Contaminated Industrial Land: Who Pays for the Clean-Up?

In India the starting answer is simple: the person who caused the contamination pays, under the polluter pays principle that the Supreme Court and the NGT apply. In practice it is messier. If the polluter has sold the land, closed down or cannot be traced, the board or the NGT may turn to whoever now owns or occupies the site, leaving that person to recover the cost from the seller or former occupier under contract or through a claim. Where nobody responsible can be found, clean-up falls on the government, and usually happens slowly.

This guide is for anyone holding land with an industrial past: owners, buyers, lessees of plots in industrial estates, and the neighbours whose wells and fields sit downhill. It covers how liability is decided, what happens when the polluter has gone, how a site is assessed and cleaned up, what buyers and tenants should put in their contracts, and what residents can do. Our page on authorisation to handle hazardous waste covers the operating rules that, followed properly, prevent most contamination.

If you are about to buy or lease a site, read our guide on environmental due diligence before buying an industrial site first. It is far cheaper to ask these questions before the sale deed than after.

The essentials

Who pays to clean up land contaminated by a factory?

The polluter, first and foremost. Indian environmental law treats the cost of undoing pollution as part of the cost of the activity that caused it. In Indian Council for Enviro-Legal Action v Union of India (1996), chemical units that had left toxic sludge and poisoned wells around Bichhri village in Rajasthan were made to pay for the remediation, even though the damage had been done years earlier. In Vellore Citizens' Welfare Forum v Union of India (1996), the Supreme Court said the polluter pays principle covers both compensating victims and restoring the damaged environment. Section 20 of the NGT Act tells the tribunal to apply it.

So the first question in any contaminated-land dispute is factual: who put the contamination there, and when? A plot that housed an electroplating unit for fifteen years and then a warehouse for five has an obvious first candidate. A site that changed hands four times, with different processes each time, needs proper history before anyone can say who pays what share.

The polluter's liability does not end when it stops operating or sells. Liability under the Hazardous Waste Rules 2016 extends to damage caused by improper handling, and the NGT has repeatedly held polluters responsible for contamination that surfaced long after the activity ended. The harder problem is collecting from a polluter that has closed, been dissolved or simply disappeared.

Who usually ends up paying, case by case

These are tendencies, not fixed rules. The board and the NGT look at who caused the contamination, who controls the site now, and who can actually fund the work.

I bought the land later. Can I be made to clean it up?

Yes, you can be directed to act, even if you did not cause the contamination. Boards and the NGT deal with the site in front of them. If the polluter cannot be reached, the person who controls the land is the one who can give access, carry out the work and stop further spread, and orders are often addressed to that person. A new owner who keeps pumping a contaminated borewell or disturbs buried waste while building can also become a polluter in their own right.

That does not mean you carry the cost for good. If the seller hid what was in the ground, or gave warranties about the condition of the land, you may recover the cost from the seller through a civil claim. If the seller was the polluter, you can ask the board or the NGT to fix liability on it directly, and to treat you as the party carrying out the work rather than the party responsible for causing it.

Two things weaken a buyer's position badly: having known about the contamination and bought anyway at a discount without protection, and having done nothing once it came to light. In site purchases that Advocate B.K. Singh has advised on, the question he presses hardest is what the land was used for twenty years ago, not last year, because the warehouse on the plot today tells you nothing about the plating shop that stood there before it.

What the law says about contaminated sites

For years India had no single law on contaminated land. Clean-up was ordered under the general powers of boards (EP Act section 5, Water Act section 33A), the liability provision of the Hazardous Waste Rules 2016, and the NGT's power under section 15 to order restitution of the environment. The CPCB also published guidance on how contaminated sites should be assessed and remediated, and has worked with states to identify and clean up such sites.

In 2025 the Centre notified rules under the EP Act specifically on the management of contaminated sites. They set out how suspected sites are reported, assessed and declared, how remediation is planned and checked, and they place the cost on the person responsible, with public funding for sites where nobody can be found. The detail matters for any live case, so check the current text and any guidance issued under it before relying on a particular procedure.

