Biodiversity of organisms inhabiting the water supply network of Wroclaw. Detection of pathogenic organisms constituting a threat for drinking water recipients

Wolf-Baca, Mirela; Piekarska, Katarzyna

doi:10.1016/j.scitotenv.2020.136732

Cited by 17 publications

(15 citation statements)

References 36 publications

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“…It is worth emphasizing that fluctuations in relative abundances of ARB and occurrence of individual ARGs detected in this study can originate from accidental detachment of biofilm present on pipe walls, and genetic exchanges between the biofilm and planktonic bacteria [18,41,62,75,88,89]. Nevertheless, this study demonstrates the prevalence of ARB and ARGs, as well as changes in bacterial community structure in bulk tap water within DWDS in Wrocław, Poland, during the summer and winter season.…”

Section: Discussionmentioning

confidence: 57%

Spatiotemporal Changes of Antibiotic Resistance and Bacterial Communities in Drinking Water Distribution System in Wrocław, Poland

Siedlecka

Wolf-Baca

Piekarska

2020

Water

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Antibiotic resistance of bacteria is an emerging problem in drinking water treatment. This paper presents the comparison of antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) prevalence during the summer and winter season in a full-scale drinking water distribution system (DWDS) supplied by two water treatment plants (WTPs). The effect of distance from WTP and physical–chemical water parameters on its microbial properties was also tested. Bacterial consortia dwelling in bulk tap water were additionally compared by means of denaturating gradient gel electrophoresis (DGGE). The results showed that among ARB, bacteria resistant to ceftazidime (CAZ) were the most abundant, followed by bacteria resistant to amoxicillin (AML), ciprofloxacin (CIP), and tetracycline (TE). Numerous ARGs were detected in tested tap water samples. Only CAZ resistant bacteria were more prevalent in the season of increased antibiotic consumption, and only AML resistant bacteria relative abundances increase was statistically significant with the distance from a WTP. The investigated tap water meets all legal requirements. It is therefore safe to drink according to the law. Nevertheless, because antibiotic resistance could pose a threat to consumer health, it should be further monitored in DWDSs.

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Section: Discussionmentioning

confidence: 57%

Spatiotemporal Changes of Antibiotic Resistance and Bacterial Communities in Drinking Water Distribution System in Wrocław, Poland

Siedlecka

Wolf-Baca

Piekarska

2020

Water

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“…However, it is unknown whether free chlorine residual is significant in reducing diversity across all DWDS or whether source and treatment processes may also play a significant role. 16S rRNA amplicon sequencing is a powerful tool to aid identify risk, as it can identify potential pathogenic microbes in distribution 21,[29][30][31][32] . However, as mentioned above, it is unable to distinguish between alive or dead cells.…”

Section: Drinking Water Distribution Systems (Dwds)mentioning

confidence: 99%

Microbiomes in drinking water treatment and distribution: a meta-analysis from source to tap

Thom

Smith

Moore

et al. 2021

Preprint

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A meta-analysis of existing available Illumina 16S rRNA datasets from drinking water source, treatment and DWDS were collated to compare changes in abundance and diversity throughout. Samples from bulk water and biofilm were used to assess principles governing microbial community assembly and the value of amplicon sequencing to water utilities. Individual phyla relationships were explored to identify competitive or synergistic factors governing DWDS microbiomes. The relative importance of stochasticity in the assembly of the DWDS microbiome was considered to identify the significance of source and treatment in determining communities in DWDS. Treatment of water significantly reduces overall species abundance and richness, with chlorination of water providing the most impact to individual taxa relationships. The assembly of microbial communities in the bulk water of the source, primary treatment process, and DWDS is governed by more stochastic processes, as is the DWDS biofilm. DWDS biofilm is significantly different to bulk water in terms of local contribution to beta diversity and in types of taxa present. Water immediately post chlorination has a more deterministic microbial assembly, highlighting the significance of this process in changing the microbiome although elevated levels of stochasticity in DWDS samples suggest that this may not be the case at customer taps. 16S rRNA sequencing is becoming more routine and may have several uses for water utilities including detection and risk assessment of emerging pathogens like Legionella, Bacteroides and Mycobacterium; assessing the risk of nitrification of DWDS; improved indicators of process performance and monitoring for significant changes in the microbial community to detect contamination. Combining this with other quantitative methods like flow cytometry will allow a greater depth of understanding of the DWDS microbiome.

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“…Some authors suggest that this increase of bacterial diversity is due to the lack of chlorine (Roeselers et al, 2015), and propose that a higher diversity of certain beneficial microorganisms can protect against the proliferation of pathogens, what is known as the "protective biofilm" concept or the "probiotic approach" (Bertelli et al, 2018;Hong Wang et al, 2013). Actinobacteria and Alphaproteobacteria are widely reported in drinking water-related ecosystems such as in shower systems (Moat et al, 2016) and distribution systems (Douterelo, Husband, et al, 2016;Makris et al, 2014;Wolf-Baca & Piekarska, 2020;Yang et al, 2016;Zhou et al, 2017). Actinobacteria class was highly abundant in in this study and species belonging to this class have been found in DWDS and associated with organoleptic problems (Zacheus et al, 2001;Zaitlin & Watson, 2006).…”

Section: Microbiological Characteristics Of the Water Samples Containing Materials Removed From Distribution Systemmentioning

confidence: 99%

The microbial ecology of a Mediterranean chlorinated drinking water distribution systems in the city of Valencia (Spain)

Olmo

Husband

Briones³

et al. 2021

Science of The Total Environment

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Biodiversity of organisms inhabiting the water supply network of Wroclaw. Detection of pathogenic organisms constituting a threat for drinking water recipients

Cited by 17 publications

References 36 publications

Spatiotemporal Changes of Antibiotic Resistance and Bacterial Communities in Drinking Water Distribution System in Wrocław, Poland

Spatiotemporal Changes of Antibiotic Resistance and Bacterial Communities in Drinking Water Distribution System in Wrocław, Poland

Microbiomes in drinking water treatment and distribution: a meta-analysis from source to tap

The microbial ecology of a Mediterranean chlorinated drinking water distribution systems in the city of Valencia (Spain)

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