Strict Liability — Jurisprudence Notes

Strict Liability

In 1868 a mill-owner named Fletcher built a reservoir on his land. Water burst through disused mine-shafts and flooded his neighbour Rylands’ coal mine. Rylands had done nothing careless — yet the House of Lords made him pay. Out of that flood came Rylands v Fletcher (1868): if you bring a dangerous thing onto your land and it escapes and does harm, you are liable even without any fault. That is strict liability — liability without proof of negligence.

The rule, its essentials and exceptions

Everyday hook: for most wrongs the law asks “were you careless?” Strict liability says, for certain specially dangerous activities, “we will not even ask — if your dangerous thing escapes and harms your neighbour, you pay.” Strict liability is liability imposed without proof of intention or negligence — “liability without fault”.

The rule in Rylands v Fletcher (1868): “A person who, for his own purposes, brings on his land and collects and keeps there anything likely to do mischief if it escapes, must keep it in at his peril, and if he does not do so, is prima facie answerable for all the damage which is the natural consequence of its escape.”

The essentials (all three must be present):

A dangerous thing (“anything likely to do mischief if it escapes”) — water, gas, electricity, explosives, fumes, sewage, a wild animal.
Escape — the thing must escape from the defendant’s land or control to a place outside it. Harm caused within the defendant’s own premises is not covered.
Non-natural use of land — the defendant must have put his land to a special, non-ordinary use that increased the danger (a large reservoir is non-natural; ordinary domestic water supply is natural). Some ordinary uses are exempt.

The exceptions (defences) — the rule does not apply where the escape was due to:

Plaintiff’s own fault — the damage flowed from the plaintiff’s own act or default.
Act of God (vis major) — an extraordinary natural event no human foresight could guard against.
Act of a stranger / third party — the escape was caused by the unforeseeable act of a stranger over whom the defendant had no control.
Consent of the plaintiff (volenti) — the plaintiff consented to the accumulation for common benefit.
Statutory authority — the accumulation was authorised by a statute.

Absolute liability — the Indian advance. In M.C. Mehta v Union of India (1987) (the Oleum Gas Leak case), the Supreme Court held that an enterprise engaged in a hazardous or inherently dangerous activity owes an absolute and non-delegable duty, and is liable for any harm from an escape with no exceptions at all — none of the Rylands defences apply. This “absolute liability” is stricter than strict liability, reflecting the demands of a modern industrial society.

Blackburn J. (Rylands v Fletcher, 1868): “The person who for his own purposes brings on his land and keeps there anything likely to do mischief if it escapes, must keep it in at his peril, and is answerable for all the damage which is the natural consequence of its escape.”

In Simple Terms: For certain dangerous activities the law drops the “were you careless?” question. Under Rylands v Fletcher (1868), if you bring a dangerous thing onto your land in a non-natural use and it escapes and harms another, you pay even without fault — subject to defences like act of God and act of a stranger. India’s M.C. Mehta rule goes further: for hazardous enterprises, liability is absolute, with no defences.

⚠️ DON’T CONFUSE — Strict liability vs Absolute liability

Strict liability (Rylands v Fletcher (1868)) is liability without fault but with exceptions — act of God, act of a stranger, plaintiff’s default, statutory authority and consent can all excuse the defendant. Absolute liability (M.C. Mehta, for hazardous enterprises) is liability without fault and without any exceptions — none of those defences apply. Do not list the Rylands defences when the question is about absolute liability.

🧩 WORKED EXAMPLE — Does strict liability apply?

Facts. A factory stores large tanks of toxic gas. A tank ruptures and gas escapes, injuring people in the neighbourhood. The factory pleads it took every precaution.

Rule. Strict liability (Rylands) needs a dangerous thing + escape + non-natural use; absolute liability (M.C. Mehta) applies to hazardous enterprises with no defences.

Apply. Toxic gas is a dangerous thing; it escaped; storing it in bulk is a non-natural use — so Rylands strict liability is made out, and “we took care” is no defence. Because this is a hazardous enterprise, the Indian rule makes the liability absolute — even act of God or a stranger would not excuse it.

Conclusion. The factory is liable irrespective of precautions — the whole point of liability without fault.

flowchart TD
    SL["STRICT LIABILITY<br/>liability without fault (Rylands v Fletcher)"]:::root
    SL --> E1["dangerous thing"]:::leaf
    SL --> E2["escape"]:::leaf
    SL --> E3["non-natural use of land"]:::leaf
    SL --> EX["Exceptions: act of God, act of stranger,<br/>plaintiff's fault, statutory authority, consent"]:::dec
    SL --> AB["Absolute liability (M.C. Mehta)<br/>hazardous enterprise — NO exceptions"]:::warn
    classDef root fill:#FFF8DC,stroke:#000,stroke-width:1px,color:#000;
    classDef leaf fill:#E6F3FF,stroke:#1E3A8A,color:#000;
    classDef dec fill:#FFE8C2,stroke:#B45309,color:#000;
    classDef warn fill:#FDE2E2,stroke:#B91C1C,color:#000;
    linkStyle default stroke:#888,stroke-width:1px;

Case Laws

Rylands v Fletcher (1868) — the foundation of strict liability: escape of a dangerous thing in non-natural use.
M.C. Mehta v Union of India (1987) — absolute liability of hazardous enterprises, no exceptions (Oleum Gas Leak).
Union Carbide Corporation v Union of India (1989) — the Bhopal Gas Leak; applied the principles of enterprise liability for a mass disaster.

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