In this study, zoning and the effect of heavy metal concentration on the incidence of cancer, the effect of land use, the location of quifers, the assessment of carcinogenic and non-carcinogenic health risks of heavy metals for 104 drinking water sources and 1248 samples based on standard sampling methods (using It was measured by atomic absorption method equipped with graphite furnace) from drinking water sources. Then statistical indicators and spatial information system were used to compare and analyze the data. According to the obtained results, the highest concentrations of arsenic, chromium and zinc correspond to Bashet, Behmai and Cheram cities respectively (15.47 ± 10.52, 292.21 ± 312.29, 599.09 ± 320.74 micrograms per liter) Is; that the concentration of arsenic and chromium in some sources is higher than the standard. One-way analysis of variance showed that there is a significant difference between the average concentration of arsenic, chromium and zinc in the cities (P. Value < 0.05). The average health risk factor of arsenic in Bashet and Chrome in Behmai city is higher than 1. According to the results of the average cancer risk of arsenic in the drinking water sources of Basht, Gachsaran and Behmai and chromium in the water sources of Behmai and Gachsaran have a definite risk of cancer.