The Central Pollution Control Board was established under the Water (Prevention and Control of Pollution) Act of 1974. The Act aims to prevent and control water pollution through the establishment of central and state pollution control boards. These boards are empowered to establish water quality standards, monitor polluters, and enforce penalties for violations. Key objectives of the boards include advising governments, guiding anti-pollution efforts, and coordinating nationwide programs to restore water quality. Major programs implemented include the Ganga Action Plan to reduce pollution in the Ganges river through sewage treatment and other measures.