The influence of seasonal changes on the properties of the borehole water in Abraka Ethiope east LGA Delta state, Nigeria was investigated. Composites samples from 7 representative quarters in Abraka township were collected and assessed for both dry and wet seasons. The vales of the various parameters were as follows: pH 6.3 to 7.1 for dry season and 6.2 to 8.00 for wet season; conductivity 62 to 84 µs/cm for dry season and 57 - 67 µs/cm for wet season; total suspended solids (TSS) 7.21 to 12.11 mg/L for dry season and 11.33 to 14.30 mg/L for wet season; total dissolved solids (TDS) 0.0 to 2.11 mg/L for dry season and 0.39 to 7.11 mg/L for wet season; biological oxygen demand (BOD) dry season 1.44 to 2.68 mg/L for dry season and 0.26 to 1.53 mg/L for wet season. The values for the trace metals and other parameters were within the WHO permissible limit for drinking water. The water is therefore portable.
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Agbaire et al. (2009) studied this question.
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