Pseudomonas aeruginosa in bottled drinking water in Sri Lanka: a potential health hazard

2014 ◽  
Vol 14 (6) ◽  
pp. 1045-1050
Author(s):  
A. T. Herath ◽  
C. L. Abayasekara ◽  
Rohana Chandrajith ◽  
N. K. B. Adikaram
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Drinking Water ◽  
Sri Lanka ◽  
Dna Sequencing ◽  
Membrane Filtration ◽  
Health Hazard ◽  
Opportunistic Pathogen ◽  
Bottled Water ◽  
Potential Health ◽  
Bottled Drinking Water

Pseudomonas aeruginosa, a food- and water-borne opportunistic pathogen, constitutes a health risk mostly to immunocompromised patients, and also affects the taste, odour and turbidity of potable water. In order to detect P. aeruginosa in bottled water in Sri Lanka, 36 bottled water brands were collected randomly from retail and supermarkets island wide. P. aeruginosa was detected by the membrane filtration technique, using cetrimide agar supplemented with nalidixic acid. The isolates were subjected to confirmatory tests, viz: ISO 16266:2006 methods and growth at 4 and 42°C, and API 20NE followed by DNA sequencing. Presumptive isolates of P. aeruginosa were observed on cetrimide agar in 50% of brands. Among these isolates, ISO procedures confirmed 58% as P. aeruginosa. Thirty-nine randomly selected isolates were identified as P. aeruginosa by the API 20NE, three of which were further confirmed by DNA sequencing. The presence of P. aeruginosa in bottled water raises health concerns since P. aeruginosa is an indicator of inferior water quality. Therefore, strict regulations and regular monitoring of bottling plants are recommended in order to supply safe and acceptable bottled drinking water to the Sri Lankan market.

scholarly journals Radon concentration measurement and effective dose assessment in different brands of commercial bottled water produced in China

2020 ◽  
Vol 20 (5) ◽  
pp. 1581-1591 ◽  
Author(s):  
Jinlong Yong ◽  
Guangwen Feng ◽  
Qian Liu ◽  
Chao Tang ◽  
Baoshan Wu ◽  
...  
Keyword(s):  
Drinking Water ◽  
Effective Dose ◽  
Radon Concentration ◽  
Health Hazard ◽  
Age Groups ◽  
Bottled Water ◽  
Dose Assessment ◽  
Potential Health ◽  
The Public ◽  
Radon Concentrations

Abstract Radon and its progeny often exist in daily drinking water, and may pose a potential health threat to the public. In this study, the radon concentrations of 15 different brands of bottled drinking water and their radiological hazards were measured and evaluated. The results indicate that the concentration range of radon in water is 13.3 ± 4.7 to 300.0 ± 21.6 mBq/L, and is lower than the limit level (11.11 Bq/L). The results compared with radon concentrations from other countries or regions show that the radon concentrations in this study are almost within the range of those of all the others. The average annual effective dose for infants, children and adults in the three age-groups is 0.657, 0.535 and 0.665 μSv/y respectively, which is lower than the recommended level of 0.1 mSv/y. The results also show that the bottled water does not pose a major health hazard to the public. Moreover, combined with statistical analysis, it is concluded that the concentration of total dissolved solids (TDS) and Ca2+ in bottled mineral water has a strong correlation with the radon concentration in the water.

Viruses and Water: Problems, Detection, and Control

1993 ◽  
Vol 27 (7-8) ◽  
pp. 127-133 ◽  
Author(s):  
H. Dizer ◽  
J. Dürkop ◽  
A. Grohmann ◽  
H. Kopecka ◽  
J. M. López-Pila
Keyword(s):  
Drinking Water ◽  
Surface Waters ◽  
Membrane Filtration ◽  
Wastewater Treatment Plants ◽  
Health Hazard ◽  
Primary Source ◽  
Detection Methods ◽  
Secondary Effluent ◽  
Naturally Occurring ◽  
Water Problems

