الفهرس 
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Abstract
Waste-water may be used for complimentary irrigation of
crops in the North East region of Egypt. Potentiality of using
waste-water as an accepted source for irrigation water became
necessity to overcome the shortage in quantity of water required
for irrigating the arable soils. However, implications of using
such Waste-water on accumulation of heavy metals in soil and
plant must be assessed periodically to avoid the possible havards
of using such a water for irrigation purposes. To fulfill the
targets of the current study, water, soil and wheat samples were
collected from 10 sites (with 5 km distance between sites) along
the drain of Belbais and analyzed for their contents of Pb, Co
and Cd. Water, soil and plant contents of these metal ions were
compared with the normal and maximum permissible limits of
their presence in water, soil and plant. The relations between
concentrations of these metal ions in water, soil and plant were
investigated. The results obtained from this study could be
summarized as follows:
· Contents of Pb in water were within the permissible levels
recommended by FAO; however, there was a significant
progressive increase from site 1 to 5 along the drain (North-
East direction) beyond which gradual decrease occurred. The
Co content in Waste-water exceeded the acceptable limits
and progressively increased from site 1 to 10. Soluble Cd in
waste-water varied between 0.01 and 0.03 mg L-1 with an
irregular pattern and these concentrations were far below the
permissible level.