The older tools have not gone away. A board can still issue directions, the NGT can still order restoration and compensation, and the Supreme Court's decisions on absolute liability, starting with M.C. Mehta v Union of India (the Oleum gas case, 1987), still apply to industries handling hazardous substances.

The factory closed years ago. Who pays now?

Start by finding out whether the polluter really has gone. Companies are often renamed, merged or kept alive as shells, and directors and group companies may still be reachable. The Registrar of Companies records, the old consent and authorisation files with the board (available through RTI) and the land records usually tell you who ran the unit and when. If a successor took over the business and its liabilities, the claim can follow it.

If the company has been dissolved with nothing left, the realistic options narrow. The current owner may be directed to secure the site, and public money may be used for the clean-up, under the 2025 rules or under state and central programmes. That process is slow, and sites can sit for years with only fencing and warning boards. Residents affected by such a site often have to push through the NGT to get it moving.

Where environmental compensation has already been collected from a polluter, the NGT has at times directed that the money be spent on restoring the damaged area. If you are near such a site, it is worth asking the board through RTI what compensation was recovered and how it was used.

What to do if you find contamination on land you own or occupy

Owner, buyer or tenant, this order keeps your position as strong as possible.

What remediation involves and why it costs so much

Remediation usually runs in stages: a desk study of the site's history, sampling to find what is in the soil and groundwater and how far it has spread, an assessment of the risk to people and water, a remediation plan, the clean-up work, and validation sampling to show the targets have been met. Groundwater may need monitoring for years afterwards.

The method depends on what is there. Contaminated soil may be dug out and sent to a TSDF as hazardous waste, treated on site, or contained under an engineered cap. Groundwater may be pumped and treated, or left to recover under monitoring if the source has been removed. Heavy metals such as chromium do not break down, so they are usually removed or locked away; some organic chemicals can be treated in place.

The cost is driven by volume and depth. Every tonne excavated has to travel with a manifest to an authorised facility and be paid for there, and deep groundwater plumes are slow and expensive to treat. That is why the share-out of liability matters so much, and why early assessment, before the contamination spreads further, is usually cheaper for everyone.

Protecting yourself when buying, selling or leasing a site

The cheapest protection is knowing before you sign. A buyer should get a site history covering every past occupier and process, the board's consent and authorisation files, inspection reports and notices, and, for any site with a heavy industrial past, soil and groundwater sampling. If the seller refuses access for sampling, treat that as information.

Then put the answer in the contract. Typical protections are warranties about past use and known contamination, an indemnity for pre-sale contamination with a survival period long enough to matter, a price adjustment or escrow to cover expected remediation, and conditions that the seller completes agreed clean-up before completion. Sellers, for their part, should disclose what they know; hiding contamination invites claims for misrepresentation later. Our guide on legacy contamination in business acquisitions covers share deals, where the liability travels with the company.

Leases need the same care. A landlord leasing to an industrial tenant should record the land's condition at the start, with baseline sampling, and require restoration at the end. Tenants should insist on the same baseline so they are not blamed for what was there before. Plots in state industrial estates usually come with lease terms on use and surrender, so read them before you give the plot back. Our page on environmental checks before you buy, lease or lend explains how we review a site.

An old factory has poisoned our wells. What can residents do?

Complain to the State Board in writing, asking it to sample the groundwater, identify the source and direct remediation, and ask the public health engineering department or jal board to arrange safe water. Get your own wells tested by an accredited laboratory, and keep the reports with any medical records. Our guide on proving groundwater contamination from industry explains what evidence links a plume to a source.

If the board does not act, or acts but nothing changes on the ground, the NGT can be approached. Under section 15 of the NGT Act, residents can claim relief and compensation and ask for restitution of the environment within five years of when the cause of action first arose. The tribunal typically sends a joint committee to sample and report, fixes the polluter, and orders remediation, safe drinking water and compensation. A residents' association or panchayat can apply on behalf of those affected under section 18.

Mistakes owners and buyers make with contaminated land

Documents that decide who pays

Related guides on hazardous waste and land

Contamination usually starts with waste handled badly. See how hazardous waste dumping is reported and dealt with, used oil and chemical sludge disposal rules and lead-acid battery recycling pollution, which is a common source of lead in soil. For the operating side, see hazardous waste manifest and transport rules.