scholarly journals Appraisal of Heavy Metal Presence and Water Quality having Microbial Load and Associated Human Health Risk: A study on tube-well water in Nalitabari township of Sherpur district, Bangladesh

2021 ◽  
Vol 4 (2) ◽  
pp. 48-64
Author(s):  
Md. Rayhan Ali ◽  
Md. Omar Faruque ◽  
Md. Tarikul Islam ◽  
Md. Tarek Molla ◽  
Md. Shakir Ahammed ◽  
...  
Keyword(s):  
Human Health ◽  
Skin Diseases ◽  
Human Health Risk ◽  
Fecal Coliforms ◽  
Plate Count ◽  
Well Water ◽  
Heterotrophic Plate Count ◽  
Alternative Source ◽  
Physiochemical Parameters ◽  
Tube Well

This article is based on a study aimed to determine physiochemical parameters, fecal coliform, total coliforms, heterotrophic plate count, arsenic, iron and lead of water to evaluate their effects on human health. Analysis was carried out on tube-well water collected from Nalitabari township of Sherpur District in Bangladesh. The dissolved oxygen (DO), total dissolved solids (TDS), salinity and electrical conductivity were in the ranges of 4.30 to 7.30 ppm, 350 to 792 mg/l, 0.2 to 0.5%, and 715 to 1,970 μS/cm. The pH values were slightly lesser or more than permissible value. Due to the vicinity to the latrines, 17 tube-wells’ water was contaminated by fecal coliforms. The highest heterotrophic plate count was 7.5×103 cfu/ml in ward-8 of the town. Eschericia coli and Vibrio cholerae were identified in ratio of 30.56% and 18.06%, respectively, in the tube-well water, resulting into diarrhea among children. About 6.94% of tube-well water was contaminated with arsenic. 3.25% and 4.5% respondents were suffering from skin diseases and headache, respectively. So, an alternative source of drinking water should be arranged for a better public health of present and next generations.

scholarly journals Manganese in potable water of nine districts, Bangladesh: Human health risk

2021 ◽  
Author(s):  
Md. Aminur Rahman ◽  
Md. Abul Hashem ◽  
Md. Sohel Rana ◽  
Md. Rashidul Islam
Keyword(s):  
Drinking Water ◽  
Human Health ◽  
Water Samples ◽  
Potable Water ◽  
Hazard Quotient ◽  
Human Health Risk ◽  
World Health ◽  
Well Water ◽  
Tube Well ◽  
Health Organization

Abstract Safe drinking water is directly linked to good human health. An excessive amount of manganese (Mn) in drinking water supplies causes people show symptoms of neurotoxicity. In this study, the level of Mn in potable water sourced from tube wells located in 9 (nine) districts of Bangladesh was monitored. In total 170 (one hundred and seventy) water samples were collected and Mn was quantified by atomic absorption spectroscopy (AAS). The levels of Mn found in the tube well water samples of Sirajganj, Meherpur, Chuadanga, Jhenaidah, Magura, Faridpur, Jashore, Satkhira, and Khulna were 0.37–1.86, 0.10–4.11, 0.30–0.76, 0.26–0.94, 0.01–0.18, 0.21–1.78, 0.08–1.23, 0.05–0.27 and 0.01–2.11 mg/L, respectively. Results revealed that Mn level was beyond the highest contaminated levels of 0.1 mg/L and 0.4 mg/L, which are recommended by Bangladesh Drinking Standard (BDS) and World Health Organization (WHO), respectively. The maximum Mn contaminated level reached up to 4.11 mg/L (mean: 0.53 mg/L). The Mn level in tube well water exceeded 51.1% and 75.9% set by the recommended value of WHO and BDS, respectively. Furthermore, the calculated hazard quotient (HQ) value for Mn was observed to be greater than unity, indicating both children and adults risked potential non-carcinogenic health issues. The water supply authorities should take steps to provide Mn-free drinking water for communities.

scholarly journals Quality assessment of roof-harvested rainwater in the West Bank, Palestinian Authority

2011 ◽  
Vol 9 (3) ◽  
pp. 525-533 ◽  
Author(s):  
A. K. Daoud ◽  
K. M. Swaileh ◽  
R. M. Hussein ◽  
M. Matani
Keyword(s):  
Drinking Water ◽  
Health Risk ◽  
Human Health ◽  
Heterotrophic Bacteria ◽  
West Bank ◽  
Human Health Risk ◽  
Fecal Coliforms ◽  
The West ◽  
Guideline Values

