In this review paper was conducted on environmental impact and water quality assessment. The Environmental Impact is a tool used to determine, forecast, assess, and, if required, prevent or correct the environmental effects of a project. All living things require water as one of their basic necessities. Water is necessary for humans in everyday activities, including drinking, washing, bathing, and cooking, etc. Water that is of poor quality cannot be used for ingesting or for other purposes. The characteristics of water's physical, chemical, and biological makeup are typically used to define its quality. Finding water that is suitable for drinking, irrigation, and industrial use becomes essential as a result. The usefulness of the water for irrigation purposes will be determined by the groundwater quality based on the sodium percentage, sodium absorption ratio, and residual sodium carbonate. Aquatic organisms are being lost due to the rapid industrialization of farmland and the use of chemical pesticides and fertilizers. The human contracts water-borne illnesses as a result of using contaminated water. A significant statistical addition to the comprehension and management of interconnected water bodies was made by the application of GIS techniques and the water quality index in the evaluation of water quality in the context of reservoir systems.