Factory Smoke Near Your Home: How to Complain Effectively

Complain in writing to the State Pollution Control Board's regional office (the DPCC in Delhi), name the factory and the exact chimney, say when the smoke comes, attach dated photos and a log, and ask for an unannounced inspection with stack monitoring. Keep the diary number. That single, specific complaint does more than a dozen phone calls. If the board does nothing after a written reminder, you can approach the SDM for a public nuisance order and, if the problem is serious, the National Green Tribunal.

Most people who write to us about factory smoke have already complained. The trouble is how: a call to a helpline, a post on social media, a letter that says 'pollution is very high in our area'. This guide is about turning that frustration into a complaint an inspecting officer cannot brush aside, and about what to do when the first complaint is ignored.

For the wider picture of factory emissions, odour and dust, and what we do for residents and industries, see our page on factory air pollution, smoke and stack emissions. If the smell is a bigger problem than the smoke, read industrial odour complaints instead.

The essentials

Where do I complain about factory smoke near my house?

Start with the State Pollution Control Board, at the regional office that covers your area. In Delhi that is the Delhi Pollution Control Committee; in Ghaziabad or Noida it is UPPCB; in Gurugram or Faridabad it is HSPCB. The board is the authority that gave the factory its consent to operate, so it is also the authority that can inspect, sample the chimney, and order the unit to fix the problem or shut.

Most boards accept complaints online, and that is fine as an extra channel. But for a factory that has been smoking for months, deliver a signed copy at the regional office as well and get a receiving stamp or diary number on your copy. Online acknowledgements disappear into systems; a stamped copy goes into your file and, later, into an NGT application.

Two other offices deserve a copy from day one. The SDM can deal with a public nuisance under section 152 of the Bharatiya Nagarik Suraksha Sanhita 2023, and the municipal body or development authority matters if the factory sits in a residential zone. If the smoke comes from burning waste in the yard, the local police station should also know, because open burning is prohibited.

What should a factory smoke complaint say?

It should say exactly what an inspecting officer needs to act, and nothing that gives the unit an easy answer. That means the name of the factory if you know it, the plot or khasra number, and the location of the chimney, vent or yard that is the problem. It means the timings, because a unit that smokes from 11 pm to 4 am will look perfect at 11 am. And it means the effect on you: soot on terraces, coughing children, a school or hospital nearby.

Keep the tone flat and factual. Words like 'mafia' and 'poisoning the whole city' make the letter easier to dismiss, not harder. Avoid guessing at the chemistry. You do not need to say the factory is burning tyres; say the smoke is thick and black and smells of burning rubber, and let the officer find out why.

Advocate B.K. Singh's usual advice to RWAs is to end every complaint with one clear request that the board can be held to later, such as: 'Please carry out an unannounced inspection between 11 pm and 3 am, including stack monitoring and verification of the fuel in use, and send us a copy of the inspection report.' A specific request turns silence into provable inaction, which is exactly what the NGT looks at if the matter goes that far.

The parts of a smoke complaint that gets action

How do I prove the smoke is coming from that factory?

Show the chimney and the factory in the same frame. A photo of a grey sky proves nothing; a photo from your terrace that shows the smoke leaving a particular stack, with the factory's shed or water tank visible, proves a lot. Short videos of 20 to 30 seconds work better than still images because they show the plume moving and the density of the smoke.

Make the date and time visible. Turn on the date and location stamp in your phone camera, and keep the original files, not the compressed copies sent on WhatsApp, because the original carries the metadata. Note the wind direction in your log; if the smoke is worst in your lane when the wind blows from the factory, that is common sense evidence any inspector understands.

Collect the physical traces. Wipe soot from a white cloth on your terrace after a bad night and photograph it next to a dated newspaper. Keep the doctors' slips if children or elderly members are being treated for coughing or wheezing, and note when the treatment started compared with when the smoke began. None of this is laboratory proof, and it does not need to be. Its job is to get the laboratory proof collected: the board's stack sample.

What to collect before you complain

How to file a factory smoke complaint, from first letter to escalation

Can a factory run in a residential area at all?

Usually not, at least not a polluting one. Master plans and zoning regulations in most cities restrict industry in residential zones to a narrow list of non-polluting household or service activities, and boards generally do not grant consent to red or orange category units in residential areas. A smoking chimney in a residential colony is therefore often both a pollution problem and a land-use problem.

That changes your complaint. Ask the board whether the unit has consent at all, and ask the municipal body or development authority whether it is allowed in that zone. In Delhi, for example, the land-use question goes to the municipal corporation and the pollution question to the DPCC; units in non-conforming areas have been sealed on that basis. Our page on matters before the DPCC explains how that office works.

If the factory is inside a notified industrial area and you live next to its boundary, the unit is in the right place, and your complaint must focus on standards: is the chimney tall enough, is the control equipment running, is the fuel approved? That is a harder complaint, but a stack sample that fails is just as unlawful in an industrial estate as anywhere else.

When to move to the next step

What if the pollution board does not act on my complaint?

Then you have three legal options, and you can use more than one. The first is the National Green Tribunal. Where the board has failed to enforce the Air Act against a unit that is clearly polluting, an application under section 14 of the NGT Act asks the tribunal to step in. The NGT typically directs a joint committee, often the CPCB, the State Board and the District Magistrate, to inspect and report, and then passes orders on that report. Our guide on NGT cases against authorities that will not act covers this in detail.

The second is a complaint in court under section 43 of the Air Act. A citizen can file it after giving the board at least 60 days' notice of the offence and of the intention to complain. After the Jan Vishwas Act 2023 many violations now carry monetary penalties decided by an adjudicating officer rather than prosecution, so check what the current provision allows before choosing this route. The third is the SDM's public nuisance jurisdiction, which does not depend on the board at all.

Do watch the clock. A fresh NGT application must be filed within six months of when the cause of action first arose, with up to 60 more days for sufficient cause. Smoke that continues every night supports a continuing cause of action, but you should not rely on that alone. Our note on whether it is too late to go to the NGT explains the time limit.

Before you send the complaint

Mistakes residents make, and what not to do

The commonest mistake is complaining everywhere except in writing to the board. A helpline call or a tweet may get a quick visit, but it rarely gets a stack sample, and it leaves nothing to show later. The second is the general complaint about the area. If there are ten units nearby, the board will send a general reply. Pick the worst source and complain about that one.

People also undermine themselves by exaggerating. A complaint that claims 'cancer cases in every house' without any record invites a dismissive report. Say what you can show. And do not trespass into the factory to film or take samples; you could face a police complaint, and evidence gathered that way can become the story instead of the smoke.

On anonymity: some boards will look at an unsigned complaint, but it carries little weight and cannot be followed up properly. If you fear trouble with the factory owner, complain as a group through the RWA or panchayat, and report any threat to the police in writing at once. Do not confront the workers at the gate; they are rarely the decision makers.

Related guides

If the chimney belongs to a boiler or furnace, our guide to boiler and furnace emission rules explains what the factory is supposed to have in place, which helps you ask the right questions. For what the air quality numbers in news reports mean, read PM10 and PM2.5 air quality standards.

If the smoke is from waste burnt in the open rather than a chimney, see garbage burning complaints. For help drafting the complaint itself, see our page on pollution complaints, and if the matter is heading to the tribunal, whether the NGT can hear your case.