Rain harvesting is becoming more common in the Palestinian Territories as a result of drinking water scarcity. Although it might pose serious human health risk, this water is being consumed without treatment in many areas of the West Bank. The present study evaluates the physicochemical and microbial quality of harvested rainwater that is used as potable water in the West Bank. Samples from roof-harvested rainwater storage tanks (n = 42) were collected in summer (SS) 2006/winter (WS) 2007. Physicochemical parameters measured were: temperature, pH, electrical conductivity, salinity, total dissolved solids, turbidity, nitrate, copper and lead. With few exceptions, all these parameters were within WHO guideline values. All samples (100%) were found to contain coliforms and to be heavily contaminated with heterotrophic bacteria. About 67% of all samples were contaminated with fecal coliforms. Specific PCR technique confirmed the presence of five pathogenic microorganisms that can be ordered according to their prevalence as: Citrobacter (83%) > Acinetobacter (78%) > Aeromonas (52%) > Pseudomonas and Campylobacter (7%). Prevalence of microorganisms in SS was higher than in WS. Although the physicochemical quality of most harvested rainwater samples was in accordance with WHO guidelines for drinking water, stored rainwater was significantly contaminated with bacteria resulting in significant human health risk from infectious diseases.

Risk Perception and Human Health Risk in Rural Communities Consuming Unregulated Well Water in Saskatchewan, Canada

Risk Analysis ◽  
2019 ◽  
Vol 39 (11) ◽  
pp. 2559-2575
Author(s):  
Lorelei Ford ◽  
Cheryl Waldner ◽  
Javier Sanchez ◽  
Lalita Bharadwaj
Keyword(s):  
Risk Perception ◽  
Rural Communities ◽  
Health Risk ◽  
Human Health ◽  
Human Health Risk ◽  
Well Water

Impact of the surface characteristics of rainwater tank material on biofilm development

2012 ◽  
Vol 66 (6) ◽  
pp. 1225-1230 ◽  
Author(s):  
Mikyeong Kim ◽  
Juliette Ravault ◽  
Mooyoung Han ◽  
Kiyoung Kim
Keyword(s):  
Construction Material ◽  
Surface Characteristics ◽  
Fecal Coliforms ◽  
Plate Count ◽  
New Materials ◽  
Heterotrophic Plate Count ◽  
Rainfall Events ◽  
Rainwater Tank ◽  
Biofilm Development ◽  
The Impact

In order to determine the impact of rainwater construction material on the development of a biofilm, three materials were tested: concrete, clay, and PVC. The biofilm attachment was initially more effective on clay coupons, but, after a period of three days, concrete coupons produced a greater quantity of biofilm than clay and PVC, in that order. The heterotrophic plate count in the rainwater indicated that this quantity tended to first increase following a rainfall, and then decrease. The new materials seemed to attach themselves to the existing biofilm on the wall and/or sediment in the form of small particles. The presence of fecal coliforms in the biofilm coupons was noted after major rainfall events, and this was correlated with the increase in fecal coliforms in the water. This study concluded that the most favorable support for biofilm development is concrete, clay, and PVC, in that order.

Salinity-induced fluorescent dissolved organic matter influence co-contamination, quality and risk to human health of tube well water, southeast coastal Bangladesh

Chemosphere ◽  
2021 ◽  
Vol 275 ◽  
pp. 130053 ◽  
Author(s):  
Mohammad Mahbub Kabir ◽  
Samia Akter ◽  
Farah Tasneem Ahmed ◽  
Mohammad Mohinuzzaman ◽  
Md. Didar-ul-Alam ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Human Health ◽  
Well Water ◽  
Coastal Bangladesh ◽  
Fluorescent Dissolved Organic Matter ◽  
Tube Well

scholarly journals Human health risk assessment of uranium in drinking water sampled from drilled wells located in rural areas of the Lower Silesian region (Poland) / Ocena ryzyka zdrowotnego związanego z obecnością uranu w wodzie przeznaczonej do spożycia pobieranej z wierconych studni zlokalizowanych na obszarach wiejskich Dolnego Śląska (Polska)

2015 ◽  
Vol 41 (2) ◽  
pp. 21-27 ◽  
Author(s):  
Sławomir Garboś ◽  
Dorota Święcicka
Keyword(s):  
Drinking Water ◽  
Health Risk ◽  
Human Health ◽  
Rural Areas ◽  
Inductively Coupled Plasma ◽  
Human Health Risk ◽  
Well Water ◽  
Daily Intakes ◽  
Control Study ◽  
Well Waters

