Influence of treatment processes and disinfectants on bacterial community compositions and opportunistic pathogens in a full-scale recycled water distribution system

Krishna, K. S.; Sathasivan, Arumugam; Listowski, Andrzej

doi:10.1016/j.jclepro.2020.123034

Cited by 12 publications

(2 citation statements)

References 58 publications

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“…Past studies have shown that many factors, ranging from source waters (Assche et al, 2019;Stanish et al, 2016) to treatment practices (Bautista-de los Santos et al, 2016;Dai et al, 2020;Pinto et al, 2012), influence the bacterial, archaeal, and eukaryotic inhabitants of drinking water. For instance, the use of residual disinfectants (e.g., free chlorine, chloramine) has been connected to the selection of opportunistic pathogens (Feazel et al, 2009;Kotlarz et al, 2019;Liu et al, 2019;Vaerewijck et al, 2005), the prevalence of antimicrobial resistance genes (Jia et al, 2019(Jia et al, , 2015Shi et al, 2012), and shaping microbial communities (Dai et al, 2020;Hull et al, 2019;Krishna et al, 2020;Wang et al, 2014). At most, these studies have quantified the fraction of viral sequences in a cellular metagenome (Brumfield et al, 2020;Gomez-Alvarez et al, 2012;Stamps et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

A Snapshot of the Global Drinking Water Virome: Diversity and Metabolic Potential Vary with Residual Disinfectant Use

Hegarty

Dai

Raskin

et al. 2021

Preprint

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Viruses are important drivers of microbial community ecology and evolution, influencing microbial mortality, metabolism, and horizontal gene transfer. However, the effects of viruses remain largely unknown in many environments, including in drinking water systems. Drinking water metagenomic studies have offered a whole community perspective of bacterial impacts on water quality, but have not yet considered the influences of viruses. In this study, we address this gap by mining viral DNA sequences from publicly available drinking water metagenomes from distribution systems in six countries around the world. These datasets provide a snapshot of the taxonomic diversity and metabolic potential of the global drinking water virome, and provide an opportunity to investigate the effects of geography, climate, and drinking water treatment practices on viral diversity. Both environmental conditions and differences in sample processing were found to influence the viral composition. Using free chlorine as the residual disinfectant was associated with clear differences in viral taxonomic diversity and metabolic potential, with significantly fewer viral populations and less even viral community structures than observed in distribution systems without residual disinfectant. Additionally, significantly more viral-encoded genes involved in mitigating oxidative stress were observed in systems that use free chlorine, while significantly more viral genes involved in nitrogen metabolism were observed in systems that do not. Through this study, we have demonstrated that viral communities are diverse across drinking water systems and vary with the use of residual disinfectant. Our findings offer directions for future research to develop a more robust understanding of how virus-bacteria interactions in drinking water distribution systems affect water quality.

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Section: Introductionmentioning

confidence: 99%

A Snapshot of the Global Drinking Water Virome: Diversity and Metabolic Potential Vary with Residual Disinfectant Use

Hegarty

Dai

Raskin

et al. 2021

Preprint

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“…Because of its great ability to perform biogeochemical activities in high-nutrient environments, the microbial community. Pseudomonadota, commonly known as coliforms, is well-adapted to high-nutrient environments where it may proliferate quickly (Krishna et al, 2020;Senevirathna et al 2022). Similar research has been performed by (Alotaibi et al 2022).…”

Section: Resultsmentioning

confidence: 99%

Seasonal Fluctuation of Water Quality and Ecogenomic Phylogeny of Novel Potentional Microbial Pollution Indicators of Veshaw River-Western Himalaya

Rather

Ara

Padder

et al. 2022

Preprint

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Almost a billion people, especially in developing countries, need safe water. Several studies in India show that most drinking water sources have high coliform counts. Standard quality control is needed. This study was conducted in rural parts of South Kashmir in the Western Himalaya from February to January, 2020–2022. Water samples were taken from the river from upstream to downstream using standard water sampling techniques. The purpose of this study was to investigate the detection and molecular identification of coliforms in drinking water and the chemical water quality associated with coliform-contaminated drinking water, which summarises river water pollution. The results showed significant variation in water quality measures, indicating increased pollution levels downstream. In all seasons, the highest coliform count was recorded at Sangam (downstream) of the river. In the summer season at Sangam it was recorded (72.2600 cfu 106/l) and no coliform count was found at Kongwaton (upper stream) during the winter season near the source of the Veshaw river. In all seasons, the highest values of water quality parameters (pH 6.847, EC 71.620 dS/m, BOD 1.120 mg/l, and COD 24.637 mg/l) were recorded at Sangam (downstream) of the river during the summer season. In the winter season at Kongwaton, the lowest values of water quality parameters were pH 8.947, EC 253.680 dS/m, BOD 4.963 mg/l, and COD 51.440 mg/l. The existence of coliforms in water indicates current faecal contamination and determines the presence of disease-causing pathogens. The goal of this work is to examine the level of total coliform contamination, coliform species identification, and chemical water quality properties of drinking water and its associated factors, which implies the pollution level in the river. Total DNA was collected and sequenced for 16S rDNA and metagenomics. Universal primers were used to amplify the bacterial 16S rRNA. Using BLAST, the amplified 16S rRNA gene sequence was matched to the NCBI database. A metagenomic study found 27 species that had different relative abundances. These species include E. coli, Escherichia fergusonii, Escherichia albertii, Klebsiella grimontii, and Shigella dysenteriae. This study is thought to be the first to discriminate against E. fergusonii, Escherichia albertii, Klebsiella grimontii, and Shigella dysenteriae from E. coli and to report on E. fergusonii and E. albertii, Klebsiella grimontii, and Shigella dysenteriae in the river Veshaw water sources in Kulgam, Western Himalaya.

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Effect of different doses of trichloroisocyanuric acid on aquaculture pond water

Zhang

Huang

et al. 2023

Aquaculture

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Influence of treatment processes and disinfectants on bacterial community compositions and opportunistic pathogens in a full-scale recycled water distribution system

Cited by 12 publications

References 58 publications

A Snapshot of the Global Drinking Water Virome: Diversity and Metabolic Potential Vary with Residual Disinfectant Use

A Snapshot of the Global Drinking Water Virome: Diversity and Metabolic Potential Vary with Residual Disinfectant Use

Seasonal Fluctuation of Water Quality and Ecogenomic Phylogeny of Novel Potentional Microbial Pollution Indicators of Veshaw River-Western Himalaya

Effect of different doses of trichloroisocyanuric acid on aquaculture pond water

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