The government has taken many steps to solve problems regarding pollution in India.
For eg: The Ganga Action Plan

River Ganga has been polluted for many years by the people who live near it. They have been dumping a lot of sewage,animal, wastes, hot water etc in the river.To prevent this the government of India started the Ganga Action Plan . This Plan has to a great extent helped to reduce the pollution level in the river.
The government has also taken steps to save the Taj Mahal from acid rain by preventive measures.
But we still have a long way to go before everything is completely free of pollution...