Assessment of groundwater quantity, quality, and associated health risk of the Tano river basin, Ghana  

作　　者：Adwoba Kua-Manza Edjah Bruce Banoeng-Yakubo Anthony Ewusi Enoch Sakyi-Yeboah David Saka Clara Turetta Giulio Cozzi David Atta-Peters Larry Pax Chegbeleh 

机构地区：[1]Water Resources Research Centre,Ghana Atomic Energy Commission,Accra,Ghana [2]Earth Science Department,University of Ghana,Legon,Accra,Ghana [3]Geological Engineering Department,University of Mines and Technology,Tarkwa,Ghana [4]Department of Statistics,University of Ghana,Accra,Legon,Ghana [5]Institute of Polar Sciences,National Research Council of Italy,Venice,Italy

出　　处：《Acta Geochimica》2024年第2期325-353,共29页地球化学学报（英文）

摘　　要：In the Tano River Basin,groundwater serves as a crucial resource;however,its quantity and quality with regard to trace elements and microbiological loadings remain poorly understood due to the lack of groundwater logs and limited water research.This study presents a comprehensive analysis of the Tano River Basin,focusing on three key objectives.First,it investigated the aquifer hydraulic parameters and the results showed significant spatial variations in borehole depths,yields,transmissivity,hydraulic conductivity,and specific capacity.Deeper boreholes were concentrated in the northeastern and southeastern zones,while geological formations,particu-larly the Apollonian Formation,exhibit a strong influence on borehole yields.The study identified areas with high transmissivity and hydraulic conductivity in the southern and eastern regions,suggesting good groundwater avail-ability and suitability for sustainable water supply.Sec-ondly,the research investigated the groundwater quality and observed that the majority of borehole samples fall within WHO(Guidelines for Drinking-water Quality,Environmental Health Criteria,Geneva,2011,2017.http://www.who.int)limit.However,some samples have pH levels below the standards,although the groundwater generally qualifies as freshwater.The study further explores hydrochemical facies and health risk assessment,highlighting the dominance of Ca–HCO3 water type.Trace element analysis reveals minimal health risks from most elements,with chromium(Cr)as the primary contributor to chronic health risk.Overall,this study has provided a key insights into the Tano River Basin’s hydrogeology and associated health risks.The outcome of this research has contributed to the broader understanding of hydrogeologi-cal dynamics and the importance of managing groundwater resources sustainably in complex geological environments.

关 键 词：GROUNDWATER Unsupervised machine learning technique HYDROCHEMISTRY Aquifer hydraulic parameter Health risk 

分 类 号：X523[环境科学与工程—环境工程] X820.4