Paryavaran Suraksha Samiti & Anr vs Union Of India & Ors

The Supreme Court directed that no industry requiring 'consent to operate' from the Pollution Control Board shall function without a fully operational primary effluent treatment plant. The Court mandated that State Pollution Control Boards issue notices to all such industries to ensure compliance within three months, failing which their operations would be halted and electricity supply disconnected. The ruling emphasizes the necessity of maintaining effluent treatment facilities to prevent pollution, establishing a clear legal obligation for industries to adhere to environmental standards.