72,256 results match your criteria drinking water


Characterizing the premise plumbing microbiome in both water and biofilms of a 50-year-old building.

Sci Total Environ 2021 Jul 22;798:149225. Epub 2021 Jul 22.

Advanced Water Management Centre (AWMC), The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia. Electronic address:

The premise plumbing portion of drinking water distribution systems (DWDS) has several characteristics that may favor microbial growth in the form of biofilms. These microbial communities are implicated as infectious sources for the spread of opportunistic waterborne pathogens by supporting their complex ecology and transmission through DWDS outlets to susceptible individuals. However, there is limited understanding of the drinking water biofilms in real premise plumbing networks due to challenges with accessibility. Read More

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Significance of Mg-hardness and fluoride in drinking water on chronic kidney disease of unknown etiology in Monaragala, Sri Lanka.

Environ Res 2021 Jul 30:111779. Epub 2021 Jul 30.

Department of Geology, Faculty of Science, University of Peradeniya, Peradeniya, Sri Lanka. Electronic address:

The epidemic of chronic kidney disease of unknown etiology (CKDu) that contributes significantly to morbidity and mortality rates among dry-zonal farming communities has become a public health priority in Sri Lanka. Though a large number of hypotheses were introduced as causative factors, none of them have been confirmed so far. As drinking water quality is among the most suspected causative factors for the emergence of CKDu, a detailed hydro-geochemical investigation was carried out concurrently with the population screening in the Monaragala district of Sri Lanka where high incidences of CKDu are reported. Read More

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Diarrhea treatment center (DTC) based diarrheal disease surveillance in settlements in the wake of the mass influx of forcibly displaced Myanmar national (FDMN) in Cox's Bazar, Bangladesh, 2018.

PLoS One 2021 2;16(8):e0254473. Epub 2021 Aug 2.

icddr,b, Dhaka, Bangladesh.

Background: In August 2017, after a large influx of forcibly displaced Myanmar nationals (FDMN) in Cox's Bazar, Bangladesh diarrhea treatment centers (DTCs) were deployed. This study aims to report the clinical, epidemiological, and laboratory characteristics of the hospitalized patients.

Methods: The study followed cross-sectional design. Read More

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Avian Orthoavulavirus 1 Vaccination Failure in Minnesota Turkeys.

Avian Dis 2021 Mar;65(1):63-66

Minnesota Poultry Testing Laboratory Veterinary Diagnostic Laboratory, University of Minnesota, Willmar, MN 56201,

Minnesota is the leading state in number of turkeys produced in the United States. Turkey flocks in the field are usually vaccinated several times with live avian orthoavulavirus 1 (AOAV-1) vaccines starting as early as 2 wk of age (WOA). During the years 2018-2019, many turkey flocks were diagnosed with low-virulence AOAV-1 infection around 9 WOA that led to respiratory disease, although they were previously vaccinated. Read More

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Effect of Telmisartan on Arsenic-Induced (Sub-chronic) Perturbations in Redox Homeostasis, Pro-inflammatory Cascade and Aortic Dysfunction in Wistar Rats.

Biol Trace Elem Res 2021 Jul 30. Epub 2021 Jul 30.

Department of Veterinary Pharmacology and Toxicology, Veterinary College, Karnataka Veterinary, Animal and Fisheries Sciences University, Hebbal, Bengaluru, Karnataka, 560 024, India.

An experimental study was conducted in male Wistar rats to explore the antioxidant potential of telmisartan (an AT receptor blocker) to overcome arsenic ('As')-induced perturbations in redox homeostasis pro-inflammatory cytokines, prostaglandin-E levels and aortic dysfunction in Wistar rats. Wistar rats were randomly divided into four groups of six each. Group-I served as untreated control, while group-II received sodium (meta) arsenite (NaAsO) (10 mg/kg b. Read More

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Drinking water quality and antibiotic resistance of E. coli and Salmonella spp. from different sources in Gweru urban, Zimbabwe.

Environ Monit Assess 2021 Aug 2;193(8):546. Epub 2021 Aug 2.

Department of Food Science and Nutrition, Midlands State University, P. Bag 9055, Gweru, Zimbabwe.

