Chloride (Cl^-) transport in soil can be affected by amendments such as sodium polyacrylate (SAP) and polyacrylamide (CLP). Four levels (0.0, 0.1, 0.3 and 0.5% w/w) for either SAP/CLP were mixed with sandy loam soil then packed in PVC columns (25 cm - long and 4.5 cm - inner diameter). Breakthrough curves (BTC) were established using a replacement fluid of either potassium or calcium chloride at a concentration of 0.1 molar under a head pressure of 2 cm then described using the program of CXTFIT. The dispersion (D), dispersivity (α), and retardation coefficient (R) of Cl^- were obtained by the program. The CXTFIT described the observed data of BTC well with a determination coefficient of more than 0.97. According to the dispersivity criteria, all the studied treatment possessed a preferential flow, but the CLP 0.5% treated soil using CaCl₂ soil had a matrix flow/dispersive flow. The reported results of average pore-water velocity (v), D), and α decreased significantly as the rates of both hydrogels increased. Contradictory, the observed complete breakthrough times and R increased significantly as the rates of both hydrogels increased. This time was longer using the KCl replacement solution than using that of the CaCl₂ solution. It is obvious that using CaCl₂ with CLP-treated soils was vital for reducing the dispersion coefficient and boosting the retardation coefficient. The use of hydrogel appears to be a good option for controlling leaching of such a compound. The results of the present work might be a platform towards controlling and managing the water resource contamination by nonorganic or organic compounds.