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In arid and semi-arid regions, farmers use low quality groundwater because of limited availability of high quality irrigation water; instead, magnetized water can be used for irrigation given its better quality. Magnetized water is obtained by passing water through permanent magnets or through electromagnets installed in or on a feeding pipeline. This study at the Gorgan Agricultural and Natural Resources Research Center, Gorgan province, Iran, investigated soil moisture distribution from trickle irrigation. Treatments were magnetic and non-magnetic water and sub-treatments involved the addition of 200 mg/L calcium carbonate and 400 mg/L calcium carbonate with well water providing the control. The experiment was laid out with a complete randomized block design with three replications. Soil moisture around the drippers was measured for 1, 2 and 3 days after irrigation during the 3-month irrigation period. The results show that the differences in soil moisture for days 1, 2 and 3 after irrigation with magnetized irrigation water were lesser than those for the non-magnetized irrigation water treatments. Irrigation with magnetized irrigation water caused higher soil moisture compared with the non-magnetized irrigation water for different irrigation water salinities. The use of magnetized water for irrigation is recommended to improve irrigation efficiency.