The study focused on assessing drinking water quality from different sources in Gweru urban. Seventy six samples were collected from 6 different locations and analysed for physicochemical parameters and microbial quality. Bacteria isolates were identified using matrix-assisted laser desorption ionization-time of flight mass spectrometry and antibiotic susceptibility was determined for 4 isolates that had been identified as Escherichia coli (2) and Salmonella spp. Read More

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Gastric accommodation: Physiology, diagnostic modalities, clinical relevance, and therapies.

Neurogastroenterol Motil 2021 Aug 1:e14213. Epub 2021 Aug 1.

Section of Pediatric Gastroenterology, Hepatology, and Nutrition, Baylor College of Medicine, Houston, Texas, USA.

Background: Gastric accommodation is an essential gastric motor function which occurs following ingestion of a meal. Impaired gastric fundic accommodation (IFA) is associated with dyspeptic symptoms. Gastric accommodation is mediated by the vagal pathway with several important physiologic factors such as duodenal nutrient feedback playing a significant role. Read More

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Highly sensitive detection of Hg employing SPR sensor modified with chitosan/poly (vinyl alcohol)/SnO film.

Anal Bioanal Chem 2021 Aug 2. Epub 2021 Aug 2.

Key Laboratory of Optoelectronic Technology & Systems, Ministry of Education of China, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, People's Republic of China.

Water contamination by mercury ions (Hg) causes irreversible and serious effect on the ambient environment, ecological systems, and human health, necessitating further improvement of Hg monitoring at low concentrations. Here, we proposed a novel surface plasmon resonance (SPR) sensor for Hg detection with desirable advantages of high sensitivity, simple operation, label-free, and low cost, in which the chitosan/poly (vinyl alcohol)/SnO composite film was modified on sensing surface as the active layer for sensitivity enhancement. Benefiting from the relatively high refractive index of SnO nanoparticles, the evanescent field generated at the metal-solution interface can be significantly enhanced, which results in a 5 times improvement of sensitivity. Read More

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Metagenomic Profile of Microbial Communities in a Drinking Water Storage Tank Sediment after Sequential Exposure to Monochloramine, Free Chlorine, and Monochloramine.

ACS ES T Water 2021 ;1(5):1283-1294

Center for Environmental Solutions & Emergency Response, U.S. Environmental Protection Agency, Cincinnati, Ohio 45268, United States.

Sediment accumulation in drinking water storage facilities may lead to water quality degradation, including biological growth and disinfectant decay. The current research evaluated the microbiome present in a sediment after sequential exposure to monochloramine, free chlorine, and monochloramine. Chemical profiles within the sediment based on microelectrodes showed evidence of nitrification, and monochloramine slowly penetrated the sediment but was not measurable at lower depths. Read More

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January 2021

Assessing pollution profiles along Little Akaki River receiving municipal and industrial wastewaters, Central Ethiopia: implications for environmental and public health safety.

Heliyon 2021 Jul 9;7(7):e07526. Epub 2021 Jul 9.

Center for Environmental Science, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia.

Little Akaki River drains residential, industrial, and agricultural irrigation areas of Addis Ababa City Administration and is exposed to point and non-point sources of pollution. The purpose of this study was to identify sources, evaluate the levels of river water pollution, and its implications for environmental and public health. Pollution indices and multivariate statistical analyses were used to determine sources and levels of the river water pollution. Read More

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Safety and efficacy of a feed additive consisting of a flavonoid-rich dried extract of  ×  L. fruit (bitter orange extract) for use in all animal species (FEFANA asbl).

EFSA J 2021 Jul 27;19(7):e06709. Epub 2021 Jul 27.

Following a request from the European Commission, the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of a dried flavonoid-rich extract of  ×  L. fruit (bitter orange extract), when used as a sensory additive for all animal species. The use of the additive in feed was not expected to increase the exposure to furocoumarins of those target species that are already fed citrus by-products to a relevant extent (< 5%). Read More

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Hydromethanolic Crude Extract of the Leaf of Hochst. ex. A. Rich. (Urticaceae) Acquires Appreciable Antiulcer Effect: Validation for Antiulcer Activity.

Evid Based Complement Alternat Med 2021 20;2021:6591070. Epub 2021 Jul 20.

Department of Pharmacy, Teda Health Science College, Gondar, Ethiopia.

