Thermal and fly-ash pollution from power infrastructure threatens coastal wetlands and fisher livelihoods. Discuss the regulatory gaps and suggest remedies.

Coastal coal power plants discharge heated water into estuaries and leak fly ash into them. In August 2026, an estimated 4–6 tonnes of fish died in Chennai's Ennore Creek, and fishers lost about three weeks of work [1]. The laws already exist. The failure lies in investigating incidents, checking compliance and fixing responsibility.

Threats to wetlands and livelihoods

• Thermal discharge raises water temperature and lowers dissolved oxygen, which stresses fish and the creatures living on the creek bed.
• Fly-ash leaks choke creeks and mangroves. Residents flagged ash leaks, illegal emissions and hot-water discharge at Ennore [1].
• Livelihood loss: fishing communities carry the industry's costs, a clear case of environmental injustice.

Regulatory gaps

• No incident protocol: an RTI reply showed that no official report existed on the fish kill's cause or on any action taken [1]. If no cause is recorded, no one can be held liable.
• Polluter-pays only on paper: the Fly Ash Utilisation Notification, 2021 requires plants to use 100% of their ash and allows environmental compensation [2]. However, compensation requires the cause to be proven, and it does not pay fishers for lost days.
• Self-reported data: plants report their own figures for ash generated and used. CPCB has had to direct that these figures be verified [3].
• Diffused accountability: residents assessed 24 bodies. Five scored zero, including TNSCZMA, PWD, the Energy Department and the Chief Secretary's office [1].
• Court orders not enforced: the NGT has demanded time-bound plans for 100% ash use [4], yet court directions at Ennore remain unmet [1].

Remedies

• Fish-kill SOP: the Pollution Control Board and Fisheries Department should test temperature, dissolved oxygen and metals within days, then publish the cause and the action taken.
• Independent third-party audits of ash ponds and outfalls, with public reports.
• Livelihood relief fund, financed by levies on polluters and kept separate from environmental compensation.
• One nodal officer under the Chief Secretary to track every court direction.
• Formal social audit: make residents' report cards [1] part of official monitoring, and require continuous temperature monitoring at outfalls.

The pollution continues because of weak investigation, unverified data and the lack of a single owner, not because laws are missing. Turning polluter-pays into actual payments and citizen audits into official inputs would protect wetlands and fishers alike. This would fulfil the Article 48A duty to protect the environment and advance SDG 14 (Life below Water).