scholarly journals Arsenic in Water Resources of the Southern Pampa Plains, Argentina

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
Juan D. Paoloni ◽  
Mario E. Sequeira ◽  
Martín E. Espósito ◽  
Carmen E. Fiorentino ◽  
María del C. Blanco
Keyword(s):  
Public Health ◽  
Drinking Water ◽  
Who Guidelines ◽  
Complementary Information ◽  
Guideline Value ◽  
Dissolved Ions ◽  
Contaminated Drinking Water ◽  
Quality Water ◽  
Safety Of Drinking Water ◽  
Complex Distribution

Confronted with the need for accessible sources of good quality water and in view of the fact that the threat to public health posed by arsenic occurs mainly through the ingestion of contaminated drinking water, the presence and distribution of arsenic was evaluated in the southern Pampa Plains of Bahía Blanca district in Argentina. The findings show variable concentrations of arsenic in a complex distribution pattern. Complementary information is provided on the behavior of the groundwater resource and its salinity in terms of dissolved ions. Groundwater is the most severely affected, 97% of the samples exceeding the guideline value for arsenic in drinking water as recommended by the WHO (Guidelines for Drinking Water Quality, 2004). and showing maximum concentrations of up to 0.30 mg/L. Informing those responsible for preventive medicine and alerting the community at large will facilitate measures to mitigate exposure and ensure the safety of drinking water.

A fatal waterborne disease epidemic in Walkerton, Ontario: comparison with other waterborne outbreaks in the developed world

2003 ◽  
Vol 47 (3) ◽  
pp. 7-14 ◽  
Author(s):  
S.E. Hrudey ◽  
P. Payment ◽  
P.M. Huck ◽  
R.W. Gillham ◽  
E.J. Hrudey
Keyword(s):  
Drinking Water ◽  
Water Security ◽  
Reference Source ◽  
Water Safety ◽  
Drinking Water Safety ◽  
Public Inquiry ◽  
Contaminated Drinking Water ◽  
The Government ◽  
Safety Of Drinking Water ◽  
Developed World

An estimated 2,300 people became seriously ill and seven died from exposure to microbially contaminated drinking water in the town of Walkerton, Ontario, Canada in May 2000. The severity of this drinking water disaster resulted in the Government of Ontario calling a public inquiry by Mr. Justice Dennis O’Connor to address the cause of the outbreak, the role (if any) of government policies in contributing to this outbreak and, ultimately, the implications of this experience on the safety of drinking water across the Province of Ontario. The circumstances surrounding the Walkerton tragedy are an important reference source for those concerned with providing safe drinking water. Although some circumstances are obviously specific to this epidemic, others are uncomfortably reminiscent of waterborne outbreaks that have occurred elsewhere. These recurring themes suggested the need for attention to broad issues of drinking water security and they present the challenge for how drinking water safety can be managed to prevent such tragedies in the future.

scholarly journals Microbiological Analysis of Drinking Water of Kathmandu Valley

1970 ◽  
Vol 5 (5) ◽  
pp. 112-114 ◽  
Author(s):  
Tista Prasai ◽  
Binod Lekhak ◽  
Dev Raj Joshi ◽  
Madhav Prasad Baral
Keyword(s):  
Public Health ◽  
Drinking Water ◽  
Water Samples ◽  
Enteric Bacteria ◽  
Coliform Bacteria ◽  
Kathmandu Valley ◽  
Microbiological Analysis ◽  
Public Health Importance ◽  
Guideline Value ◽  
Drinking Water Samples

Drinking water quality assessment in Kathmandu valley has always been crucial with reference to public health importance. A study was conducted to evaluate the quality of drinking water of the valley. A total of 132 drinking water samples were randomly collected from 49 tube wells, 57 wells, 17 taps and 9 stone spouts in different places of Kathmandu valley. The samples were analyzed for microbiological parameters. Total plate and coliform count revealed that 82.6% and 92.4% of drinking water samples found to cross the WHO guideline value for drinking water. During the study, 238 isolates of enteric bacteria were identified, of which 26.4% were Escherichia coli, 25.6% were Enterobacter spp, 23% were Citrobacter spp, 6.3% were Pseudomonas aeruginosa, 5.4% were Klebsiella spp, 4.0% were Shigella spp, 3.0% were Salmonella typhi, 3.0% were Proteus vulgaris, 3.0% were Serratia spp and 1.0% were Vibrio cholerae . Key words: Drinking water; Public health; Coliform; Bacteria. DOI: 10.3126/sw.v5i5.2667 Scientific World, Vol. 5, No. 5, July 2007 112-114

scholarly journals Preliminary Study of Lead-Contaminated Drinking Water in Public Parks—An Assessment of Equity and Exposure Risks in Two Texas Communities

