Investigation of Quality and Usage of Groundwater near Slaughter Houses in Basement Complex of Osun State, Nigeria
The importance of groundwater as a source of drinking water for the rural populace of southwestern Nigeria has stimulated public interest in the impact of continuous discharge of untreated wastewater from slaughter houses on water quality in the region. Physical and chemical properties of groundwater located near slaughter houses in Osun State, southwestern Nigeria were evaluated. Groundwater samples from six randomly selected well sites were analyzed for turbidity; pH; total suspended solids (TSS); total dissolved solids (TDS); electrical conductivity (EC); sodium adsorption ratio (SAR); Na+, K+, Ca++, Mg++ and NO3- ion concentrations and the microbial content to determine the suitability of the water for drinking or irrigation purposes. The qualitative analysis reveals that only two sites (4 and 6) having values of 300 mg/mL and 460 mg/L respectively, out of the six locations considered, had groundwater quality within the recommended limits for TDS (<500 mg/L for drinking purposes). Three sites (2, 4 and 6) had EC values of 748.8, 504.4, and 184.3 μS/cm respectively, (<750μS/cm recommended for irrigation water), and thus can be used for irrigation with adequate attention on irrigation duration and frequency, drainage, and crop species. However, none of the groundwater samples satisfy the World Health Organization (WHO) guidelines for drinking water quality and are therefore not recommended for drinking.
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