Bacterial community and groundwater quality changes in an anaerobic aquifer during groundwater recharge with aerobic recycled water

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.

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

Forum Geografi ◽

10.23917/forgeo.v20i2.1813 ◽

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.

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Identification of Groundwater Recharge Potential Zones and Groundwater Quality Mapping Using Remote Sensing and GIS

10.1007/978-3-030-80312-4_41 ◽

2021 ◽

pp. 457-497

Author(s):

Aiswarya R. Nair ◽

Ajay Suresh ◽

Aman Saju ◽

Ganga Sankar ◽

Rinu J. Achison

Keyword(s):

Remote Sensing ◽

Groundwater Quality ◽

Groundwater Recharge ◽

Remote Sensing And Gis ◽

Recharge Potential

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System Modeling, Optimization, and Analysis of Recycled Water and Dynamic Storm Water Deliveries to Spreading Basins for Urban Groundwater Recharge

Water Resources Research ◽

10.1029/2018wr024411 ◽

2019 ◽

Vol 55 (3) ◽

pp. 2446-2463 ◽

Cited By ~ 7

Author(s):

Jonathan L. Bradshaw ◽

Mauricio Osorio ◽

Theo G. Schmitt ◽

Richard G. Luthy

Keyword(s):

Groundwater Recharge ◽

System Modeling ◽

Urban Groundwater ◽

Storm Water ◽

Recycled Water

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Microbial population changes during managed aquifer recharge (MAR)

Microbiology Australia ◽

10.1071/ma09033 ◽

2009 ◽

Vol 30 (1) ◽

pp. 33

Author(s):

Simon Toze ◽

Deborah Reed

Keyword(s):

Water Quality ◽

Population Dynamics ◽

Population Structure ◽

Microbial Population ◽

Managed Aquifer Recharge ◽

Quality Changes ◽

Aquifer Recharge ◽

Population Changes ◽

Recycled Water ◽

Microbial Population Dynamics

Managed aquifer recharge (MAR) is a technique that can be used to capture and store water in aquifers under managed conditions for later recovery and use for specific purposes. There is a need to predict water quality changes during MAR, particularly when recycled water is used as the recharged water. An understanding of the interaction between the geochemistry of the aquifer and the microbial population dynamics in the groundwater is important for understanding any water quality changes. A study was undertaken to monitor the changes in the microbial population and link this to changes in the geochemistry. The results obtained showed that the recharge of recycled water to aquifers causes a change in microbial population structure which has direct links to corresponding changes in geochemistry.

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Recycling water in U.S. cities: understanding preferences for aquifer recharging and dual-reticulation systems

Water Policy ◽

10.2166/wp.2019.162 ◽

2019 ◽

Vol 21 (6) ◽

pp. 1207-1223 ◽

Cited By ~ 1

Author(s):

David J. Hess ◽

Brandi M. Collins

Keyword(s):

Water Supply ◽

Groundwater Recharge ◽

Power Plants ◽

Potable Water ◽

Water Source ◽

Water Supply Systems ◽

Aquifer Recharge ◽

Recycled Water ◽

Water Supplies ◽

Supply Systems

Abstract Recycling of effluent water from urban water-supply systems is often a more sustainable water source than increased use of surface sources, groundwater sources, and desalination. However, water-supply organizations (WSOs) often do not take full advantage of recycled water. Although recycling water for direct potable use is efficient, public concern with safety has tended to cause WSOs to favor other uses for recycled water. This study examines patterns in the degree of utilization of two main indirect uses of recycled water: dual-reticulation systems and groundwater recharge. Drawing on case studies of four U.S. cities that are leaders in the use of recycled water, the study identifies conditions that favor the choice of one option over the other. Where cities are concerned with groundwater recharge of potable water supplies, they tend to prefer non-recycled water if available for recharge projects. However, where non-recycled water supplies are limited, recycled water may be prioritized for aquifer recharge. Otherwise, the preference is for use by large industrial partners such as power plants or for exchanges for higher-quality potable water resources with rural systems. In contrast, dual-reticulation (purple-pipe) systems for direct nonpotable recycling face steep economic and technical challenges.

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