Fresh groundwater resources and their use in emergencies

Zektser, I. S.; Karimova, O. A.; Chetverikova, A. V.

doi:10.1134/s0097807815040156

Cited by 15 publications

(11 citation statements)

References 2 publications

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“…Groundwater is a vital source of drinking water worldwide12. Natural processes influence water quality in groundwater aquifers through the removal of nutrients, pollutants, and microorganisms as well as the addition of minerals34.…”

mentioning

confidence: 99%

Online flow cytometry reveals microbial dynamics influenced by concurrent natural and operational events in groundwater used for drinking water treatment

Besmer

Epting

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et al. 2016

Sci Rep

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Detailed measurements of physical, chemical and biological dynamics in groundwater are key to understanding the important processes in place and their influence on water quality – particularly when used for drinking water. Measuring temporal bacterial dynamics at high frequency is challenging due to the limitations in automation of sampling and detection of the conventional, cultivation-based microbial methods. In this study, fully automated online flow cytometry was applied in a groundwater system for the first time in order to monitor microbial dynamics in a groundwater extraction well. Measurements of bacterial concentrations every 15 minutes during 14 days revealed both aperiodic and periodic dynamics that could not be detected previously, resulting in total cell concentration (TCC) fluctuations between 120 and 280 cells μL−1. The aperiodic dynamic was linked to river water contamination following precipitation events, while the (diurnal) periodic dynamic was attributed to changes in hydrological conditions as a consequence of intermittent groundwater extraction. Based on the high number of measurements, the two patterns could be disentangled and quantified separately. This study i) increases the understanding of system performance, ii) helps to optimize monitoring strategies, and iii) opens the possibility for more sophisticated (quantitative) microbial risk assessment of drinking water treatment systems.

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mentioning

confidence: 99%

Online flow cytometry reveals microbial dynamics influenced by concurrent natural and operational events in groundwater used for drinking water treatment

Besmer

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et al. 2016

Sci Rep

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“…To pinpoint such countries among them, the groundwater monitoring network in Bulgaria includes 508 monitoring points: 106 springs, 340 deep and shallow wells, and 62 pumping stations. The analyzes of groundwater targeted to investigate water pH value, temperature, electrical conductivity, mineralization (HCO3, NO3, NO2, NH4, PO4, Ca, Mg, Na, K, SO4, Cl, Mn, and Fe), water total hardness, and dissolved oxygen content in water from chemicals [17]. In Denmark, drinking water is used almost exclusively from groundwater.…”

Section: Global Groundwater Usementioning

confidence: 99%

“…Changes in the amount of groundwater for drinking purposes are made in about 100 wells, and the monitoring of changes in quality is carried out in 73 monitoring sites. Groundwater mineralization (NO2, NO3, NH4, Ca, Na, Mg, K, HCO3, Cl, SO4, Fe, and Mn), organic carbon, total P, and aggressive carbon dioxide are determined from groundwater samples taken on the basis of established European programs [17].…”

Section: Global Groundwater Usementioning

confidence: 99%

Quantity and quality of groundwater resources distribution along Sirdarya province, Uzbekistan

et al. 2021

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In the current context of climate change, water resources are an important source of the economy of Uzbekistan. The article assesses the climatic conditions of Sirdarya province for 2006-2018, groundwater resources for 2010-2018, their efficient use, the chemical composition of groundwater (chlorine and sulfate from anions, Cu, Be, Mo, As, Pb, Se from harmful heavy metals and Sr). Analysis of the time and space distribution of the amount of heavy metals in the groundwater of the province showed that their amount did not exceed the allowable limit. Changes in the amount of groundwater used for drinking, irrigation, industrial and technical purposes in the province were identified and evaluated, as well as scientific and practical recommendations for sustainable use and protection of groundwater resources.

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“…The need to protect drinking water from microbiological risks has been recognized for many years and strict regulations regarding the monitoring and maintenance of public drinking water production systems are in place ( 39 ). Groundwater is a major source of drinking water, constituting between 70–100 percent of the drinking water mix, especially in some European countries ( 46 ). To extract drinking water, wells are drilled vertically into the aquifer and reach between 30 to 100 m in depth.…”

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confidence: 99%

Impact of Hydraulic Well Restoration on Native Bacterial Communities in Drinking Water Wells

Karwautz

Lueders

2014

Microb. Environ.

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The microbial monitoring of drinking water production systems is essential to assure water quality and minimize possible risks. However, the comparative impact of microbes from the surrounding aquifer and of those established within drinking water wells on water parameters remains poorly understood. High pressure jetting is a routine method to impede well clogging by fine sediments and also biofilms. In the present study, bacterial communities were investigated in a drinking water production system before, during, and after hydraulic purging. Variations were observed in bacterial communities between different wells of the same production system before maintenance, despite them having practically identical water chemistries. This may have reflected the distinct usage practices of the different wells, and also local aquifer heterogeneity. Hydraulic jetting of one well preferentially purged a subset of the dominating taxa, including lineages related to Diaphorobacter, Nitrospira, Sphingobium, Ralstonia, Alkanindiges, Janthinobacterium, and Pseudomonas spp, suggesting their tendency for growth in well-associated biofilms. Lineages of potential drinking water concern (i.e. Legionellaceae, Pseudomonadaceae, and Acinetobacter spp.) reacted distinctly to hydraulic jetting. Bacterial diversity was markedly reduced in drinking water 2 weeks after the cleaning procedure. The results of the present study provide a better understanding of drinking water wells as a microbial habitat, as well as their role in the microbiology of drinking water systems.

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Fresh groundwater resources and their use in emergencies

Cited by 15 publications

References 2 publications

Online flow cytometry reveals microbial dynamics influenced by concurrent natural and operational events in groundwater used for drinking water treatment

Online flow cytometry reveals microbial dynamics influenced by concurrent natural and operational events in groundwater used for drinking water treatment

Quantity and quality of groundwater resources distribution along Sirdarya province, Uzbekistan

Impact of Hydraulic Well Restoration on Native Bacterial Communities in Drinking Water Wells

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