sentences:  (IWMI, 2006) Informing the public of safe handling of food methods, the use of manure and mulching crop residue, less evasive tillage and rotating crops that do not need the same nutrients to improve the soils ability to hold water, and switching to short duration crops to decrease water consumption is advised.Proper application of reused drainage water during a crops growth cycle is optimal.In Giza, they have the largest governorate discharge of agricultural, industrial and domestic sewage that goes directly into the Nile through three drains without treatment.