The effects of irrigation with treated wastewater on soil chemical and physical properties have been studied in many researches, but a few studies have done about waste water flow on the soil surface. In this study flow hydraulic of wastewater on soil surface was investigated and magnetic field effects on it was also studied. This research was done in the field with furrows (length of 42m, width of 60cm, depth of 25cm and slope of 0.1%) in Isfahan University of Technology and were used three water quality treatments consists of fresh water (FW), wastewater (WW) and magnetized wastewater (MW). Magnetic field was created by three magnets with constant magnetic field intensity of 10mili-Tesla for each one. Basic differences between three water treatments were in biological parameters (Chemical oxygen demand (COD), Total-coli form) and total suspended solids (TSS). The Collected data were included of advance and recession time, inflow and outflow rates with four replications and five irrigation events for each treatment (overall 60 practices), in a randomized complete block design. The inflow rate for furrows was determined 0.8 lit/sec. The results showed magnetic field have not a considerable effect on the physical and chemical characteristics of the wastewater, though it changes oxygen demand and especially total coli forms. Also no significant difference was observed between the effects of water quality treatments on water infiltration characteristics, consist of basic infiltration rate (fo)and mean infiltration rate in two 30 minutes' time intervals (0-30 and 30-60 minutes),but in mean infiltration rate in 0-30 interval, mean relative changes for the WW and MW were about twice of the FW. Mean infiltration rate of the FW has also less reduction than WW and MW in these intervals. However, scrutinizing of parameters variations in charts showed that WW and MW treatments relation to FW ones created more changes in downtrend of "f_o" during irrigation season and magnetic field effect was inconsiderable. The "f_o" in WW and MW was more than FW mostly. It was found that magnetic field causes increasing of the "f_o" in MW related to WW. Similar results also were found in two time intervals of infiltration process. Also excluding depletion time phase, evaluated time parameters, including advance time to furrow end, time to reach the "f_o" and recession duration had not difference significantly influenced by water quality treatments, but values of advance time and time to reach the "f_o for WW and MW than FW were higher mostly. According to regressions equation between water quality parameters and flow hydraulic parameters, were found a negative correlation between "f_o", mean infiltration rate for 0-30min and 30-60min ranges and advance time with TSS and irrigation number; and a positive correlation between these parameters with COD ; also a negative correlation between time to reach the "f_o" and depletion time with COD ; and a positive correlation between these parameters with TSS and irrigation number. In parameter of recession duration, positive correlations are with irrigation number and COD ; and negative correlation is with TSS.