Secondary effluent of wastewater treatment plants contains a high number of viruses and other pathogens, which pose a health risk to the population, (especially when receiv ng waters are used for bathing and swimming, or for growing shellfish. In areas with a high density of population, where drinking water supply is dependent on surface waters and contaminated rivers are the primary source of drinking water, failure of the filtration or of the disinfection step, or of any other “barriers” supposed to warrant safe potable water, will increase the risk of health hazard for the consumer. We have compared the efficiency of viral elimination in secondary effluent by flocculation, uv rradiation and membrane filtration taking naturally occurring, or additionally seeded f2 phages, as indicator for viruses. Flocculation decreased the number of phages present in secondary effluent by more than two logs. If combined with uv irradiation, the elimination reached five additional logs. Membrane filtration eliminated essentially all naturally occurring phages. Improvement of the quality of surface waters calls for a refinement of detection methods for viruses. We have found that the polymerase chain reaction (PCR) might be used for detecting viruses in surface waters.

Survey of Bottled Drinking Water Sold in Canada. Part 1. Lead, Cadmium, Arsenic, Aluminum, and Fluoride

1992 ◽  
Vol 75 (6) ◽  
pp. 949-953 ◽  
Author(s):  
Robert W Dabeka ◽  
Henry B S Conacher ◽  
John Salminen ◽  
Gerald R Nixon ◽  
Gunther Riedel ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Tap Water ◽  
Bottled Water ◽  
Mineral Waters ◽  
Mineral Spring ◽  
Bottled Drinking Water ◽  
Drug Regulations ◽  
Tap Water Quality

Abstract Samples of bottled water (n = 172) offered for sale in Canada were analyzed for lead, cadmium, arsenic, aluminum, and fluoride: means and ranges (μg/g) found were, respectively, 0.0026 (<0.0010- 0.074), 0.00018 (<0.0001-0.0004), 0.0030 (<0.001- 0.048), 0.027 (<0.010-0.568), and 0.543 (<0.050- 5.85). Comparison of levels among mineral waters (n = 64), spring waters (n = 77), and miscellaneous waters (n = 31) indicated appreciable differences only in the case of fluoride. For fluoride, the means and medians (μg/g) for mineral, spring, and miscellaneous waters were 1.179 and 0.455, 0.152 and 0.090, and 0.201 and <0.050, respectively. No samples were found in violation of the tolerances in the Canadian Food and Drug Regulations; however, 1 sample (in a lead-soldered can) contained lead and 15 samples contained fluoride at levels above the limits recommended by the Guidelines for Canadian Drinking Water (tap-water) Quality.

scholarly journals Analisa Pemilihan Air Mineral dan Rekomendasi Terbaik dengan Metode SMART (Simple Multy Atribute Rating Technique)

2019 ◽  
Vol 3 (4) ◽  
pp. 387
Author(s):  
Dedi Leman
Keyword(s):  
Drinking Water ◽  
Product Quality ◽  
Significant Influence ◽  
Mineral Water ◽  
Bottled Water ◽  
Purchasing Decisions ◽  
Research Results ◽  
Bottled Drinking Water ◽  
Intense Competition

Everyone needs drinking water which is increasing in line with the increasing population of Indonesia, but while the amount and level of drinking water decreases so people are looking for other options to get healthy drinking water and good levels. major developments in the sale of bottled drinking water, along with the arrival of many bottled drinking water products that are spread throughout the country bring increasingly intense competition among bottled beverage vendors. Various kinds of prices have a good and advanced impact on purchasing decisions. With the simple multy attribute rating technique, the method will find out the best mineral water according to the selected criteria. The purpose of this study is to examine the good levels of products, prices and the introduction of purchasing drinking water into a decision in purchasing bottled water. This research results that various kinds of product quality have a positive and significant influence on people's purchasing decisions in buying bottled water

scholarly journals Tendencies towards bottled drinking water consumption: Challenges ahead of polyethylene terephthalate (PET) waste management