2021 ◽  
Vol 18 (12) ◽  
pp. 6443
Author(s):  
Leanne Fawkes ◽  
Garett Sansom
Keyword(s):  
Public Health ◽  
United States ◽  
Drinking Water ◽  
The United States ◽  
Median Income ◽  
Safe Drinking Water ◽  
Public Parks ◽  
Health Crisis ◽  
Contaminated Drinking Water ◽  
Lead Levels

Safe drinking water is celebrated as a public health achievement and is a top priority for the Environmental Protection Agency. Yet today, lead (Pb) contaminated drinking water has the potential to be a public health crisis in the United States. Despite efforts to provide safe drinking water, update water infrastructure, and ensure strict drinking water regulations, there are incidents of unsafe lead levels and reports of associated adverse health effects. While there has been increased attention paid to the quality of drinking water within individuals’ homes, little research has examined the presence and concentration of lead in water from drinking fountain sources located in public parks. In this study, we sampled drinking water from every accessible public park in the Bryan/College Station (BCS), TX metropolitan area (N = 56). With a lower detection level of 2.0 μg/L, we discovered a mean lead concentration of 1.3 μg/L across all sites and a maximum of 8.0 μg/L. Furthermore, neighborhoods below the median income for BCS were twice as likely to have detectable lead levels in their water and had 1.5 times the mean concentration. This study underscores the need for action and supports previous studies that have identified a disparate burden to lead exposure among low socioeconomic populations within the United States. By examining the water quality in drinking fountains in publicly accessible parks, the results of our study provide public health professionals with important information about where infrastructure should be improved and the potential harms of lead in drinking fountain water.

Microbial health-based targets for drinking water: current state and Australian case study

2017 ◽  
Vol 38 (4) ◽  
pp. 196
Author(s):  
Christopher EL Owens ◽  
Paul M Byleveld ◽  
Nicholas J Osborne
Keyword(s):  
Public Health ◽  
Drinking Water ◽  
Water Current ◽  
Water Safety ◽  
Current State ◽  
Disability Adjusted Life ◽  
Life Years ◽  
Australian Case ◽  
Safety Of Drinking Water

Through the avoidance of a substantial health burden globally, access to safe drinking water is an important foundation of public health1. An emerging development in this regard is the use of public health metrics, such as disability-adjusted life years, to inform water safety planning2. This paper examines the hypothesis that confidence in the protection of public health, on the part of water suppliers, health regulators, and ultimately consumers is strengthened through the implementation of a health outcome target for the microbial safety of drinking water. A case study demonstrating the implementation of the target is presented.

scholarly journals Characteristics on distribution of chemical composition in groundwater along the Mekong and Bassac (Hậu) river, Vietnam

2019 ◽  
Vol 41 (3) ◽  
Author(s):  
Hikaru Sat Hikaru Sato ◽  
Naoaki Shibasaki ◽  
Huynh Mai Ly ◽  
Nguyen Van Lap ◽  
Ta Thi Kim Oanh
Keyword(s):  
Trace Elements ◽  
Drinking Water ◽  
Chemical Composition ◽  
Arsenic Concentration ◽  
Arsenic Contamination ◽  
World Health ◽  
Mekong River ◽  
Distribution Analysis ◽  
Guideline Value ◽  
Dissolved Ions

