Study of microbial and nitrate contamination in groundwater aquifers

The important issue of groundwater resources, understanding the characteristics of the local watershed or aquifer, identifying those that are infected and their management. In November 1395 of 8 wells sampled to assess and evaluate qualitative factors threatening groundwater resources was Yasouj. The factors measured in wells containing physical parameters (temperature, color and smell), chemical parameters (TDS, TSS, EC, pH), anion(CO3, SO4, Cl, NO3, NO) cations (K Mg Na ) heavy metals(Cd, Ag, Pb)and MTBE are. In situ pH and electrical conductivity and water temperature were measured. To measure the concentration of trace elements using atomic absorption furnace graphite concentration of anions by titration and potentiometric, concentrations of cations (Mg) using titration and Na, K by flame and measurements of MTBE by gas chromatography for was. The results of increased nitrate anion, sulfate and chloride in southern and western stations showed that the cause may be associated with the slope of the northeast to southwest and a sandy texture region. High concentrations of cations in the well of the East and Northeast region is visible in the case of potassium due, can be clay, drainage wells absorption and fertilizer in green space areas related Danstdamnh chloride concentration in the wells in the area between 94/9 and 99/2 at the station in station No. 5 is the migration of water in all wells was less than the standard set. In the case of heavy metals due to zoning maps and charts concentrations indicate the lack of ground water pollution area to the heavy metals lead and silver. The concentration of cadmium in all wells to a ratio of more than standard: μg / L> 1 is the cause of which can be washed off the streets and contaminated soil during rains, he said. In general it can be said from West to East potassium concentration, TDS, EC and from East to West nitrate concentration shows an upward trend.