Abstract
This study was conducted to assess the physicochemical quality of groundwater around municipal solid waste dumpsites in Obio-Akpor Local Government Area. Four objectives guided the research: to assess the physicochemical quality of leachates from municipal solid waste dumpsites, to assess the physicochemical quality of groundwater around municipal solid waste dumpsites, and to assess the concentration of heavy metals (Lead, Arsenic, Cadmium) in groundwater around municipal solid waste dumpsites in Obio Akpor Local Government Area. Groundwater samples were collected from twelve boreholes around two dumpsites at distances of less than 50 meters and 51-300 meters from the dumpsites. Six leachate samples were collected from the drains of both dumpsites. The samples were analyzed for physicochemical parameters, including pH, Electrical Conductivity (EC), Temperature, Turbidity, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Chloride, Fluoride, Nitrate, Salinity, Dissolved Oxygen (DO), Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Arsenic, Lead, and Cadmium. The physicochemical analysis revealed that all samples had acidic pH levels below the WHO and NSDWQ permissible limit. Parameters such as Temperature, Electrical Conductivity, Turbidity, Nitrate, Fluoride, Chloride, Total Dissolved Solids, and Total Suspended Solids were within WHO guidelines. However, Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Salinity, Fluoride, Dissolved Oxygen (DO), Arsenic, Lead, and Cadmium exceeded the WHO permissible limits, indicating groundwater contamination. Statistical analysis using one-way ANOVA showed significant differences (p < 0.05) in the contamination levels of most parameters across the distances.
References
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