2021 ◽  
Vol 11 (1) ◽  
pp. 60-68
Author(s):  
Hassan Aslani ◽  
Parisa Pashmtab ◽  
Abdolreza Shaghaghi ◽  
Asghar Mohammadpoorasl ◽  
Hassan Taghipour ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Consumption ◽  
Tap Water ◽  
Bottled Water ◽  
Water Usage ◽  
Pet Waste ◽  
Bottled Drinking Water ◽  
Time Period ◽  
Waste Generation Rate ◽  
Tap Water Quality

Background: The main objective of this study was to investigate the logics behind tendencies towards bottled drinking water usage in spite of availability of treated tap water. The amount of waste bottle is also estimated in Iran and managing principles for resolving the issue presented. Methods: A questionnaire was used to survey the logics behind tendencies toward bottled drinking water consumption among 120 participants. In order to estimate the quantities of the PET wastes produced in the country, data about bottled water production rate as well as volume of the imported and exported drinking bottled water were collected from 1962 to 2015 and applied in the calculations. Results: Findings suggested that about 0.026 to 3.86 billion liters (about 1.04 billion literson average) of bottled water was consumed annually between 2000 and 2015. Furthermore, bottled water consumption increased from 0.41 to 48.9 L/capita-year within the same time period. In the meantime, the plastic bottle waste generation rate rose from 12.84 to 1519.38 g/capita-year. There is no efficient and suitable system for managing and recycling waste bottles in the country. The perceived unreliability of tap water quality was the main reason of bottled water consumption among 74% of the respondents. Conclusion: To reduce bottled water consumption and the associated harmful environmental and health consequences, measures such as informing people, validating public water supply quality, preventive rules enactment, and establishing extended producer responsibility (EPR) are highly recommended.

scholarly journals Prevalence, Virulence, Antimicrobial Resistance, and Molecular Characterization of Pseudomonas aeruginosa Isolates From Drinking Water in China

2020 ◽  
Vol 11 ◽  
Author(s):  
Lei Wei ◽  
Qingping Wu ◽  
Jumei Zhang ◽  
Weipeng Guo ◽  
Qihui Gu ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Drinking Water ◽  
Antimicrobial Resistance ◽  
Virulence Genes ◽  
Drinking Water Treatment ◽  
Opportunistic Pathogen ◽  
Polymyxin B ◽  
Detection Rates ◽  
Water Treatment Process ◽  
Comprehensive Data

Pseudomonas aeruginosa is an important opportunistic pathogen and remains a major threat to the microbial safety of drinking water. There is a lack of comprehensive data on P. aeruginosa contamination in drinking water in China. Therefore, this study aimed to determine the prevalence, genetic diversity, virulence genes, and antimicrobial resistance of P. aeruginosa isolated from mineral water and spring water in China. From January 2013 to January 2014, 314 drinking water samples were collected from 23 cities in China. Of the collected samples, 77 (24.5%) were contaminated with P. aeruginosa, and these comprised 34 raw water (30.4%), 39 activated carbon-filtered water (30.6%), and four final water product (3.9%). A total of 132 P. aeruginosa isolates were obtained, and all of them showed the presence of virulence genes, with the detection rates of ExoU, ExoS, phzM, toxA, and lasB genes being 7.6, 86.3, 95.5, 89.4, and 100%, respectively. All isolates were sensitive to the 14 antibiotics (ciprofloxacin, levofloxacin, ofloxacin, norfloxacin, gentamicin, tobramycin, amikacin, polymyxin B, imipenem, meropenem, aztreonam, ceftazidime, cefepime, and piperacillin/tazobactam) tested. The 132 isolates were categorized into 42 sequence types according to multilocus sequence typing, and ST235 accounted for 8.3% (11) of the total isolates. Thus, this study provides comprehensive data on the prevalence and characteristics of P. aeruginosa in drinking water in China and can aid in developing preventive measures against contamination during the drinking water treatment process.

scholarly journals Physical, chemical and microbiological analysis of bottled water in Pokhara, Nepal

