Phenolic substances are one of the major pollutants present in liquid wastes. Gas - liquid Chromatography and Ultra-Violet Spectroscopy, widely used for their detection and estimation, both require costly and sophisticated instrument and expertise. A simple sensitive and inexpensive Test paper for estimating phenolic substances is hence propounded. 2,6 chloroquine, 4- chloramine in benzene is used as a chromogenic reagent to yield a colored indophenol dye. The sensitivity of the estimation at ppm level.