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Well Water Contamination at Amining Extract Zone Near Marrakech City in Morocco

Yassir Barkouch and Alain Pineau

Seasonal variation on physicochemical parameters of well water at Draa Lasfar mining extract area in Marrakech - Morocco was studied. A total of 144 samples, 36 each during four different seasons, winter, spring, summer and autumn were collected during the years 2012-2013 and analyzed for temperature, pH, total hardness, Chemical Oxygen Demand, concentration of nitrate, heavy metals like lead, zinc, and cadmium. Significant difference between seasons was observed for temperature, Chemical Oxygen Demand, concentration of nitrate, zinc and cadmium. Highest temperature (28.72±3.16) was recorded during summer. Chemical Oxygen Demand and zinc concentration was recorded maximum during summer (167.25±31.05 mg/l, 131.4±12.0 µg/l respectively). Highest nitrate (2.67±0.75 mg/l) concentrations were recorded during spring. Highest lead (632.14±82.54 µg/l) and cadmium (1.93±0.36 µg/l) concentrations were recorded during winter.