Abstract Uranium concentrations in groundwater taken from private drilled wells have been never determined in Poland, implying a lack of available data to quantify the human exposure to U through drinking water consumption, especially in rural areas influenced by mining activities. The main aim of the study was the assessment of human health risk related to the consumption of well waters containing U, collected from selected rural areas of the Lower Silesian region (Poland). The random daytime (RDT) sampling method was applied to the collection of well waters from three control study areas (CSA): Mniszków (CSA-A), Stara Kamienica/M. Kamienica/Kopaniec (CSA-B) and Kletno (CSA-C). The analyses of RDT samples were performed by validated method based on inductively coupled plasma mass spectrometry (ICP-MS). Uranium concentration ranges in well waters and the estimated geometric means for individual control study areas were: 0.005-1.03 μg/L and 0.052 μg/L (CSA-A), 0.027-10.6 μg/L and 0.40 μg/L (CSA-B), and 0.006-27.1 μg/L and 0.38 μg/L (CSA-C). The average and individual chronic daily intakes (CDI) of U by drinking water pathway (adults/children) were in the ranges of: 0.0017-0.013/0.0052-0.040 μg · kg-1 · day-1 and 0.0002-0.90/0.0005-2.71 μg · kg-1 · day-1. The average %TDI and ranges of individual %TDI (adults/children) were: 0.17%/0.52% and 0.02-3.4%/0.05-10.3% (CSA-A), 1.3%/4.0% and 0.09-35%/0.27-106% (CSA-B), and 1.3%/3.8% and 0.02-90%/0.06-271% (CSA-C). The estimated average CDI values of U through well water are significantly lower than the TDI (1 μg · kg-1 · day-1), while for individual CDI values the contribution to the TDI can reach even 90% (adults) and 271% (children), indicating essential human health risk for children consuming well water from private drilled wells located in CSA-B and CSA-C (5.3% of total number of samples collected).

scholarly journals Microbial Evaluation of Spices in Ethiopia

2018 ◽  
Vol 12 (1) ◽  
pp. 422-429 ◽  
Author(s):  
Tesfaye L. Bedada ◽  
Firehiwot A. Derra ◽  
Samson G. Gebre ◽  
Waktole G. Sima ◽  
Redwan M. Edicho ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Staphylococcus Aureus ◽  
Human Health ◽  
Plate Count ◽  
Heterotrophic Plate Count ◽  
Plate Method ◽  
Total Coliforms ◽  
E Coli ◽  
Thermotolerant Coliforms ◽  
Microbiological Indicators

Introduction: Since spices are taken as ready-to-eat products, they are not subjected to heat treatment. The use of spices contaminated with pathogens can lead to morbidity and mortality. Materials and Methods: The study was conducted on 162 samples of 25 spices collected from retail and production sites in different regions of Ethiopia between January 2010 to December 2017 to determine the concentrations of heterotrophic plate count and Staphylococcus aureus by pour plate method; for coliforms using NMKL Method No. 44; for mould and yeast enumeration using spread method and for Salmonella using ES ISO 6579. The data was analysed using SPSS version 20.0. Results: Moulds, yeasts, total coliforms, heterotrophic plate count, total coliforms, thermotolerant coliforms, E. coli and S. aureus above the acceptable limits were observed in 5 (3%), 7 (4.3%), 2 (1.2%), 20 (12.3%), 10 (6.2%), 9 (5.6%) and 19 (11.7%) samples respectively. Salmonella species was not noticed in any of the samples tested. No bacterial and fungal contaminations were observed in 11 of 25 spices. Conclusions: Few spices samples had 1.2 to 12.3% of the microbiological indicators, spoilages or pathogens exceeded the ICMFS guidelines. The use of these contaminated spices may pose risk to human health.

scholarly journals DRINKING WATER

2016 ◽  
Vol 23 (03) ◽  
pp. 339-342
Author(s):  
Abubakar Imran ◽  
Tariq Manzoor ◽  
Muhammad Ibrahim ◽  
Wasif Munaf
Keyword(s):  
Drinking Water ◽  
Ethical Issues ◽  
Fecal Coliforms ◽  
World Health ◽  
Health Conditions ◽  
Well Water ◽  
Human Populations ◽  
Tube Wells ◽  
Tube Well ◽  
Health Organization

Introduction: World Health Organization, (WHO) estimates that more than 80%of poor health conditions in developing countries, is related to water and sanitation condition.The supply water and sanitary lines often overlap in our water supply system and watercontaminated by fecal contents and become a major cause of GIT infections and outbreaksin human populations. Objective: The Objective of the study was to determine the fecalcontamination level in tube well water across the distributing supply lines. Study Design: Thestudy design was observational. Settings: Fatima Memorial Hospital, College of Medicine andDentistry Shadman Lahore. Period: February 01, 2012 to May 29, 2012. Method: The studydid not engage any ethical issues and conducted in five specific regions of Lahore. A 100 mlof water sample was collected in sterile container, from the tube well and after every 100 meterdistance till 500 meters. The sample size was 250 from 45 tube wells and their distributingsupply lines. It was then observed for fecal coliforms using prescribed scientific methods.Result: The results indicated that bacterial growth at baseline was 42.2%, and at extremity was73.3%. The A Category water obtained at baseline is 60.0% and at the extreme level it is 26.7%.So by increasing distance from source of water the risk of fecal contamination and low qualityof drinking water increases. Conclusion: It is concluded that as the distance increased fromthe main source

Sign in / Sign up

Export Citation Format

Share Document