scholarly journals Groundwater Quality Changes in a Karst Aquifer of Northeastern Wisconsin, USA: Reduction of Brown Water Incidence and Bacterial Contamination Resulting from Implementation of Regional Task Force Recommendations

Resources ◽  
2015 ◽  
Vol 4 (3) ◽  
pp. 655-672 ◽  
Author(s):  
Kevin Erb ◽  
Eric Ronk ◽  
Vikram Koundinya ◽  
John Luczaj
Keyword(s):  
Groundwater Quality ◽  
Bacterial Contamination ◽  
Task Force ◽  
Karst Aquifer ◽  
Quality Changes

scholarly journals Evaluation of Seasonal Groundwater Quality Changes Associated with Groundwater Pumping and Level Fluctuations in an Agricultural Area, Korea

Water ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 51
Author(s):  
Kyoochul Ha ◽  
Eunhee Lee ◽  
Hyowon An ◽  
Sunghyun Kim ◽  
Changhui Park ◽  
...  
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Groundwater Level ◽  
Irrigation Water ◽  
Agricultural Area ◽  
Water Type ◽  
Quality Changes ◽  
Groundwater Pumping ◽  
Rice Paddies ◽  
Groundwater Levels

This study was conducted to evaluate seasonal groundwater quality due to groundwater pumping and hydrochemical characteristics with groundwater level fluctuations in an agricultural area in Korea. Groundwater levels were observed for about one year using automatic monitoring sensors, and groundwater uses were estimated based on the monitoring data. Groundwater use in the area is closely related to irrigation for rice farming, and rising groundwater levels occur during the pumping, which may be caused by the irrigation water of rice paddies. Hydrochemical analysis results for two separate times (17 July and 1 October 2019) show that the dissolved components in groundwater decreased overall due to dilution, especially at wells in the alluvial aquifer and shallow depth. More than 50% of the samples were classified as CaHCO3 water type, and changes in water type occurred depending on the well location. Water quality changes were small at most wells, but changes at some wells were evident. In addition, the groundwater quality was confirmed to have the effect of saltwater supplied during the 2018 drought by comparison with seawater. According to principal component analysis (PCA), the water quality from July to October was confirmed to have changed due to dilution, and the effect was strong at shallow wells. In the study areas where rice paddy farming is active in summer, irrigation water may be one of the important factors changing the groundwater quality. These results provide a qualitative and quantitative basis for groundwater quality change in agricultural areas, particularly rice paddies areas, along with groundwater level and usage.

scholarly journals Changes of Groundwater Quality in the Sorrounding Pollution Sources Due to Earthquake Dissaster

2016 ◽  
Vol 20 (2) ◽  
Author(s):  
Sudarmadji Sudarmadji
Keyword(s):  
Groundwater Quality ◽  
Groundwater Level ◽  
Local Community ◽  
Pollution Sources ◽  
Quality Changes ◽  
Underground Structures ◽  
Domestic Water ◽  
Septic Tanks ◽  
Groundwater Supply ◽  
Dug Well

Groundwater is the main domestic water supply of the population of the Yogyakarta Special Region, both in the urban and as well as in the rural area due to its quantity and quality advantages. The rapid population growth has caused an increase of groundwater demand, consequently it is facing some problems to the sustainability of groundwater supply. Lowering of groundwater level has been observed in some places, as well as the degradation of groundwater quality. Earthquake which stroke Yogyakarta on 27 May 2006, damaged buildings and other infrastructures in the area, including roads and bridges. It might also damage the underground structures such as septic tanks, and pipes underneath the earth surface. It might cause cracking of the geologic structures. Furthermore, the damage of underneath infrastructures might create groundwater quality changes in the area. Some complains of local community on lowering and increasing groundwater level and groundwater quality changes were noted. Field observation and investigation were conducted, including collection of groundwater samples close to (the) pollution sources. Laboratory analyses indicated that some parameters increased to exceed the drinking water quality standards. The high content of Coli form bacteria possibly was caused by contamination of nearby septic tanks or other pollution sources to the observed groundwater in the dug well.

