Along with the technological developments and population growth, the environmental pollution has increased, considerably in different areas, especially in agricultural and industrial areas. Overuse of chemical fertilizers, particularly nitrogen and phosphorus fertilizers are of harmful activities that besides damaging the environment, can disturb the balance of nutrients for plant. On the other hand, not application of organic fertilizers and micronutrients induce micronutrients deficiencies, which in turn suppress the nutritional quality of plants and endanger the human health. Vegetables are of high nutritional value, they should be consumed at the best quality and safety standards. Therefore, the objective of this study was to evaluate the nitrate, phosphate, iron, and zinc nutritional status in major vegetables produced i Loresta province. It is noteworthy that this province is a center for intensive farming of different vegetables in Iran. A number of major areas of vegetable cultivation in the province were selected and samples of plants, soils and irrigation waters were collected and analyzed for nitrate, phosphate, iron, and zinc concentration. At the same time some other chemical and physical parameters of soils and waters, were also measured and the management practices of the farms were recorded by filling the questionnaires. The results showed that the mean nitrate concentrations in vegetables exceeded the maximum permitted levels (0.25 to 0.30% of dry weight). The accumulation of nitrate in leafy vegetables was much higher than the tuber vegetables. Significant positive correlations were observed between nitrate concentration in plants and nitrate in soil and water. The highest mean nitrate concentration was observed in vegetables produced in Boroojerd. Based on the soil testing and fertilizer recommendations, the soil-P levels in almost all vegetable farms were way above the sufficient level, although the soil was not P-contaminated, considering the environmental standards. The iron and zinc concentrations in the soil and plant samples were at the adequate range, but the ratios of P/Fe and P/Zn were high that may cause the deficiency of the micronutrients in the vegetables and thereby in the vegetable consumers. Overuse of N-fertilizers (mainly urea) and P-fertilizers (mainly ammonium phosphate), the application of urban sewage as irrigation water and neglecting the micronutrient application are the main reasons for the nitrate contamination and the imbalanced P/Fe and P/Zn ratios in the region. Keywords : Leafy vegetables, Tuber vegetables, Nitrate contamination, Plant nutrition, Phosphate, Iron, Zinc, Lorestan Province