Coastal Regulation Zone (CRZ) Notification — Environmental Law Notes

Coastal Regulation Zone (CRZ) Notification

In the 1990s a “Blue Revolution” swept India’s coasts: farmers dug their fields into ponds and pumped in seawater to raise export shrimp. The money was fast — but the salt ruined the soil and the drinking-water wells, mangroves were flattened, and villagers lost their beach access. In S. Jagannath vs Union of India (1997) the Supreme Court looked at this and ordered the shrimp farms on the coast demolished, holding that a fragile seashore cannot be sacrificed for quick profit. The instrument it enforced was the Coastal Regulation Zone Notification — the law that decides what may and may not be built beside the sea.

What is the Coastal Regulation Zone?

The Coastal Regulation Zone (CRZ) Notification was issued in 1991 by the Central Government under section 3 of the EPA (read with the EP Rules) — so it is a classic piece of the umbrella Act’s delegated legislation. It declares the sensitive strip of coast a regulated zone and controls what activities may take place there.

The zone it creates is, broadly, the land within 500 metres of the High Tide Line (HTL) along the sea, plus the area between the Low Tide Line (LTL) and the HTL (the intertidal zone), and a stretch along tidal creeks and rivers. Inside this zone, some activities are prohibited outright, and others are regulated (allowed only with clearance and conditions).

It exists because the coast is both fragile and priceless — mangroves, coral reefs, turtle-nesting beaches and fishing grounds — and because unregulated building, industry and aquaculture were destroying it. The Notification’s purpose, in the Supreme Court’s words, is “to protect the ecologically fragile coastal areas and to safeguard the aesthetic qualities and uses of the sea coast.”

A. The classification — CRZ-I to CRZ-IV

The Notification sorts the coast into four categories, and stating them is the heart of the essay.

CRZ-I — the most sensitive. Ecologically sensitive areas (mangroves, coral reefs, national parks, sanctuaries, turtle-nesting grounds) and the intertidal area between the LTL and HTL. No new construction is allowed here (only a few essential, coast-dependent activities).
CRZ-II — already developed. Areas that are already built up close to the shoreline, within municipal limits or existing towns. Construction is allowed but only on the landward side of existing roads/structures, subject to conditions.
CRZ-III — relatively undisturbed. Rural and other areas that are not substantially built up. Here a “No Development Zone” (NDZ) is kept — no new construction close to the HTL — while normal activities (farming, repairs to existing dwellings) continue behind it.
CRZ-IV — the water area / islands. Originally the coastal stretches of islands (Andaman & Nicobar, Lakshadweep) and, in the later notifications, the water area of the sea and tidal water bodies, where fishing and traditional coastal-community uses are regulated.

B. Prohibited and regulated activities

Within the CRZ, the Notification prohibits activities such as: setting up new industries and expanding existing ones (except those directly needing the waterfront), handling or storing hazardous substances, discharging untreated waste and effluent, reclaiming land and mining sand, and dumping waste. Activities that genuinely need the foreshore — ports, harbours, certain fisheries facilities — may be regulated rather than banned, with clearance from the coastal authority.

The administration works through a Coastal Zone Management Plan (CZMP), prepared by each State Government and approved by the Ministry, which maps the coast into the four zones so everyone knows which rule applies where.

⚠️ CAUTION — do not treat shrimp aquaculture as a “legitimate coastal industry”

The exam problem is designed to tempt you: shrimp farming looks like an ordinary coastal agri-business that belongs by the sea. It is not. An industry escapes the CRZ ban only if it genuinely needs the foreshore; shrimp aquaculture does not, because brackish water can be piped inland. In S. Jagannath the Court held that setting up modern shrimp farms on the coast is per se hazardous and prohibited within the CRZ. Do not advise that the farm is a lawful coastal use — advise that it is barred/regulated.

🧩 WORKED EXAMPLE — the shrimp-farm problem

Facts. An industry runs intensive shrimp culture in a coastal area. It turns the soil and drinking-water saline, harms local flora and fauna and destroys mangroves. Affected residents seek remedies.

Rule. The CRZ Notification 1991 (under EPA s. 3) prohibits new industry and hazardous activity within 500 m of the HTL; an industry is exempt only if it truly needs the foreshore. In S. Jagannath vs Union of India (1997) the Court held modern shrimp aquaculture in the CRZ per se hazardous, ordered such farms demolished, and applied the precautionary and polluter-pays principles.

Apply. Shrimp farming does not need the foreshore (brackish water can be piped), so it enjoys no exemption; sited in the CRZ it is prohibited. The salination and mangrove loss trigger the precautionary principle, and the polluter must pay the villagers’ losses and the cost of restoring the coast. The farm can be ordered closed/demolished and an authority under EPA s. 3(3) set up to police the coast.

Conclusion. The winning answer is that the aquaculture is barred by the CRZ Notification and S. Jagannath — not a lawful coastal industry — and the remedy is closure plus compensation and restoration under polluter-pays.

flowchart TD
    ROOT["CRZ Notification 1991<br/>(under EPA s.3)"]:::root
    ROOT --> Z["Zone: within 500 m of<br/>High Tide Line + intertidal"]:::leaf
    ROOT --> C["Classification"]:::leaf
    C --> C1["CRZ-I: sensitive + intertidal<br/>no new construction"]:::leaf
    C --> C2["CRZ-II: developed urban<br/>build landward only"]:::leaf
    C --> C3["CRZ-III: rural<br/>No Development Zone kept"]:::leaf
    C --> C4["CRZ-IV: islands / water area"]:::leaf
    ROOT --> B["Prohibited: new industry,<br/>hazardous storage, effluent,<br/>reclamation, shrimp farms"]:::diamond
    classDef root fill:#FFF8DC,stroke:#000,stroke-width:1px,color:#000;
    classDef leaf fill:#E6F3FF,stroke:#1E3A8A,color:#000;
    classDef diamond fill:#FDECEA,stroke:#B22222,color:#000;
    linkStyle default stroke:#888,stroke-width:1px;

Case Laws

S. Jagannath vs Union of India (1997) — the shrimp-culture case; modern coastal aquaculture is per se hazardous and prohibited within the CRZ; the Court ordered such farms demolished, held the CRZ Notification (under the EPA) overriding over State law, and applied the precautionary and polluter-pays principles.
Indian Council for Enviro-Legal Action vs Union of India (1996) — directed the enforcement of the CRZ Notification and the protection of coastal stretches from industrial degradation.
Vellore Citizens Welfare Forum vs Union of India (1996) — the source of the precautionary and polluter-pays principles the Court applied to coastal aquaculture.

Note: the 1991 Notification has since been revised by the CRZ Notification 2011 and 2019, which refine the zones and clearances, but the classic 1991 framework and S. Jagannath remain the exam’s core.

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