2020 ◽  
Vol 10 (2) ◽  
pp. 25-28
Author(s):  
Manisha Maskey ◽  
Laxminarasimha Sharma Annavarapu ◽  
Tista Prasai ◽  
Dharma Raj Bhatta
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Coefficient Of Variation ◽  
Monsoon Season ◽  
Quality Standards ◽  
Bottled Water ◽  
Water Quality Standards ◽  
Bottled Drinking Water ◽  
Physical Chemical

Background: Today possibility of rendering water non-potable by various types of contaminants (physical, chemical and biological) is of considerable importance. It is not only the microbial con­taminants but also the physical and chemical contaminants, playing an important role in compro­mising our health in many ways. The aim of this study was to assess the physical, chemical and the microbiological quality of commercially produced bottled water in Pokhara city. Methods: A study was conducted to assess the quality of bottled drinking water produced in Pokhara city. Total of 21 brands of bottled water was collected, first batch in monsoon season and second batch in pre-monsoon season, from the market. The physical, chemical and microbial as­sessment was carried out as per National Drinking Water Quality Standards, 2062. Coefficient of variation and t-test were applied where applicable. Results: Better water quality was found in Pre-monsoon season than that of monsoon season, in regard to microbial assessment. None of the samples in first batch tested positive for coliform whereas in second batch 38.2% of samples tested positive for coliform. Coefficient of variation for pH and chloride content was, 8.9% and 6.1%, 35.6% and24.19%, in pre-monsoon and monsoon season respectively. Both were found to be statistically significant. While other tested parameters were within normal limits. Conclusions: The quality bottled drinking water available for sale do not meet the standards given by National Drinking Water Quality Standards, particularly the microbial quality.

scholarly journals Quality Assessment of Sachet and Bottled Water in Ogbomoso Metropolis, Nigeria

2019 ◽  
pp. 1-15
Author(s):  
Augustine I. Airaodion ◽  
Edith O. Airaodion ◽  
Etinosa U. Osemwowa ◽  
Emmanuel O. Ogbuagu ◽  
Uloaku Ogbuagu
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Mineral Composition ◽  
Water Samples ◽  
Urban Areas ◽  
Bottled Water ◽  
Bottled Drinking Water ◽  
Physical Chemical ◽  
Quality Water ◽  
The Government

Background: Access to potable water has become a difficult task in many countries of the world including Nigeria. In Nigeria, the government is trying her best to make water supply available to the masses but till now this vision has never been accomplished. If those living in urban areas could not have access to portable water supply by the government, what is the fate of the people living in rural areas? This has led to increased usage of sachet and bottled water as portable drinking water. Aim: The aim of this study was to investigate the quality of sachet and bottled water produced and/or sold in Ogbomoso metropolis, Nigeria. Place and Duration of Study: This research was carried out in Ogbomoso and Ibadan both in Oyo State Nigeria between November 2018 and February, 2019. Methodology: Twenty sachet and five bottled drinking water brands; making a total of 25 brands from different manufacturers were used for this study. They were purchased randomly from local markets, shops and street vendors within Ogbomoso metropolis. They were clearly marked for easy identification, and transported to the Quality Assurance Laboratory of Water Corporation, Eleyele, Ibadan for immediate analysis. The samples were examined physically and information on the packages were recorded. Each product was carefully opened to avoid contamination. The physical, chemical and bacteriological qualities as well as the mineral composition of all samples were analyzed using standard methods and results were compared with the recommended WHO/NIS guidelines for quality water. Results: Physical examination indicated that all the sampled water were registered with NAFDAC but 50% of the sachet water had no manufacturing and expiry dates. The results of physical, chemical and bacteriological qualities as well as the mineral composition of sachet and bottled drinking water analyzed showed that 90% of the values were within the guideline of WHO/NIS for quality water. Conclusion: Though, the average temperature values of both the sachet and bottled drinking water samples were significantly above the WHO/NIS standard, it did not have any effect on their microbiological quality properties. Total coliforms, faecal coliforms and enterococci bacteria       that principally characterize drinking water quality were not present in any of the water       samples. Generally, the results obtained in this study indicated that sachet and bottled drinking water produced and/or sold in Ogbomoso metropolis were of good quality and hygienic for consumption.

