scholarly journals Predicting geogenic Arsenic in Drinking Water Wells in Glacial Aquifers, North‐Central USA: Accounting for Depth‐Dependent Features

2018 ◽  
Vol 54 (12) ◽  
Author(s):  
M. L. Erickson ◽  
S. M. Elliott ◽  
C. A. Christenson ◽  
A. L. Krall
Keyword(s):  
Drinking Water ◽  
North Central ◽  
Water Wells ◽  
Central Usa ◽  
Geogenic Arsenic

scholarly journals Assessing the potential risks of burial practices on groundwater quality in rural north-central Nigeria

2011 ◽  
Vol 9 (3) ◽  
pp. 609-616 ◽  
Author(s):  
Joseph T. Zume
Keyword(s):  
Drinking Water ◽  
Pilot Study ◽  
Groundwater Quality ◽  
Groundwater Contamination ◽  
Rural Settlements ◽  
North Central ◽  
Burial Practices ◽  
Water Wells ◽  
Environmentally Safe ◽  
Potential Risks

Several cultures of north-central Nigeria do not use community cemeteries. Instead, human remains are buried in and around family compounds, often in shallow and sometimes unmarked graves. At several locations, graves and drinking water wells end up too close to be presumed environmentally safe. This paper reports findings of a pilot study that explored the potential for groundwater contamination from gravesites in some rural settlements of north-central Nigeria. Preliminary results suggest that the long-standing burial practices among some cultures of rural north-central Nigeria may potentially compromise groundwater quality, which is, by far, their most important source of drinking water.

An expert system for real-time well field management

2012 ◽  
Vol 12 (5) ◽  
pp. 699-706 ◽  
Author(s):  
B. S. Marti ◽  
G. Bauser ◽  
F. Stauffer ◽  
U. Kuhlmann ◽  
H.-P. Kaiser ◽  
...  
Keyword(s):  
Drinking Water ◽  
Expert System ◽  
Knowledge Base ◽  
Real Time ◽  
Urban Areas ◽  
Industrial Sites ◽  
Water Wells ◽  
Well Field ◽  
Field Management ◽  
Historical Management

Well field management in urban areas faces challenges such as pollution from old waste deposits and former industrial sites, pollution from chemical accidents along transport lines or in industry, or diffuse pollution from leaking sewers. One possibility to protect the drinking water of a well field is the maintenance of a hydraulic barrier between the potentially polluted and the clean water. An example is the Hardhof well field in Zurich, Switzerland. This paper presents the methodology for a simple and fast expert system (ES), applies it to the Hardhof well field, and compares its performance to the historical management method of the Hardhof well field. Although the ES is quite simplistic it considerably improves the water quality in the drinking water wells. The ES knowledge base is crucial for successful management application. Therefore, a periodic update of the knowledge base is suggested for the real-time application of the ES.

PREDICTING GROUNDWATER QUALITY IN DRINKING WATER WELLS IN THE GLACIAL AQUIFER SYSTEM, NORTHERN USA

2018 ◽  
Author(s):  
Melinda L. Erickson ◽  
◽  
Craig J. Brown ◽  
Paul E. Stackelberg ◽  
Bernard T. Nolan
Keyword(s):  
Drinking Water ◽  
Groundwater Quality ◽  
Aquifer System ◽  
Water Wells

ARSENIC CONCENTRATION VARIABILITY IN NEWLY CONSTRUCTED DRINKING WATER WELLS IN MINNESOTA, USA

2018 ◽  
Author(s):  
Emily Berquist ◽  
◽  
Helen Fitzgerald Malenda ◽  
Melinda L. Erickson
Keyword(s):  
Drinking Water ◽  
Arsenic Concentration ◽  
Water Wells

scholarly journals Occurrence of carcinogenic illudane glycosides in drinking water wells

2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Natasa Skrbic ◽  
Vaidotas Kisielius ◽  
Ann-Katrin Pedersen ◽  
Sarah C. B. Christensen ◽  
Mathilde J. Hedegaard ◽  
...  
Keyword(s):  
Drinking Water ◽  
Health Concern ◽  
Liquid Chromatography Mass Spectrometry ◽  
Deep Groundwater ◽  
Hydrolysis Products ◽  
First Finding ◽  
Water Wells ◽  
Shallow Wells ◽  
Great Health ◽  
Groundwater Wells

Abstract Background Ptaquiloside (PTA), caudatoside (CAU) and ptesculentoside (PTE) are carcinogenic illudane glycosides found in bracken ferns (Pteridium spp.) world-wide. The environmentally mobile PTA entails both acute and chronic toxicity. A comparable risk might be associated with the structurally similar CAU and PTE. It is of great health concern if these compounds are present in drinking water, however, it is currently unknown if these compounds can detected in wells in bracken-dominated regions. This study investigates the presence of PTA, CAU, PTE, and their corresponding hydrolysis products pterosins B (PtB), A (PtA) and G (PtG) in water wells in Denmark, Sweden and Spain. Water samples from a total of 77 deep groundwater wells (40–100 m) and shallow water wells (8–40 m) were collected and preserved in the field, pre-concentrated in the laboratory and analysed by liquid chromatography–mass spectrometry (LC–MS). Results Deep groundwater wells contained neither illudane glycosides nor their pterosins. However, seven private shallow wells contained at least one of the illudane glycosides and/or pterosins at concentrations up to 0.27 µg L−1 (PTA), 0.75 µg L−1 (CAU), 0.05 µg L−1 (PtB), 0.03 µg L−1 (PtA) and 0.28 µg L−1 (PtG). This is the first finding of illudane glycosides and pterosins in drinking water wells. Conclusions Detected concentrations of illudane glycosides in some of investigated wells exceeded the suggested maximum tolerable concentrations of PTA, although they were used for drinking water purpose. Contaminated wells were shallow with neutral pH and lower electric conductivity compared to deep groundwater wells with no illudane glycosides nor pterosins.

Exploration of E. coli contamination drivers in private drinking water wells: An application of machine learning to a large, multivariable, geo-spatio-temporal dataset

2021 ◽  
Vol 197 ◽  
pp. 117089
Author(s):  
Katie White ◽  
Sarah Dickson-Anderson ◽  
Anna Majury ◽  
Kevin McDermott ◽  
Paul Hynds ◽  
...  
Keyword(s):  
Machine Learning ◽  
Drinking Water ◽  
E Coli ◽  
Water Wells ◽  
Spatio Temporal

scholarly journals Locating and eliminating feral swine from a large area of fragmented mixed forest and agriculture habitats in north-central USA

2018 ◽  
Vol 26 (2) ◽  
pp. 1654-1660 ◽  
Author(s):  
Richard M. Engeman ◽  
Bradley E. Wilson ◽  
Scott F. Beckerman ◽  
Justin W. Fischer ◽  
Doug Dufford ◽  
...  
Keyword(s):  
Mixed Forest ◽  
Large Area ◽  
Feral Swine ◽  
North Central ◽  
Central Usa
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