Determination of heavy metals, agricultural pesticides and microbial contaminations of Mohammadiye Channel water for fish culture

This survey was carried out to investigate heavy metals, agricultural pesticides and microbial contaminations in Mohammadiyeh Channel extending Eslamshahr, Robatkarim and Shahriar cities of Tehran Province during the 2011.
The result of measurements of heavy metals including lead, copper,iron,cadmium, zinc and mercury in spring, summer and fall in comparison to existing standards showed that unfortunately except copper the amount of other heavy metals are higher than standard levels in the most of stations,Lead amounts in Nasir-Abad area,Dehshad,distance between 6,7 secondary channel (at stations 2,3,4 and 5), zinc in beginning and end of channel (at stations 1 and 5) , iron in beginning and end of channel and Dehshad area( at stations 1,3 and 5) , cadmium and mercury in all stations were higher than the standards for fish culture.the results of heavy metals showed that there is significant difference between the stations in different seasons (P<0/05).
The measured amounts of organophosphate and organochlorine pesticides and result of microbial contaminations culture were less than standard levels.there is significant difference between the stations in different seasons (P<0/05).