Background: has been used for the treatment of peptic ulcer disease in Ethiopian folkloric medicine by drinking its juice after boiling the semicrushed leaf. To our latest understanding, no study was available regarding its antiulcer activity. The present study was done to appraise the ulcer-protective and ulcer healing activity of hydromethanolic crude extract of leaf of in rats. Read More

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Genetic Microbial Source Tracking Support QMRA Modeling for a Riverine Wetland Drinking Water Resource.

Front Microbiol 2021 14;12:668778. Epub 2021 Jul 14.

Research Group Environmental Microbiology and Molecular Diagnostics E166/5/3, Institute of Chemical, Environmental and Bioscience Engineering, Vienna, Austria.

Riverine wetlands are important natural habitats and contain valuable drinking water resources. The transport of human- and animal-associated fecal pathogens into the surface water bodies poses potential risks to water safety. The aim of this study was to develop a new integrative modeling approach supported by microbial source tracking (MST) markers for quantifying the transport pathways of two important reference pathogens, and , from external (allochthonous) and internal (autochthonous) fecal sources in riverine wetlands considering safe drinking water production. Read More

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Face-Computer Interface (FCI): Intent Recognition Based on Facial Electromyography (fEMG) and Online Human-Computer Interface With Audiovisual Feedback.

Front Neurorobot 2021 16;15:692562. Epub 2021 Jul 16.

Rehabilitation Center, Shengjing Hospital of China Medical University, Shenyang, China.

Patients who have lost limb control ability, such as upper limb amputation and high paraplegia, are usually unable to take care of themselves. Establishing a natural, stable, and comfortable human-computer interface (HCI) for controlling rehabilitation assistance robots and other controllable equipments will solve a lot of their troubles. In this study, a complete limbs-free face-computer interface (FCI) framework based on facial electromyography (fEMG) including offline analysis and online control of mechanical equipments was proposed. Read More

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Ameliorative effects of nutritional minerals on lead-induced hematological alterations in male Wistar albino rats.

Drug Chem Toxicol 2021 Aug 1:1-5. Epub 2021 Aug 1.

Department of Biochemistry & Biophysics, National Referral Center for Lead Projects in India (NRCLPI), St. John's Medical College, Bangalore, India.

The deficiency of essential minerals increases lead absorption and thus aggravates the lead-induced toxic effects. This study was aimed at understanding the ameliorative effect of essential minerals on lead-induced alterations in hematological parameters in rats. To achieve this objective, the study was conducted in 320 male Wistar albino rats, grouped into two, with equal numbers. Read More

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Efficient adsorptive removal of short-chain perfluoroalkyl acids using reed straw-derived biochar (RESCA).

Sci Total Environ 2021 Jul 20;798:149191. Epub 2021 Jul 20.

Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, United States. Electronic address:

Drinking water and groundwater treatment of perfluoroalkyl acids (PFAAs) heavily relies on adsorption-based approaches using carbonaceous materials, such as granular activated carbon (GAC). Application of GAC is restricted by its inefficiency to remove short-chain PFAAs that have prevalently emerged as substitutes and/or metabolites of long-chain polyfluoroalkyl and perfluoroalkyl substances (PFAS). Here, we synthesized reed straw-derived biochar (RESCA) exhibiting exceptional removal efficiencies (>92%) toward short-chain PFAAs at environment-relevant concentrations (e. Read More

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Impact of global-scale hydroclimatic patterns on surface water-groundwater interactions in the climatically vulnerable Ganges river delta of the Sundarbans.

Sci Total Environ 2021 Jul 21;798:149198. Epub 2021 Jul 21.

School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, 721 302, India.

The global climate patterns like El Niño Southern Oscillation (ENSO) cycle and Indian Ocean Dipole (IOD) have impacts on surface water quality and groundwater recharge patterns. But the ENSO and IOD impacts on surface water-groundwater (SW-GW) interaction in terms of quality have not been studied. Therefore, the present study was conducted to delineate the impacts of ENSO and IOD on the SW-GW interaction process-induced groundwater quality of coastal aquifers of Sundarbans, by the application of isotopic signature, salinity content of groundwater and seawater in relation to rainfall variability. Read More

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How properties of low molecular weight model competitors impact organic micropollutant adsorption onto activated carbon at realistically asymmetric concentrations.

