Physicochemical and Microbiological Assessment of Borehole Water in Rumukalagbor, Port Harcourt, Rivers State, Nigeria
Physicochemical and Microbiological Assessment of Borehole Water in Rumukalagbor, Port Harcourt, Rivers State, Nigeria
摘要
The physicochemical and microbiological assessments of thirteen accessible boreholes in Rumukalagbor in Port Harcourt were ascertained. The studies were carried out in April （onset of the rains） and June （peak of the rains） and the results obtained showed that all the water samples tested were acidic （pH 3.12-5.18） with the samples having lower values in June. Eight boreholes （61.5%） had high conductivity values and all boreholes recorded high TDS （total dissolved solids）.These are indications of the presence of dissolved minerals/polluting agents. TH （total hardness） values for all the borehole samples were very low （20 mg/L-60 mg/L）, which are below WHO （World Health Organization） set limit of 200 mg/L. The levels of Ca and Mg ions were determined using AAS （atomic absorption spectroscopy） and these were also observed to be very low. Ca ion concentrations were 0.15 mg/L-20.1 mg/L and Mg ion concentrations were 0.10 mg/L-10.3 mg/L. All the samples but one exceeded the WHO limit for chloride ion concentration for potable water. These high levels can account for the high pH and conductivity values and since water from some boreholes are soft, they are prone to plumbosolvacy. Sulphate and nitrate concentrations in the samples are within the WHO allowable limits. The water samples showed minimal microbial load with 38.5% not having any microbial load.
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