scholarly journals BISPHENOL A DETECTION IN PACKAGED DRINKING WATER AND BEVERAGES USING HIGH PERFORMANCE LIQUID CHROMATOGRAPHY

2021 ◽  
Vol 9 (03) ◽  
pp. 111-117
Author(s):  
Neha P. Sangai ◽  
◽  
Himanshu A. Pandya ◽  
Keyword(s):  
Drinking Water ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Bisphenol A ◽  
High Performance ◽  
Bottled Water ◽  
High Concentration ◽  
Bottled Drinking Water ◽  
The Mean ◽  
Mean Concentration

Background: Bisphenol A is characterized as an endocrine disruptor as it interferes with the synthesis of hormones and metabolism resulting in abnormality in the homeostatis of exposed persons. It is used in the production of polycarbonate and epoxy resins which are utilized in the preparation of almost all plastic packaging materials like plastic bottles, cans, food containers, and coating on food containers. Objective: To detect leaching of Bisphenol A in 15 samples of Bottled water and Beverages using High Performance Liquid Chromatography. Methods: Liquid-liquid extraction technique was used for analytical detection of BPA from bottled drinking water and beverages. Results: BPA contamination in Bottled drinking water was calculated through mean concentration for a time period of 30 days as (0.38 ng/ml - 0 day), 8.86 ng/ml (5th day), 17.85 ng/ml (10th day), 30.35 ng/ml (20th day) and 44.48 ng/ml (30th day)). The mean concentration of BPA was observed to be 0.25 to 2.25 ng/ml. Also, the mean concentration of BPA at different temperatures was observed to be 5.96 ng/ml (at 40C), 5.62 ng/ml (at 200C) and 8.80 ng/ml (at 550C). The above results revealed presence of high concentration of BPA in all the samples of bottled drinking water and beverages. Conclusion: The results obtained in the above study depicted considerable amount of BPA leaching from bottled containers into drinking water and beverages. Prolong usage of bottled water and beverages should be avoided to reduce the risk of human exposure to BPA through leaching. Also, it was found that high temperatures resulted in increased BPA leaching.

scholarly journals POTENTIAL HEALTH IMPACT OF DRINKING WATER SOURCES: CASE STUDY FROM SERBIA

2021 ◽  
pp. 011
Author(s):  
Vesna Lazarević ◽  
Miodrag Đorđević ◽  
Nataša Đorđević ◽  
Nikola Igić ◽  
Ana Stojković ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Potassium Permanganate ◽  
Membrane Filtration ◽  
Organic Matter Content ◽  
Matter Content ◽  
Water Supply Systems ◽  
High Concentration ◽  
Potential Health ◽  
Supply Systems

Drinking water quality has a direct impact on the health of the population and is the main indicator of environmental sanitation and hygienic living conditions. The aim of this study was to investigate the quality of drinking water from three water supply systems in Serbia.The retrospective descriptive study was done covering the period between 2011 and 2015. We collected data from control water supply systems in three towns and tested the samples as required by the Regulation on the Hygienic Acceptability of Potable Water. The following indicators of water security were analyzed: ammonia, nitrates, nitrites, consumption of potassium permanganate, organic matter content, pH and electroconductivity. The microbiological quality was determined by analyzing the indicators of fecal contamination, Escherichia coli, Enterococci and Salmonellae, using the membrane filtration method.The most frequent parameters of physical-chemical insecurity of water were a high concentration of ammonia, lower pH levels, and increased consumption of potassium permanganate. The most common detected microbes were aerobic mesophilic bacteria which are not significant from the aspect of human health.These results showed that drinking water could pose a potential risk to local consumers. 

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