Water Res 2021 Jul 18;202:117443. Epub 2021 Jul 18.

Department of Water Management, Delft University of Technology, PO Box 5048, 2600 GA, Delft, the Netherland; Chair of Water Quality Control, Technische Universität Berlin, KF4, Str. des 17. Juni 135, Berlin 10623, Germany; Berliner Wasserbetriebe, Motardstr. 35, Berlin 13629, Germany.

Low molecular weight (LMW) dissolved organic matter (DOM) is the predominant competitor for adsorption sites against organic micropollutants (OMPs) in activated carbon adsorption. However, top-down approaches using highly complex mixtures of real water DOM do not allow to concisely examine the impacts of specific LMW DOM molecular properties on competitive adsorption. Therefore, we followed a bottom-up approach using fifteen model compounds (mDOM) to elucidate how important DOM characteristics, including hydrophobicity and unsaturated structures (ring, double/triple bond), impact competitiveness. Read More

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Contribution of extracellular polymeric substances and microbial community on the safety of drinking water quality: By mean of Cu/activated carbon biofiltration.

Chemosphere 2021 Jul 27;286(Pt 2):131686. Epub 2021 Jul 27.

Nanzhou Waterworks of Guangzhou Water Supply Co. Ltd., Guangzhou, 510000, China.

Change in water quality was investigated with laboratory-scale ozone-biological activated carbon filters using copper-modified granular activated carbon (Cu/GAC) and unmodified granular activated carbon (GAC). In the first seven days of the experimental period, Cu/GAC removed organic matter more efficiently owing to its enhanced adsorption capacity. As the running time increased, the amount of disinfection by-products (DBPs), dissolved organic carbon, and extracellular polymeric substances (EPS) increased sharply in the effluent of the Cu/GAC filter (CCW). Read More

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Mobilization and health risk assessment of fertilizer induced uranium in coastal groundwater.

Environ Res 2021 Jul 29:111791. Epub 2021 Jul 29.

Health Physics Division, BARC, Mumbai, India.

Uranium (U) in groundwater is hazardous to human health, especially if it is present in drinking water. The semiarid regions of southern India chiefly depend on groundwater for drinking purposes. In this regard, a comprehensive sampling strategy was adopted to collect groundwater representing different lithologies of the region. Read More

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Bivariate binary analysis on composite index of anthropometric failure of under-five children and household wealth-index.

BMC Pediatr 2021 Jul 31;21(1):332. Epub 2021 Jul 31.

Department of Statistics, Bahir Dar University, Bahir Dar, Ethiopia.

Background: Malnutrition is the most common cause of mortality and morbidity of children in low and middle income countries including Ethiopia and household wealth index shares the highest contribution. Thus, in this study it is aimed to conduct bivariate binary logistic regression analysis by accounting the possible dependency of child composite index anthropometric failure and household wealth index.

Methods: In this study the data from Ethiopian Demographic and Health Survey (EDHS) 2016 involved 9411 under five children was considered. Read More

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Continuous input of organic ultraviolet filters and benzothiazoles threatens the surface water and sediment of two major rivers in the Pearl River Basin.

Sci Total Environ 2021 Jul 27;798:149299. Epub 2021 Jul 27.

Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China.

The extensive usage of organic ultraviolet filters (UV filters) and benzothiazoles (BTs) has caused continuous and widespread pollution in the aquatic environment. This study investigated the occurrence of nine organic UV filters and eight BTs in the surface water and sediment of two major drinking water source rivers in the Pearl River Basin (PRB). The detection frequencies of six organic UV filters and seven BTs were above 50% in surface water, while eight target compounds were as high as 100%. Read More

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Whole-genome characterization and comparative genomics of a novel freshwater cyanobacteria species: Pseudanabaena punensis.

Mol Phylogenet Evol 2021 Jul 28:107272. Epub 2021 Jul 28.

Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, USA. Electronic address:

Cyanobacteria are emerging as a potential source of novel, beneficial bioactive compounds. However, some cyanobacteria species can harm water quality and public health through the production of toxins. Therefore, surveying the occurrence and generating genomic resources of cyanobacteria producing harmful compounds could help develop the control methods necessary to manage their growth and limit the release contaminants into the water bodies. Read More

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Oral administration of silver nanoparticles-adorned starch as a growth promotor in poultry: Immunological and histopathological study.

