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Effect of Agrochemical Use on the Drinking Water Quality of Agogo, a Tomato Growing Community in Ashanti Akim, Ghana


The effect of agrochemical use in agricultural activities on the drinking water quality of ground and surface water within Agogo, a prominent tomato growing area in the Ashanti region of Ghana was assessed by monitoring physicochemical parameters, trace metals and microbial quality of two water sources. Levels of contamination were greater in surface water than groundwater. Trace metal levels (mg/L) were 1.40, 0.12, 0.08 and 0.18 in surface water and 0.08, 0.10, 0.05 and 0.08 in groundwater for Fe, Pb, Zn and Cd, respectively. Lead and Cd in surface and groundwater exceeded USEPA maximum acceptable levels (MCLs) for drinking water. Bacterial indicator numbers (geometric means/100 mL) in surface water varied from 9.35 × 105 to 1.57 × 1011 for total coliforms, 4.15 × 104 to 2.10 × 107 for faecal coliforms and 2.80 × 10 to 3.25 × 102 for enterococci, but none was found in groundwater.

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Correspondence to J. N. Hogarh.

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Obiri-Danso, K., Adonadaga, M.G. & Hogarh, J.N. Effect of Agrochemical Use on the Drinking Water Quality of Agogo, a Tomato Growing Community in Ashanti Akim, Ghana. Bull Environ Contam Toxicol 86, 71–77 (2011).

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  • Agrochemicals
  • Heavy metals
  • Water quality
  • Vegetable farmers
  • Ghana