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Assessment of groundwater quality for drinking and irrigation: the case study of Teiman-Oyarifa Community, Ga East Municipality, Ghana

Author(s): M. Ackah | O. Agyemang | A. K Anim, et al.

Journal: Proceedings of the International Academy of Ecology and Environmental Sciences
ISSN 2220-8860

Volume: 1;
Issue: 3-4;
Start page: 186;
Date: 2011;
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Keywords: agriculture | dominance | groundwater | drinking | physicochemistry | salinity

The suitability of groundwater quality for drinking and agricultural purposes was assessed in a predominantly farming and sprawling settlement in the Ga East Municipality (Ghana). Various water quality parameters were determined to assess groundwater quality of 16 wells in Teiman-Oyarifa community. Standard methods for physicochemical determinations were employed. Hand-dug wells, boreholes and pipe borne water samples were collected within the locality and analysed. Results showed the temperature range of 19.5 oC-26.7 oC, pH range of 4-7.4, conductivity range of 214-2830 uS/cm, total dissolved solids, 110-1384 mg/L, bicarbonate, 8.53-287.7mg/L, chloride, 28.41-813.8 mg/L, Flouride, below detection limit -0.4667mg/L, Nitrate 1.9-4625 mg/L, sulphate, 16.35-149.88mg/L. Results of analysis carried out using Atomic Absorption Spectrophotometry showed metal concentrations of Fe ranging from 0.212-3.396 mg/L, Mn 0.01-0.1 mg/L, Ca 0.39-9.97 mg/L. The ionic dominance for the major cations and the anions respectively were in these order; Na+ >K+ >Mg+ >Ca+ and Cl- >HCO3- >SO4- >NO3 -. Most of the samples analyzed were within the Guidelines set by both national and international bodies for drinking water. Most of the groundwater samples fell in the US Salinity Laboratory Classification of C2-S1(medium salinity-low SAR).

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