Int J Biol Macromol 2021 Jul 28. Epub 2021 Jul 28.

Department of Pathology, Faculty of Veterinary Medicine, Alexandria University, 22758 Edfina, Egypt. Electronic address:

Silver nanoparticles (AgNPs) have recently emerged as promising growth promoters and immune-lifting agents in the poultry industry. This study investigated the potential impact of AgNP supplementation in the drinking water (DW) of broiler chickens during the fattening period. AgNPs were produced through chemical reduction using starch as a reducing and stabilizing agent. Read More

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Reducing lead exposure in school water: Evidence from remediation efforts in New York City public schools.

Environ Res 2021 Jul 28:111735. Epub 2021 Jul 28.

Princeton School of Public and International Affairs, Princeton University, 159 Wallace Hall, Princeton, NJ, 08544, USA. Electronic address:

Following the Flint Water Crisis, many states passed legislation requiring schools to measure and remediate lead in school drinking water. In this study, we present new evidence on the level and distribution of lead in school drinking water by examining the case of New York City, which tested water from every public school fixture in the 2016-17 school year, remediated fixtures that showed elevated levels of lead above 15 ppb, and retested a sample of fixtures in 2018-19. Prior to remediation, 8 % of fixtures showed elevated levels of lead; after remediation, 5 % of fixtures did. Read More

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Telfairia occidentalis mitigates dextran sodium sulfate-induced ulcerative colitis in rats via suppression of oxidative stress, lipid peroxidation, and inflammation.

J Food Biochem 2021 Jul 31:e13873. Epub 2021 Jul 31.

Department of Biochemistry, University of Ilorin, Ilorin, Nigeria.

Ulcerative colitis (UC), a subcategory of inflammatory bowel diseases, affects more than 2 million people globally. This study sought to investigate the curative ability of aqueous leaf extract of Telfairia occidentalis (ATO) on dextran sodium sulfate (DSS)-mediated colitis in rats. UC was induced by 5% of DSS in drinking water, and the curative ability of ATO was assessed at 200 mg/kg by oral administration for 10 days. Read More

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Exogenous Intake of Fluorides in Caries Prevention: Benefits and Risks.

Acta Medica (Hradec Kralove) 2021 ;64(2):71-76

Department of Dentistry, Faculty of Medicine, Charles University and University Hospital, Pilsen, Czech Republic.

Caries incidence and prevalence have decreased significantly over the last few decades due to widespread use of fluoride. However, an increase in the prevalence of dental fluorosis has been reported in both fluoridated and non-fluoridated communities. Care must be taken to ensure that a balance between the optimal fluoride preventive effect at the individual and community level and minimal risk of dental fluorosis is maintained. Read More

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January 2021

LaSnO/g-CN nanocomposites: Rapid and green sonochemical fabrication and photo-degradation performance for removal of dye contaminations.

Ultrason Sonochem 2021 Jul 24;77:105678. Epub 2021 Jul 24.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box.87317-51167, Iran. Electronic address:

The deficiency of drinking water sources has become a serious crisis for the future of the world that the photocatalytic process is one of the most favorable methods for removal of artificial dyes and poisonous organic impurities. In the present study, rapid ultrasonic treatment was performed to obtain LaSnO/Graphitic carbon nitrides (LSO/CN) nanocomposites with advanced photo-catalytic performance. Broccoli extract was utilized as a natural surfactant with active surface groups to control nucleation and growth of formed crystals with the creation of spatial barriers around the cations, and finally prevent nano-product agglomeration. Read More

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Accumulation and passive sampling of bisphenol analogues using triolein-embedded cellulose acetate membrane in waters.

Sci Total Environ 2021 Jul 10;798:148985. Epub 2021 Jul 10.

Chemistry College, Hanshan Normal University, Chaozhou 521041, China.

Bisphenol analogues (BPs) are emerging contaminants that have been widely detected in water environments. The presence of substituted hydrophilic and hydrophobic groups in the molecule may lead to unclear performance in passive sampling. This study tested the accumulation capacity and passive sampling of fifteen BPs in a triolein-embedded cellulose acetate membrane (TECAM) passive sampler. Read More

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