scholarly journals Assessing arsenic exposure in households using bottled water or point-of-use treatment systems to mitigate well water contamination

2016 ◽  
Vol 544 ◽  
pp. 701-710 ◽  
Author(s):  
Andrew E. Smith ◽  
Rebecca A. Lincoln ◽  
Chris Paulu ◽  
Thomas L. Simones ◽  
Kathleen L. Caldwell ◽  
...  
Keyword(s):  
Water Contamination ◽  
Arsenic Exposure ◽  
Bottled Water ◽  
Well Water ◽  
Point Of Use

scholarly journals Under-Sink Activated Carbon Water Filters Effectively Remove Lead from Private Well Water for over Six Months

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3584
Author(s):  
Riley Mulhern ◽  
Jacqueline MacDonald Gibson
Keyword(s):  
Activated Carbon ◽  
Blood Lead ◽  
The United States ◽  
Well Water ◽  
Point Of Use ◽  
Metals Removal ◽  
Lead Levels ◽  
Minimal Data ◽  
Water Filters ◽  
Private Wells

Children who rely on private well water in the United States have been shown to be at greater risk of having elevated blood lead levels. Evidence-based solutions are needed to prevent drinking water lead exposure among private well users, but minimal data are available regarding the real-world effectiveness of available interventions like point-of-use water treatment for well water. In this study, under-sink activated carbon block water filters were tested for lead and other heavy metals removal in an eight-month longitudinal study in 17 homes relying on private wells. The device removed 98% of all influent lead for the entirety of the study, with all effluent lead levels less than 1 µg/L. Profile sampling in a subset of homes showed that the faucet fixture is a significant source of lead leaching where well water is corrosive. Flushing alone was not capable of reducing first-draw lead to levels below 1 µg/L, but the under-sink filter was found to increase the safety and effectiveness of faucet flushing. The results of this study can be used by individual well users and policymakers alike to improve decision-making around the use of under-sink point-of-use devices to prevent disproportionate lead exposures among private well users.

Combining wilcoxon tests with censored data: An application to well water contamination

1994 ◽  
Vol 5 (4) ◽  
pp. 463-472
Author(s):  
Leo R. Korn ◽  
Eileen A. Murphy ◽  
Zhiyi Zhang
Keyword(s):  
Censored Data ◽  
Water Contamination ◽  
Well Water

scholarly journals Dynamics of Ions in Soils Irrigated with Saline Reject

2017 ◽  
Vol 9 (11) ◽  
pp. 190
Author(s):  
Andler Milton Paiva de Oliveira ◽  
Cezar Augusto Medeiros Rebouças ◽  
Nildo Da Silva Dias ◽  
Francisco Souto de Sousa Júnior ◽  
Francisco Vanies da Silva Sá ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Diffusion Coefficient ◽  
Soil Profile ◽  
Water Contamination ◽  
Dispersion Coefficient ◽  
Retardation Factor ◽  
Well Water ◽  
Pollution Potential ◽  
Ground Water Contamination ◽  
Lower Mobility

The objective of this work was to evaluate the variation in the electrical conductivity and the mobilization of ions present in reject brine from desalination plant of brackish well water in three types of soil. The mobilization of the contaminant ions in the reject brine was studied in glass percolation columns, which were filled with soil of contrasting textures (eutrophic CAMBISOL, typic dystrophic Red OXISOL, ENTISOL Quartzipsamment). Experiments ware repeated three times each, and the initial and final concentrations of the ion contaminants were analyzed. The pollution potential of this residue was determined by the retardation factor and dispersion-diffusion coefficient of Ca2+ and Mg2+, besides the variation of electrical conductivity along the profile of each soil studied. In the Red Oxisol, Ca2+ and Mg2+ ions move with greater ease resulting in possibility largest of potential of ground water contamination. In Entisol Quartzipsamment presented higher Mg2+ (R) ion advancement speed, that is, higher subsurface contamination power for these ions. The eutrophic Cambisol presented low diffusion-dispersion coefficient in all the evaluated ions and, therefore, lower mobility of the ions in the soil profile, and consequently, a greater possibility of contamination when irrigated with reject brine.

Potentially pathogenic bacteria isolated from different tropical waters in Sri Lanka

2013 ◽  
Vol 13 (6) ◽  
pp. 1463-1469 ◽  
Author(s):  
W. M. G. C. K. Mannapperuma ◽  
C. L. Abayasekara ◽  
G. B. B. Herath ◽  
D. R. I. B. Werellagama
Keyword(s):  
Surface Water ◽  
Sri Lanka ◽  
Water Samples ◽  
Pathogenic Bacteria ◽  
Water Sources ◽  
Bottled Water ◽  
Well Water ◽  
Faecal Coliforms ◽  
Total Coliforms ◽  
Source Waters

This study investigated the bacteriological contamination of different water sources in Sri Lanka. Source waters (n = 74) including bottled water, well water and surface water were assessed for enumerating total coliforms and faecal coliforms using the membrane filtration method. The results showed that 18.5 and 14.8% of bottled water samples were contaminated with total coliforms and faecal coliforms, respectively. All the well water and surface water samples exceeded the WHO permitted levels for total coliforms and faecal coliforms. Bacteriological identification using biochemical tests and api 20E identification tests revealed the presence of potentially pathogenic bacteria in all water sources tested. Bottled water mainly contained three Enterobacter species, while well water samples showed the broadest spectrum of bacteria including eleven coliform species belonging to the genera Klebsiella, Escherichia, Enterobacter, Citrobacter, Kluyvera, Pantoea, Rautella, and 10 non-coliform species in the genera Pseudomonas, Aeromonas, Salmonella and Acinetobacter. Surface waters contained seven coliform species belonging to the genera Klebsiella, Escherichia, Citrobacter, Rautella and Serratia, and eight non-coliform species in the genera Pseudomonas, Aeromonas and Acinetobacter. Detection of higher bacteriological counts and identification of potentially pathogenic bacteria in different source waters suggest a potential health risk of the water sources used in Sri Lanka.

scholarly journals Risk of Erectile Dysfunction Induced by Arsenic Exposure through Well Water Consumption in Taiwan

2008 ◽  
Vol 116 (4) ◽  
pp. 532-536 ◽  
Author(s):  
Fang-I Hsieh ◽  
Ti-Sheng Hwang ◽  
Yi-Chen Hsieh ◽  
Hsiu-Chiung Lo ◽  
Chien-Tien Su ◽  
...  
Keyword(s):  
Erectile Dysfunction ◽  
Water Consumption ◽  
Arsenic Exposure ◽  
Well Water

scholarly journals Private Wells 101: Bacterial Contamination and Shock Chlorination

EDIS ◽  
2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Yilin Zhuang ◽  
Mary Lusk
Keyword(s):  
Drinking Water ◽  
Water Contamination ◽  
Bacterial Contamination ◽  
Water System ◽  
Well Water ◽  
Drinking Water Contamination ◽  
Private Wells ◽  
Soil And Water

Private well users are responsible for the management and protection of their wells. This new 4-page EDIS publication is for Florida homeowners who are interested in learning more about their well-water system and understanding how to properly shock, or disinfect, the well if there is evidence of drinking water contamination. Written by Yilin Zhuang and Mary Lusk, and published by the UF/IFAS Department of Soil and Water Sciences.https://edis.ifas.ufl.edu/ss700

Sign in / Sign up

Export Citation Format

Share Document