Biosorption is a physico-chemical binding of a substance to biological material. Water hyacinth has been successfully utilized for the removal of chromium (VI) from waste water samples. The plants were divided in to two part (i) root (ii) foliage. Each part was dried at 750 C for 48 hours and then its weighed was taken. The tissue samples weight then ash in the muffle-furnace at 3500 C for 5 hours. Ash samples were digested with acids (HNO3, HCl) and diluted with 100 ml of distilled water. The detection of chromium (VI) carried out by Atomic Adsorption Spectrophotometer (AAS). This method of removing chromium from water is cost-effective, eco-friendly, and has been shown to be effective in laboratory studies.