quality impairment in the Wadi Shueib in Jordan by a comprehensive hydrogeological and hydrochemical characterization of groundwater, wastewater, and imported water with its endmembers Lake Tiberias, Yarmouk River and Mukheiba wellfield. The results of a ternary mixing model with the mass ratios of Cl−/Br− and Ca2+/Mg2+ indicate that Lake Tiberias and Yarmouk River provide most of the imported water at the time of sampling in 2017 and Mukheiba wellfield provided minor amounts. The similarity in seasonal variations of Br− concentrations in the springs and the imported water revealed that imported water has generally a greater impact on groundwater than wastewater. However, the Br− concentrations also showed that the spatial wastewater impact is more visible towards urbanized areas due to increased infiltration of pollutants. The analysis of historical data series demonstrated the long-term urban impact on groundwater by an electrical conductivity increase over several decades, particularly since the mid-1990s, which is related to a doubling of Jordan’s population since that time and the associated urban growth. In this context, increased chloride and sulfate concentrations are noticeable due to the increased impact of more highly mineralized imported water and wastewater and decreasing recharge of low-mineralized rainwater. This study showed the hydrochemical differences in the Wadi Shueib groundwater system and serves as an example for the spatial and long-term response of karst aquifers to anthropogenic, seasonally variable input of imported water and wastewater.

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Section: Hydrogeological Settingmentioning

confidence: 99%

Section: Hydrogeological Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrochemical evaluation of water resources and human impacts on an urban karst system, Jordan

et al. 2020

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“…Both developed and developing countries are experiencing serious issues due to anthropogenic groundwater contamination and recharge through leakage into the water supply network, municipal sewage, and onsite waste disposal [1][2][3][4]. These concerns are more severe in areas in which groundwater is the primary source of fresh water [5,6], as well as in the densely populated areas of developing countries due to improper infrastructure [7][8][9]. The groundwater beneath such areas may contain various organic and inorganic compounds that readily affect the groundwater environment [10,11].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Groundwater Quality Status and Nitrogen Contamination in the Shallow Aquifer System of the Kathmandu Valley, Nepal

Shakya

Nakamura

Kamei

et al. 2019

Water

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: The increasing concentration of nitrogen compounds in the groundwater is of a growing concern in terms of human health and groundwater quality. Although an excess of nitrogen compounds in the groundwater of the Kathmandu Valley has been reported, the seasonal variations of the fate of the nitrogen compounds and their relationships to the subsurface sediments are unknown. In this study, spatially distributed shallow dug well samples were collected during both the dry and wet seasons of 2016, and the nitrogen compound, chloride (Cl−), and iron (Fe2+) concentrations were analyzed. Two shallow dug wells and one deep tube well were monitored monthly for 2 years. Although NH4-N concentrations were similar in the clay-dominated areas during both seasons (1 and 0.9 mg-N/L), they were lower in the gravel-dominated areas during wet season (1.8 > 0.6 mg-N/L). The NO3-N concentration differed depending upon the soil type which increased during the wet season (clay 4.9 < 13.6 mg-N/L and gravel 2.5 < 6.8 mg-N/L). The Fe2+ concentration, however, was low during the wet season (clay 2.7 > 0.4 mg/L and gravel 2.8 > 0.3 mg/L). Long-term analysis showed higher fluctuation of nitrogen compounds in the gravel-bearing areas than in the clay-bearing areas.

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“…The utilization of purging duration on groundwater sample is totally depends on water quality characteristics. There are abundance of studies on groundwater quality to determine physical [17], [18], chemical [17]- [20] and microbial properties [18], [19], [21], [22]. One of the chemical properties that are substantial to determine the suitability for human consumption is heavy metals concentration.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Metakaolin as Low Cost Adsorbent for Manganese Removal in Anoxic Groundwater

Sapingi¹,

Murshed²,

Tajaruddin³

et al. 2019

Civil and Environmental Engineering Reports

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The recent climate condition and pollution problem related to surface water have led to water scarcity in Malaysia. Huge amount of groundwater has been identified as viable source for drinking water. This paper was aimed to investigate groundwater’s quality at specific location and metakaolin’s potential in the groundwater treatment in the removal of manganese. Groundwater purging was determined to be sufficient at 120 minutes where all three parameters (pH, dissolved oxygen and conductivity) were stabilized. The groundwater studied is classified as both anoxic and reductive due the low dissolved oxygen value. It also can be categorized as brackish due to high value of conductivity and total dissolved solid. Manganese content in groundwater was determined as higher than of that permissible limit for raw water and drinking water which makes it unsuitable for them not suitable for consumption and cleaning purpose. Average manganese concentration in samples was 444.0 ppb where the concentrations of manganese ranged from 229.4 ppb to 760.3 ppb. Manganese developed is not that a strong positive correlation against iron concentration, total dissolved solids and conductivity; whereas has a moderate negative correlation against dissolved oxygen. The capability adsorption of manganese by metakaolin was assessed via batch method which indicated optimum dosage and contact time was 14g that removed average 30.2% and contact time optimum at 120 minutes which removed 33.2% manganese from the sample.

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Weekly variations of discharge and groundwater quality caused by intermittent water supply in an urbanized karst catchment

Cited by 29 publications

References 51 publications

Hydrochemical evaluation of water resources and human impacts on an urban karst system, Jordan

Hydrochemical evaluation of water resources and human impacts on an urban karst system, Jordan

Seasonal Groundwater Quality Status and Nitrogen Contamination in the Shallow Aquifer System of the Kathmandu Valley, Nepal

Performance Evaluation of Metakaolin as Low Cost Adsorbent for Manganese Removal in Anoxic Groundwater

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