Study the Effect ofPhysical, Chemical Parameters and Pesticides Residue on Drinking Water in Elmanagil Area

Abstract

This study was undertaken to evaluate the effect of some physical parameters , chemical parameters and pesticides residual of drinking water in El-Managil area. Ninety nine samples were collected from middle El-Managil townanddifferent villages around El-Managil, town. The samples were collected in July 2013 from zeer supplied by Turaa, zeer supplied by tank and tank supplied by Well. Water samples were analyzed for physical parameters variants such as Water Temperature (WT), total dissolved solids (TDS), total suspended solids (TSS) and Turbidity (using turbidity meter), pH, (using pH meter), chemical parameters such as Chlorides, Nitrates, Carbonate and Bicarbonate (measured by titration method),Calcium,Cadmium,Copper,Iron, Potassium, Sodium, lead, zinc (measured by Atomic Absorption Spectrophotometer), Phosphorus (using Spectrophotometer) and pesticides suchas (Sevin,) (measured by High Performance Liquid Chromatography),Malathionand,Cypermethrin (using Gas Chromatography).The results showed that the temperature readings ranged between (26.3 and 29 ° C). The pH values ranged between (7.1 and 8.2) were within the limits allowed by WHO. The water samples of Turaa showed the highest values of TSS ranged from (3.00 to 9.873 mg / l). For TDS all water sample values were below the WHO limits, the highest value( 673.653mg/l) which recorded in north El-Managil, (Altiquia), the water source was a tank supplied from well. The conductivity values ranged from (0.2 to 70.805) all values were below the WHO limits The turbidity values in most of the samples were higher than the WHO limit and ranged from (130.33 to 1618NTU), the highest value was recorded in west El-Managil,( Wad Al Amin),the source was Turaa water , water quality is untreated water. The concentration of minerals varied for the calcium, copper, potassium, sodium and zinc, all readings were below the WHO limit. The concentration of phosphorus was higher than the limit of the WHO the highest reading (57.00 mg / l) in El-Krimit (water source is Turaa). Cadmium concentrations were higher than WHO limit in some areas, and the highest concentration value (0,009mg/l) found in El-Managel town (middle) for untreated water (the source hole filled from Turaa) and Umtalha South El-Managil the source is Turaa.As for the iron the concentrations in some areas exceeded the limit of the WHO ,the highest value was recorded in northern El-Managil, Shasha, source of water is zeer filled from the tank ,The concentration was (1.57mg/l). For the lead element., in some areas, the concentration was (0.7 mg/l) exceeded the WHO limit in El-Kirimit, the source is zeer filled from Turaa. Chlorides, Nitrates, Carbonate, and Bicarbonate readings were below WHO permissible limit except Nitrates (NO3-), the concentration values were higher than the WHO permissible limit in El-Managil town (middle) water source Zeer filled from tank (treated water), concentration was (14.56 mg / l). The results showed that treated and untreated water samples show some concentrations values for pesticide residues; for malathion residue concentrations values were higher than WHO permissible limit. The highest value was (0.0032 ppm) recorded in Wad Alamin, water source Zeer filled from Turaa, , Cypermethrin concentrations values were higher than the WHO permissible limit with value (0.032 ppm) recorded in Abood for the source Zeer filled from tank, Sevin residue concentrations values werebelow than WHO permissible limit. In the area north El-Managil, no concentrations values for pesticide residues were found to untreated water samples. The study gave an overview that the water of the Turaa was the most common source of pollution for pesticide residues. As for the chemical and physical variables, the pollution included the water of the canals and the water of the tank.