ESTD Year: 2017 | Impact Factor: 6.9
DOI Prefix: 10.47001/IRJIET
Vol 10 No 8 (2026): Volume 10, Issue 8, August 2026 | Pages: 79-94
International Research Journal of Innovations in Engineering and Technology
OPEN ACCESS | Research Article | Published Date: 31-08-2026
Groundwater is an essential source of freshwater for domestic, agricultural and institutional activities, particularly in rapidly developing environments. However, close occurrences of open dumpsites and groundwater sources can increase the potential risk of contamination. This study mapped dumpsites/septic tanks, boreholes and hand-dug wells spatial proximity within the Federal University of Technology, Akure (FUTA) and surrounding communities. GPS receiver and Mobile Topographer application were used in data collection, resulting to identification of 89 dumpsites, 76 boreholes, 100 hand-dug wells, 100 septic tanks and 121 water reservoirs. Database were organized and analyzed in QGIS-Geo-Package, using the Universal Transverse Mercator (UTM) Zone 31N coordinate system. Buffer zones of 100, 250 and 500 m were generated around dumpsites, while Euclidean distance analysis was used to determine the distance of each groundwater source from its nearest dumpsite. The results revealed that distances ranged from 2.18 to 427.18 m; with Mean nearest-dumpsite distances of 87.92 m for boreholes and 74.56 m for hand-dug wells. Out of the 176 groundwater sources analyzed, 131 (74.4%) were located within 100 m of a dumpsite, 36 (20.5%) occurred between 100 and 250 m, and 9 (5.1%) between 250 and 500 m respectively. However, none was located beyond 500 m. Given the recommended minimum separation distance of 100 m, most groundwater sources require closer environmental attention. Therefore this study is hereby recommended for adoption, with the view to supporting buffer zones enforcement, prioritizing water-quality testing at high-risk locations, and using the geospatial database to guide future groundwater and waste-management planning.
Groundwater Sources; Dumpsites; Spatial Proximity; Geographic Information System (GIS); Environmental Risk Assessment.
Tukka A. A., Nzelibe I. U., Adiat K. A., Igejongbo T. F., Fayeun L. S., & Fawole I. D.. (2026). Spatial Mapping and Proximity Assessment of Groundwater Sources and Dumpsites within FUTA and Its Environs. International Research Journal of Innovations in Engineering and Technology - IRJIET, 10(8), 79-94. Article DOI https://doi.org/10.47001/IRJIET/2026.108009
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