A comparison of emerging contaminant fingerprinting techniques to assess the impact of human wastewater on karst groundwater quality

2021 ◽  
Author(s):  
Luka Vucinic ◽  
David O'Connell ◽  
Donata Dubber ◽  
Patrice Behan ◽  
Quentin Crowley ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Karst Aquifer ◽  
Domestic Wastewater ◽  
Wastewater Effluent ◽  
Chemical Pollution ◽  
Karst Aquifers ◽  
Karst Springs ◽  
Aquifer Systems ◽  
Pollution Impacts ◽  
The Impact

<p>Lowland karst aquifers in Ireland are extremely complex to understand and are considered to be highly vulnerable to pollution (e.g. low-lying karst catchments exhibit a lot of surface water – groundwater interactions which makes them very susceptible to direct contamination). These aquifers are impacted by multiple contamination sources on land (in particular, rural sources from agriculture and on-site domestic wastewater effluent) which makes their protection and management challenging. Human wastewater effluent is identified as significant threat to groundwater quality in such lowland Irish karst environments, since approximately one-third of the population in Ireland is relying on decentralized wastewater treatment systems for the treatment of domestic wastewater. However, it is difficult to distinguish between human wastewater effluent and agricultural pollution impacts on karst aquifers using only traditional water quality parameters or any single environmental tracing method. Hence, the impact of microbial and chemical contaminants of human wastewater origin on groundwater quality must be assessed using a multiple-tracer approach, ideally targeting source-specific tracers. This paper presents an overview of the results obtained during the research conducted throughout the last several years at nine karst catchments in Ireland using a range of methodologies in order to determine and quantify domestic wastewater pollution impacts on karst springs. Microbial pollution was assessed using flow cytometric fingerprinting and faecal indicator bacteria, while chemical pollution impact assessment included the analysis of fluorescent whitening compounds (FWCs; well-known indicators of human contamination since their origin is mostly from laundry detergents), specific anion ratio signatures (Cl/Br), quantification and identification of microplastic particles using Fourier-transform infrared spectroscopy (FTIR), and faecal sterol and stanol profiles and ratios. A thorough analysis of the results obtained using a multiple-tracer approach has been conducted and methodologies have been evaluated in terms of applicability and sensitivity in a range of different karst catchments. The ability of these methodologies and techniques to determine and quantify human faecal pollution impacts on karst springs will be discussed. The results show a significant correlation between microplastic particle counts and detected FWCs signals at different springs, which helps to understand the contribution of household-derived contaminants to this environmental problem. Moreover, our results indicate that faecal sterols and stanols can be useful faecal source tracking method in karst aquifer systems despite the fact that concentrations of sterols and stanols of interest were usually low which makes the interpretation of results challenging.</p>

Groundwater Quality: Analysis of Its Temporal and Spatial Variability in a Karst Aquifer

Ground Water ◽  
2017 ◽  
Vol 56 (1) ◽  
pp. 62-72 ◽  
Author(s):  
Roger Pacheco Castro ◽  
Julia Pacheco Ávila ◽  
Ming Ye ◽  
Armando Cabrera Sansores
Keyword(s):  
Spatial Variability ◽  
Groundwater Quality ◽  
Karst Aquifer ◽  
Quality Analysis ◽  
Temporal And Spatial Variability ◽  
Temporal And Spatial

Summary of the AABB Interorganizational Task Force on Bacterial Contamination of Platelets: Fall 2004 impact survey

Transfusion ◽  
2006 ◽  
Vol 46 (4) ◽  
pp. 636-641 ◽  
Author(s):  
Marianne A. Silva ◽  
Kay R. Gregory ◽  
M. Allene Carr-Greer ◽  
Jerry A. Holmberg ◽  
Matthew J. Kuehnert ◽  
...  
Keyword(s):  
Bacterial Contamination ◽  
Task Force

Groundwater Quality Changes Resulting from a Surface Bromide Application to a Pasture

1985 ◽  
Vol 14 (4) ◽  
pp. 543-548 ◽  
Author(s):  
L. B. Owens ◽  
R. W. Van Keuren ◽  
W. M. Edwards
Keyword(s):  
Groundwater Quality ◽  
Quality Changes

scholarly journals Hydrogeological and geoecological risks while forecasting the quality of underground drinking water during its use (study, analysis, forecasting, management)

2019 ◽  
pp. 80-84
Author(s):  
V. Yu. Abramov ◽  
B. V. Borevsky ◽  
G. E. Ershov
Keyword(s):  
Drinking Water ◽  
Groundwater Quality ◽  
Groundwater Discharge ◽  
Quality Changes ◽  
Study Analysis ◽  
Quality Forecast

The hydrogeological, geoecological and economical risks connected with the non-confirmation of groundwater discharge, levels and quality forecast calculations while the evaluation of the reserves, have been considered. Improving the reliability of the forecasts of the potable groundwater quality changes and the corresponding reduction in the risks associated with their non-confirmation, can be achieved by carrying out the special hydrogeochemical researches of operated deposits, including isotope researches. On the basis of such studies, a comparison ofprediction calculations on the observed data of the results of the exploration and actually observed indicators of the quality of groundwater can be made, and the theoretical and methodical bases of subsoil study and forecasting can be performed.

Sign in / Sign up

Export Citation Format

Share Document