At present, natural fiber reinforced polymer matrix composites have received wide attention of the researchers from all over the world because of their outstanding advantages of environment friendliness, biodegradability, recyclability, cost-effectiveness and comparable physico-mechanical properties. Among various natural fibers easily available to human beings, Water Hyacinth (Eichhornea crassipes) is one of the cheapest fibers which have not been systematically explored so far. Water Hyacinth can be used as filler in composites materials in various polymer matrices. In this study, an attempt has been made to fabricate Water Hyacinth fiber based polymer composite and evaluation its impact behavior. For this composite preparation, Water Hyacinth fibers were used as reinforcement and the epoxy resin (ADR 246 TX) was used as the matrix. The fabrication of the composite is done by using hand layup techniques. The composite thus made was tested for its mechanical properties like hardness test and charpy impact test. The results showed that Water Hyacinth fibers presented a competitive reinforcement quality when they were compared with other natural fibers, as such jute, abaca, and rice straw.