Investigation of Residual Concentrations of Organic Phosphorus Pesticides in Surface Water and Groundwater Sources Supplying Drinking Water of Kermanshah Province

Pollution of water sources with pesticides is one of environmental problem that threatens the health of communities. The aim of present study is the determination of residual organic phosphorous pesticides including diazinon, malathion, chlorpyrifos and glyphosate in surface and ground water on Kermanshah province (2015).
In this cross sectional-analytic study, 50 water stations in 5 geographical regions (north, south, east, west and central) was surveyed. Pesticide measurement was accomplished by extraction of liquid phase and mass gas chromatography. Data is analysis by SPSS software.
The residual organic phosphorus pesticides were not observed in any source of springs and aqueducts. The highest average residue (µg/L) of diazinon, chlorpyrifos, glyphosate and malathion were 1.45±0.2, 6.84±0.28, 0.005±0.001, 1.01±0.012, respectively. The wells at the central station was the highest and mirage in the in the northern station was the lowest total pesticide residue. The remaining amount of glyphosate was lowest. The total residues of glyphosate and malathion pesticides in the wells was below the maximum permitted concentration set by the European :union:.
Regarding the concentration of total organic phosphorus pesticides in the studied wells over the maximum permitted concentration of the European :union:, in the absence of control of the use of pesticides, the lack of regular monitoring of this important source of water and preventive programs for the health of water users in Kermanshah province with a serious threat.