Investigation of nitrate and nitrite concentration and other physicochemical parameters of drinking water sources in Saveh city during the year of 2018

Background and Nitrate, nitrite and other physicochemical parameters of the pollutants of groundwater resources which are mainly associated with agricultural and wastewater disposal areas. The aim of this study was to determine these parameters in drinking groundwater resource of Saveh city using Geographic Information System during the year of 2018 and investigation of contaminant’s in the region’s aquifer.
In this descriptive cross - sectional study, data including temperature, Nitrate, Nitrite, pH, TDS, Total hardness, Fluoride, Ammonium, Sulfate, Chloride, and Sodium’s monitoring in Saveh during the year of 2018. Monthly concentrations of these parameters were calculated, and then relationships between pollutants and region’s aquifer analyzed by GIS software version 9.3. Also, the Inverse Distance Wighted (IDW) method was used to estimate the conditions of the whole region.
Findings: The average concentration of chlorine, sulfate, electrical conductivity, total soluble solids, total hardness and sodium exceeds the permissible limits, and the non-qualitative water conditions are quite evident. Also, the amount of two magnesium and sulfate synergist ions that in their 1053 standard should not exceed 250 and 30 mg/l respectively, but unfortunately did not conform to this standard. It should be kept in mind that the high level of these two ions simultaneously can disrupt the harshness. Fluoride and nitrate levels were also acceptable range in all areas.
The highest deviation level from 1053 standard was for total soluble solids, sodium, magnesium, and sulfate. It is better to consider a comprehensive program to solve the problem, including use of nanotechnology, filtering or ion exchange