The drinking water treatment process as a potential source of affecting the bacterial antibiotic resistance

Bai, Xiaohui; Ma, Xiaolin; Xu, Fei; Li, Jing; Zhang, Hang; Xiao, Xiang

doi:10.1016/j.scitotenv.2015.06.082

Cited by 115 publications

(45 citation statements)

References 29 publications

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“…With the wide use of antibiotics in human and veterinary medicine and the agricultural industry, ARGs have been detected in a variety of environments, including surface river water [1], municipal wastewater treatment plants (MWTPs) [4], drinking water treatment plants (DWTPs) [5], and water supply reservoirs [6]. Notably, growing evidence shows the existence of ARB and ARGs in drinking water systems from source water to finished water [5,[7][8][9][10]. Since finished water from DWTPs is provided to local populations, the prevalence of ARGs in drinking water systems can be a potential threat to public health.…”

Section: Introductionmentioning

confidence: 99%

Distribution and Abundance of Antibiotic Resistance Genes in Sand Settling Reservoirs and Drinking Water Treatment Plants across the Yellow River, China

Tian

Yang

2018

Water

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Understanding how antibiotic resistance genes (ARGs) are distributed in drinking water treatment processes is important due to their potential public health risk. Little is known about the occurrence and distribution of ARGs in typical drinking water treatment processes, such as sand settling reservoirs (SSRs) and drinking water treatment plants (DWTPs), in the Yellow River, especially at the catchment scale. In this study, ARG profiling was investigated from water samples of influent (river water) and effluent (source water) of SSRs and finished water of DWTPs in six cities along the Yellow River catchment using real-time quantitative polymerase chain reaction (qPCR) and 16S rRNA gene sequencing. Seventeen ARGs and two mobile genetic elements (MGEs) were detected, among which aadE, strA, strB, tetA, sulII, intl1, and Tn916 had high detection rates (over 80%). The absolute abundances (gene copies/mL of water) of ARGs were reduced by the SSRs and DWTPs generally, but no reductions were observed for the relative abundances (gene copies/16S rRNA gene) of ARGs. Spatial distributions of ARGs and bacteria were not observed. The distribution of bacterial genera was clustered into four dominant patterns in different water type samples. The bacterial genera Pseudomonas, Massilia, Acinetobacter, Sphingomonas, Methylobacterium, and Brevundimonas dominated the finished water, with Brevundimonas and Methylobacterium being speculated to be potential hosts for two ARGs (strA and strB) through network analysis. The enrichment of these two genera, likely caused by selection of disinfection process, may contribute to the higher relative abundance of ARGs in finished water. This study provides insight and effective assessment of the potential risk of ARGs in drinking water treatment processes at the catchment scale.

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Section: Introductionmentioning

confidence: 99%

Distribution and Abundance of Antibiotic Resistance Genes in Sand Settling Reservoirs and Drinking Water Treatment Plants across the Yellow River, China

Tian

Yang

2018

Water

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“…According to the literature review, the volumes of fresh water and tap water used in DNA extraction procedures varied widely: from 15 L [49], through 10÷15 L depending on the sample contamination and possible clogging of membrane [51], 4 L [57], 2÷1 L [58][59][60], 1.5 L [61] to 500 ml [14] or 450 mL [42], depending on the sample origin. However, drinking water samples obtained by other researchers could have been affected by the biofilm dwelling in the taps.…”

Section: Extraction Of Dna Directly From Tap Water -A Preliminary Resmentioning

confidence: 99%

“…Technologies presently applied in water treatment plants do not provide the sufficient ARGs removing levels [11,16,51,57]. The proposed improvements may be the increase in dosages of chlorine and the intensity of UV irradiation or sequential UV/chlorination [9], but these solutions generate high costs.…”

Section: Considered Solutionsmentioning

confidence: 99%

The occurrence of antibiotic resistance genes in tap water – a review

Siedlecka

2018

E3S Web Conf.

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Abstract. The study presents a review of the occurrence of genetic determinants of antibiotic resistance in tap water. The aim of this study was also to compare the applied methods for antibiotic resistance genes (ARGs) investigations in tap water. As the concentration of ARGs in treated, drinking water is expected to be very low and may cause problems in a standard isolation procedure, the special emphasis is placed on the applied procedures of DNA extraction and their efficiency. The study presents the first attempts to obtain DNA directly from tap water. Further efforts must be put to determine the final amount of obtained DNA and the presence of chosen ARGs among the molecules.

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“…Other metals (e.g., manganese) could become a problem by accumulating over time [11] needing special attention during treatment and transport of drinking water [47]. On the other hand the water treatment process itself may affect water quality, adding disinfection by products [48] or even affecting the bacterial antibiotic resistance [49]. Therefore prevention of eutrophication and diminishing surface water quality should have a preference over additional treatment [50].…”

Section: Effect Of Artificial Recharge With River Water and Of Air Blmentioning

confidence: 99%

The Effect of Artificial Recharge on Hydrochemistry: A Comparison of Two Fluvial Gravel Pit Lakes with Different Post-Excavation Uses in The Netherlands

Mollema

Antonellini

Hubeek³

et al. 2016

Water

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Gravel pit lakes form when gravel deposits are excavated below the water table. We studied two fluvial gravel pit lakes called De Lange Vlieter (DLV Lake) and the Boschmolen Plas (BP Lake), in the Meuse River valley (The Netherlands). Water from the Meuse River is pumped only into the DLV Lake that is used for drinking water production. The mean values, the linear trends and seasonal patterns of time series data (2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014), of temperature, pH, nitrate, phosphate and sulphate were compared using one-way tests of variance and tests of differences. The effects of river water infiltration on DLV Lake are (1) a change in lake water temperature; (2) an increase in nitrate concentration (3) an increase in phosphate concentration and (4) a decrease in sulphate concentration. The effects of the air blowers in DLV Lake are (1) mixing of lake water; (2) decreasing pH in spring and summer (3) water oxygenation. Linear regression analysis shows an initially increasing nitrate concentration in DLV Lake that can be explained by the input of nitrate rich Meuse river water. Instead decreasing nitrate and phosphate concentrations in BP Lake and Meuse River reflect a diminished use of fertilizers. The gravel pit lake water temperature does not reflect climatic changes but the use of DLV Lake for artificial recharge has an impact on the seasonal and long-term trends in hydrochemistry. This poses a challenge to lake managers to find the right balance between reduction of eutrophication and accumulation of nutrients and sulphate.

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The drinking water treatment process as a potential source of affecting the bacterial antibiotic resistance

Cited by 115 publications

References 29 publications

Distribution and Abundance of Antibiotic Resistance Genes in Sand Settling Reservoirs and Drinking Water Treatment Plants across the Yellow River, China

Distribution and Abundance of Antibiotic Resistance Genes in Sand Settling Reservoirs and Drinking Water Treatment Plants across the Yellow River, China

The occurrence of antibiotic resistance genes in tap water – a review

The Effect of Artificial Recharge on Hydrochemistry: A Comparison of Two Fluvial Gravel Pit Lakes with Different Post-Excavation Uses in The Netherlands

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