The Water (Prevention and Control of Pollution) Act, 1974, The Air (Prevention and Control of Pollution) Act, 1981, and The Environment (Protection) Act, 1986 are the three main legislations in India that aim to protect and improve the environment by regulating the discharge of pollutants into the environment.

The primary objective of the National Green Tribunal (NGT) is to adjudicate environmental disputes. It is a specialized environmental court that hears and decides cases related to environmental protection and conservation.

IS 2490:1974 is the Indian standard that specifies the permissible limits for the discharge of pollutants into water bodies. It provides guidelines for the discharge of various pollutants, including suspended solids, biochemical oxygen demand (BOD), chemical oxygen demand (COD), and heavy metals.

The Central Pollution Control Board (CPCB) is the apex body in India for monitoring and regulating pollution. It is responsible for enforcing environmental laws and regulations, providing technical assistance to industries on pollution control, and coordinating with state pollution control boards to ensure effective implementation of environmental policies.

IS 5182 (Part 1):2014, IS 5182 (Part 2):2014, and IS 5182 (Part 3):2014 are the Indian standards that specify the permissible limits for the emission of air pollutants. They provide guidelines for the emission of various pollutants, including particulate matter, sulfur dioxide, nitrogen oxides, and carbon monoxide.

State Pollution Control Boards (SPCBs) are responsible for implementing environmental laws and regulations at the state level. They monitor and regulate pollution within their respective states, provide technical assistance to industries on pollution control, and coordinate with the Central Pollution Control Board (CPCB) to ensure effective implementation of environmental policies.

IS 9989:1981 is the Indian standard that specifies the permissible limits for noise pollution. It provides guidelines for the maximum permissible noise levels in different areas, such as residential, commercial, and industrial areas.

The Hazardous Waste (Management, Handling, and Transboundary Movement) Rules, 2016 aim to regulate the management, handling, and transboundary movement of hazardous waste. They are designed to prevent and minimize the generation of hazardous waste, promote the safe disposal of hazardous waste, and ensure the proper management of hazardous waste throughout its lifecycle.

IS 2690:1989 is the Indian standard that specifies the permissible limits for the disposal of solid waste. It provides guidelines for the safe disposal of various types of solid waste, including municipal solid waste, industrial solid waste, and hazardous waste.

The National Ambient Air Quality Standards (NAAQS) aim to set limits for air pollutants in ambient air. They are designed to protect human health and the environment, ensure sustainable development, and prevent air pollution from causing adverse effects on human health and the environment.

IS 10805:1984 is the Indian standard that specifies the permissible limits for the discharge of pollutants into the soil. It provides guidelines for the discharge of various pollutants, including heavy metals, pesticides, and organic compounds.

The Environmental Impact Assessment (EIA) process in India aims to assess the environmental impact of proposed projects, identify and mitigate potential environmental impacts, and ensure sustainable development. It is a mandatory process for certain types of projects that have the potential to cause significant environmental impacts.

IS 14543:2004 is the Indian standard that specifies the permissible limits for the discharge of pollutants into groundwater. It provides guidelines for the discharge of various pollutants, including heavy metals, pesticides, and organic compounds.

The Ministry of Environment, Forest and Climate Change (MoEFCC) is the nodal agency in India for formulating and implementing environmental policies and regulations. It coordinates with other ministries and agencies on environmental issues, promotes sustainable development, and ensures the effective implementation of environmental laws and regulations.

IS 2066:2006 is the Indian standard that specifies the permissible limits for the emission of air pollutants from vehicles. It provides guidelines for the emission of various pollutants, including particulate matter, sulfur dioxide, nitrogen oxides, and carbon monoxide, from different types of vehicles.