In Pakistan 32500 ha land is being irrigated with city effluent[3].Such irrigation practices provide crop yield as it contains large amount of organic material and in organic minerals essential for crop growth [4]. Sewage discharge is one of the problems presently facing urban communities and several efforts are being vigorously pursued to control it. Water contaminated by effluents from various sources is associated with heavy disease burden [5] and this could influence the current shorter life expectancy in the developing countries compared with developed nations [6]. In developing countries, most of which have huge debt burdens, population explosion and moderate to rapid urbanization, people rely heavily on water sources of doubtful quality in the absence of better alternatives, or due to economic and technological constraints to adequately treat the available water before use [7]. The scarcity of clean water and pollution of fresh water has therefore led to a situation in which one-fifth of the urban dwellers in developing countries and three quarters of their rural dwelling population do not have access to reasonably safe water supplies [8]