Spatial assessment of groundwater degradation using physicochemical analysis and GIS: Case study of the basement complex of Ado Ekiti, southwest Nigeria

Akintunde Akinola Oyedele; Jonathan Segun Adekanmi; Abel Ojo Talabi; Lekan Olatayo Afolagboye; Olufemi Felix Ojo

doi:10.5935/jetia.v8i36.826

Autores

Akintunde Akinola Oyedele Departamento de Física, Ekiti State University, Ado – Ekiti, Nigéria http://orcid.org/0000-0003-0428-7566 (não autenticado)
Jonathan Segun Adekanmi Departamento de Engenharia Civil, Politécnico Federal, Ado – Ekiti, Nigéria http://orcid.org/0000-0002-9798-6931 (não autenticado)
Abel Ojo Talabi Departamento de Geologia, Ekiti State University, Ado – Ekiti, Nigéria http://orcid.org/0000-0002-1733-3368 (não autenticado)
Lekan Olatayo Afolagboye Departamento de Geologia, Ekiti State University, Ado – Ekiti, Nigéria http://orcid.org/0000-0002-4365-3269 (não autenticado)
Olufemi Felix Ojo Departamento de Geologia, Ekiti State University, Ado – Ekiti, Nigéria http://orcid.org/0000-0002-9280-6030 (não autenticado)

DOI:

https://doi.org/10.5935/jetia.v8i36.826

Resumo

A avaliação espacial da degradação das águas subterrâneas foi realizada em Ado-Ekiti usando análise físico-química e Sistema de Informação Geográfica (GIS). Amostras de água subterrânea de 108 poços foram analisadas regionalmente. A aplicação do SIG permitiu a elaboração de vários mapas temáticos que foram analisados em termos de padrões de qualidade das águas subterrâneas para consumo e utilidade doméstica. Os mapas temáticos de pH, Dureza Total, Sólidos Dissolvidos Totais (TDS), Concentrações de Cloreto, Cálcio e Nitrato produzidos foram reclassificados para integração em ambiente SIG para produzir o mapa de qualidade da água subterrânea. Influências antrópicas foram observadas no estado da qualidade das águas subterrâneas da área de estudo, uma vez que as águas subterrâneas não potáveis foram delineadas nas áreas construídas e nas regiões adjacentes aos córregos e rios. A integração dos mapas temáticos revelou-se útil para a delimitação de zonas de qualidade das águas subterrâneas adequadas ao consumo humano e aos fins domésticos. A análise espacial da qualidade das águas subterrâneas é essencial para uma compreensão adequada dos desafios ambientais presentes e uma projeção para o futuro. Isso facilitará a tomada de decisões rápidas para o desenvolvimento e gestão holística das águas subterrâneas.

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