Under water concreting is used in structures such as docks, bridges, piles in areas with high groundwater levels, and filler mortars in tunnels below the water surface. Concrete washout is a major issue, where extensive research is needed to evaluate all aspects that affect it. There should also some tests be done to determine the quantity and quality of concrete washout and the effects of it on “under water concreting”. In this paper, attempts have been made to present the quantitative and qualitative evaluation of concrete washout carried out by various researchers, including qualitative tests such as Drop Test and Stream Test and quantitative tests such as PH determinations, Determining the resistance of freshly mixed concrete to washing out in water (based on CRD-C61), Spray Test, concrete compression strength test under water, and a fresh concrete sample weight loss in a pressurized water reservoir. In some references, several criteria have been presented for the results of these tests. For structural evaluation, concrete strength should be measured using sampling under water or using a sample that is used in concrete weight loss tests in water. Also, when the amount of water pollution in an area is considered, in addition to the strength tests, the determination of PH and the amount of solids suspended tests in water should be done and their results should be compared with standard limitations to the water quality of the area.