Biostability of Tap Water—A Qualitative Analysis of Health Risk in the Example of Groundwater Treatment (Semi-Technical Scale)

Domoń, Andżelika; Papciak, Dorota; Tchórzewska-Cieślak, B.; Pietrucha-Urbanik, Katarzyna

doi:10.3390/w10121764

Cited by 7 publications

(6 citation statements)

References 48 publications

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“…Thus, biostable water does not contain microorganisms and does not support their development in the storage tank. The instability of water, resulting in the development of biofilm on the internal surfaces of the storage tank and installation pipes, low organoleptic properties of water and secondary contamination with pathogenic bacteria [42].…”

Section: Discussionmentioning

confidence: 99%

Investigation of Microbiological Quality Changes of Roof-Harvested Rainwater Stored in the Tanks

et al. 2021

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Rainwater has been found to be a valuable source of drinking water in Europe, especially in such crisis situations as those caused by contamination of water uptake into water supply systems, large-scale floods or terrorist attacks (e.g., biological weapons). The microbiological quality of water plays a significant role, which is directly related to the potential health risks associated with harvested rainwater (including rainwater stored in the tanks). Microbial contamination is commonly found in rainwater. However, in the literature, detailed results of qualitative and quantitative microbiological assessments are sparse and remain unexplored. Therefore, the aim of this study was to investigate and analyze changes in the microbiological quality of roof-harvested rainwater stored in the tanks, depending on the collection conditions (type of roof surface), storage duration and season. Authors elucidate that conditions such as storage duration, the season in which rainwater is collected, the roof-like surface types and morphology of the catchment area highly affect rainwater quality. This study showed that rainwater harvested from a galvanized steel sheet roof had the best microbial quality, regarding the lowest number of bacteria, while rainwater from a flat roof covered with epoxy resin was the worst. Further, it was detected that rainwater collected in autumn and spring obtained the best microbiological quality. Moreover, a decrease in the number of bacteria was observed in correlation to storage duration. The water became sanitary safe after six weeks of storage at 12 °C. Its use for purposes requiring drinking water quality before six weeks of storage required disinfection.

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Section: Discussionmentioning

confidence: 99%

Investigation of Microbiological Quality Changes of Roof-Harvested Rainwater Stored in the Tanks

et al. 2021

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“…Biological stability of water is conditioned by both the content of organic and non-organic substances. For instance, nitrogen, phosphorus, and organic substrates may create conditions for the growth of heterotrophic organisms, including pathogenic microorganisms in the DWDS [37][38][39]. It has also been shown that trace metals such as iron and copper can affect biofilm development in DWDS [40][41][42].…”

Section: Impact Of Biofilms On Water Quality and Biostabilitymentioning

confidence: 99%

Linking Microbial Community Composition in Treated Wastewater with Water Quality in Distribution Systems and Subsequent Health Effects

Ibekwe

Murinda

2019

Microorganisms

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The increases in per capita water consumption, coupled in part with global climate change have resulted in increased demands on available freshwater resources. Therefore, the availability of safe, pathogen-free drinking water is vital to public health. This need has resulted in global initiatives to develop sustainable urban water infrastructure for the treatment of wastewater for different purposes such as reuse water for irrigation, and advanced waste water purification systems for domestic water supply. In developed countries, most of the water goes through primary, secondary, and tertiary treatments combined with disinfectant, microfiltration (MF), reverse osmosis (RO), etc. to produce potable water. During this process the total bacterial load of the water at different stages of the treatment will decrease significantly from the source water. Microbial diversity and load may decrease by several orders of magnitude after microfiltration and reverse osmosis treatment and falling to almost non-detectable levels in some of the most managed wastewater treatment facilities. However, one thing in common with the different end users is that the water goes through massive distribution systems, and the pipes in the distribution lines may be contaminated with diverse microbes that inhabit these systems. In the main distribution lines, microbes survive within biofilms which may contain opportunistic pathogens. This review highlights the role of microbial community composition in the final effluent treated wastewater, biofilms formation in the distribution systems as the treated water goes through, and the subsequent health effects from potential pathogens associated with poorly treated water. We conclude by pointing out some basic steps that may be taken to reduce the accumulation of biofilms in the water distribution systems.

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“…The biological stability of water is conditioned by the content of inorganic nutrients, i.e., nitrogen and phosphorus, which are necessary for the development of all forms of microorganisms, and the content of organic food substrates, creating conditions for the growth of heterotrophs and pathogenic microorganisms [42,43].…”

Section: Parameters Characterizing the Biological And Chemical Stabilmentioning

confidence: 99%

An Approach to Estimating Water Quality Changes in Water Distribution Systems Using Fault Tree Analysis

2019

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Given that a consequence of a lack of stability of the water in a distribution system is increased susceptibility to secondary contamination and, hence, a threat to consumer health, in the work detailed here we assessed the risk of such a system experiencing quality changes relating to the biological and chemical stability of water intended for drinking. Utilizing real operational data from a water treatment station, the presented analysis of the stability was performed based on the fault tree method. If they are to protect their critical-status water supply infrastructure, water supply companies should redouble their efforts to distribute stable water free of potentially corrosive properties. To that end, suggestions are made on the safeguarding of water distribution systems, with a view to ensuring the safety of operation and the long-term durability of pipes.

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Biostability of Tap Water—A Qualitative Analysis of Health Risk in the Example of Groundwater Treatment (Semi-Technical Scale)

Cited by 7 publications

References 48 publications

Investigation of Microbiological Quality Changes of Roof-Harvested Rainwater Stored in the Tanks

Investigation of Microbiological Quality Changes of Roof-Harvested Rainwater Stored in the Tanks

Linking Microbial Community Composition in Treated Wastewater with Water Quality in Distribution Systems and Subsequent Health Effects

An Approach to Estimating Water Quality Changes in Water Distribution Systems Using Fault Tree Analysis

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