Along the Mekong River (MR), arsenic contamination in the groundwater has been recognized since the 2000s. Due to arsenic contamination in shallow aquifers, the drinking water has been prevented from being contaminated with arsenic by installing wells, 200 m to 400 m deep. However, it has been known that groundwater was contaminated by not only arsenic but also other trace elements. The need to reveal characteristics on the distribution of chemical composition by horizontally and vertically is increasing for purposes of appropriate development and management of groundwater. This study summarized the results of surveys for arsenic since 2008 and surveys for dissolved ions and trace elements since 2015, and described characteristics on distribution for chemical composition at the regional areas along the MR and Bassac (Hậu) River (BR). Groundwater samples were collected from existing wells in 8 provinces and 1 city. The authors used Piper and Stiff diagram that reflect the chemical composition of groundwater to respond to varying horizontal and vertical distributions. The Principal Component Analysis (PCA) was also carried out to reveal the correspondences of dissolved ions and trace elements. Variety concentrations and distributions of ions and trace elements show the obvious distinction between upper (<200 m deep) and lower (>200 m deep) aquifers broadly divided by geologic age. A wide variety of ion compositions and trace elements was found in the upper aquifer, and concentration of some trace elements in groundwater was high and exceed the World Health Organization (WHO) drinking water guideline value. On the other hand, groundwater in the lower aquifer is simple and rarely contaminated by trace elements. However, the arsenic concentration ranging from 0.01–0.065 mg/L slightly exceeding the WHO guideline value was found at the lower aquifer in the downstream areas of the Mekong River Delta. These results on the distribution analysis provide the insight that deep groundwater is not necessarily safe by over-pumping from deep aquifer and drilling new wells in the downstream areas.

A Regional Comparative Study on Arsenic Contaminated Drinking Water in Bangladesh

2010 ◽  
Vol 40 (3) ◽  
pp. 763-777
Author(s):  
Sho SHIBATA ◽  
Yoshimi HAGIHARA ◽  
Kiyoko HAGIHARA ◽  
Akira SAKAI
Keyword(s):  
Drinking Water ◽  
Comparative Study ◽  
Contaminated Drinking Water

The effect of distribution system biofilm bacteria on copper concentrations in drinking water

2002 ◽  
Vol 2 (1) ◽  
pp. 319-324
Author(s):  
M.M. Critchley ◽  
N.J. Cromar ◽  
N. McClure ◽  
H.J. Fallowfield
Keyword(s):  
Public Health ◽  
Drinking Water ◽  
Distribution System ◽  
Xanthomonas Maltophilia ◽  
Biofilm Bacteria ◽  
Rhodococcus Sp

This study investigated the potential for distribution system biofilm bacteria to elevate copper concentrations in drinking water. Biofilms were sampled from household copper reticulation pipes and grown on R2A agar. Laboratory coupon experiments were used to determine the effect of single isolate biofilms on aqueous copper concentrations. The majority of biofilm bacteria did not affect copper concentrations in comparison to sterile controls. However, several bacteria including Acidovorax delafieldii, Cytophaga johnsonae and Micrococcus kristinae were shown to significantly elevate copper concentrations in drinking water. In contrast, the bacteria Rhodococcus sp. and Xanthomonas maltophilia were shown to significantly decrease copper levels in comparison to controls. The significance of biofilm bacteria to increase copper concentrations in drinking water has implications for public health by increasing concentrations to levels toxic to humans.

THE VALUE OF ORGANOLEPTIC INDICATORS OF DRINKING WATER THE ROSTOV REGION, AS FACTORS OF THE EPIDEMIC SAFETY OF POPULATION HEALTH

2019 ◽  
pp. 24-34
Author(s):  
Timur Khetsuriani ◽  
Elena Chaplygina ◽  
Tatyana Zhukova ◽  
Elgudzha Khetsuriani
Keyword(s):  
Public Health ◽  
Drinking Water ◽  
Green Algae ◽  
Experimental Studies ◽  
Environmental Safety ◽  
Blue Green Algae ◽  
Rostov Region ◽  
Organoleptic Characteristics ◽  
Aesthetic Appearance ◽  
Mass Development

The article presents an overview of the mass development of cyanobacteria (blue-green algae) in the don river of the Rostov region, which leads to the phenomenon, received in the literature the name of harmful “flowering” of water. The harmfulness of the mass development of cyanobacteria is changes in organoleptic characteristics of drinking water, which lead to the production of a large number of dangerous to human health and animal toxins, to reduce water quality, violation of the aesthetic appearance of the reservoir, the loss of useful human properties of the aquatic ecosystem and are factors of epidemic safety of public health. Experimental studies of the properties of cyanobacteria and toxins produced by blue-green algae are pre-sented. The first studies were carried out at the pilot plant on the technology of purification of flowering don water to ensure environmental safety of drinking water and public health.

MOFs for the treatment of arsenic, fluoride and iron contaminated drinking water: A review

Chemosphere ◽  
2020 ◽  
Vol 251 ◽  
pp. 126388 ◽  
Author(s):  
Dibyajyoti Haldar ◽  
Prangan Duarah ◽  
Mihir Kumar Purkait
Keyword(s):  
Drinking Water ◽  
Contaminated Drinking Water
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