Section21
The Air (Prevention and Control of Pollution) Act, 1981

Restrictions on use of certain industrial plants

In force From 16 May 1981 Act 14 of 1981 As on 15 Oct 2026

Act 14 of 1981 Ministry Environment, Forest and Climate Change Enacted 29 Mar 1981 In force 16 May 1981 Cited by 3 provisions Instruments 13

Section 21 of the Air (Prevention and Control of Pollution) Act, 1981 deals with restrictions on use of certain industrial plants. No person shall establish or operate any industrial plant in an air pollution control area unless the previous consent of the State Board has been obtained in pursuance of an application made by such person in accordance with the provisions of this section: Provided that the Central Government may i The Act came into force on 16 May 1981.

1 [(1) No person shall establish or operate any industrial plant in an air pollution control area unless the previous consent of the State Board has been obtained in pursuance of an application made by such person in accordance with the provisions of this section:

Provided that the Central Government may in consultation with the Central Pollution Control Board, by notification in the Official Gazette, exempt certain categories of industrial plants from the application of the provisions of this sub-section..]

(2) An application for consent of the State Board under sub-section (1) shall be accompanied by such fees as may be prescribed and shall be made in the prescribed form and shall contain the particulars of the industrial plant and such other particulars as may be prescribed:

Provided that where any person, immediately before the declaration of any area as an air pollution control area, operates in such area any industrial plant, 2***such person shall make the application under this sub-section within such period (being not less than three months from the date of such declaration) as may be prescribed and where such person makes such application, he shall be deemed to be operating such industrial plant with the consent of the State Board until the consent applied for has been refused.

(3) The State Board may make such inquiry as it may deem fit in respect of the application for consent referred to in sub-section (1) and in making any such inquiry, shall follow such procedure as may be prescribed.

(4) Within a period of four months after the receipt of the application for consent referred to in sub-section (1), the State Board shall, by order in writing, 3 [and for reasons to be recorded in the order, grant the consent applied for subject to such conditions and for such period as may be specified in the order, or refuse such consent]:

4 [Provided that it shall be open to the State Board to cancel such consent before the expiry of the period for which it is granted or refuse further consent after such expiry if the conditions subject to which such consent has been granted are not fulfilled:

Provided further that before cancelling a consent or refusing a further consent under the first provision, a reasonable opportunity of being heard shall be given to the person concerned.]

(5) Every person to whom consent has been granted by the State Board under sub-section (4), shall comply with the following conditions, namely:--

(i) the control equipment of such specifications as the State Board may approve in this behalf shall be installed and operated in the premises where the industry is carried on or proposed to be carried on;

(ii) the existing control equipment, if any, shall be altered or replaced in accordance with the directions of the State Board;

(iii) the control equipment referred to in clause (i) or clause (ii) shall be kept at all times in good running condition;

(iv) chimney, wherever necessary, of such specifications as the State Board may approve in this behalf shall be erected or re-erected in such premises; and

(v) such other conditions as the State Board, may specify in this behalf; and

(vi) the conditions referred to in clauses (i), (ii) and (iv) shall be complied with within such period as the State Board may specify in this behalf:

Provided that in the case of a person operating any industrial plant5*** in an air pollution control area immediately before the date of declaration of such area as an air pollution control area, the period so specified shall not be less than six months:

Provided further that--

(a) after the installation of any control equipment in accordance with the specifications under clause (i), or

(b) after the alteration or replacement of any control equipment in accordance with the directions of the State Board under clause (ii), or

(c) after the erection or re-erection of any chimney under clause (iv),

no control equipment or chimney shall be altered or replaced or, as the case may be, erected or re-erected except with the previous approval of the State Board.

(6) If due to any technological improvement or otherwise the State Board is of opinion that all or any of the conditions referred to in sub-section (5) require or requires variation (including the change of any control equipment, either in whole or in part), the State Board shall, after giving the person to whom consent has been granted an opportunity of being heard, vary all or any of such conditions and thereupon such person shall be bound to comply with the conditions as so varied.

(7) Where a person to whom consent has been granted by the State Board under sub-section (4) transfers his interest in the industry to any other person, such consent shall be deemed to have been granted to such other person and he shall be bound to comply with all the conditions subject to which it was granted as if the consent was granted to him originally.

Section 21, The Air (Prevention and Control of Pollution) Act, 1981 (Act 14 of 1981).

Cross-references

Extracted from the operative text of the enactments themselves. Every destination below exists in our corpus.

Related judgements & precedents

These are some judgments that construed this section, and hold precedence value. They hold authority on how to read, interpret and use this section.

  1. M/s Indian Oil Corporation Limited vs V.B.R. Menon

    Supreme Court of India 14 Mar 2023 Binding (Supreme Court) with Significant Precedential Value Reportable

    Court's Decision & Legal Precedent

    The National Green Tribunal has the jurisdiction and power to direct the Central Pollution Control Board and State Pollution Control Boards to exercise their powers under Section 5 of the Environment (Protection) Act, 1986 for environmental protection. However, such directions must be reasonable, proportionate to the environmental objective, and not legislative in nature. When comprehensive guidelines addressing environmental concerns are already in place and operational, the NGT cannot impose additional mandatory approval mechanisms (such as Consent to Establish and Consent to Operate) as a supervisory measure, as this would be disproportionate and cause unnecessary hardship. Instead, the appropriate remedy is strict adherence to existing guidelines combined with enforcement action against violators. The exercise of NGT's wide discretionary powers under Rule 24 of NGT Rules must respect the deliberative decisions of regulatory authorities such as CPCB's industrial classification scheme and balance environmental protection with practical feasibility.

    On this section: Section 21 restricts establishment and operation of industrial plants in air pollution control areas without prior consent of the Pollution Control Board. Court analyzed that this section contemplates two types of consent: for establishment and for operation, supporting the concept of CTE and CTO.

    Read the full order on eCourts India

  2. Karnataka State Pollution Control Board v. Sandeep R. Rane

    High Court 07 Jan 2021 Persuasive (High Court) Reportable Crl.A. No. 100158/2014 (Karnataka)

    Court's Decision & Legal Precedent

    Final Order order-1.pdf 2021-01-07. Body dated 07th January 2021 matching the index; auto DATE-CHECK cites 2014-03-29 which is the trial-court acquittal date inside the named merits (Ghisalal/Thwaha/Eera FP — DATE-CHECK VERIFY, not skip). Ravi V. Hosmani J. Common judgment in 10 Crl.As (iron-ore stack yards). Isolate: Air Act s.21 consent-to-operate an industrial plant in a control area, and s.22 emission in excess of Board standards — s.2(k) industrial plant requires emitting an air pollutant, so a s.21 prosecution still needs proof of polluting activity; s.22 requires Board-laid standards plus samples/lab reports. Appeal against acquittal dismissed. Leading HC. Distinctive (Sandeep R. Rane, iron-ore). NEW act. Map 21 and 22 only — do not pad 37 punishment from recital.

    On this section: Air Act s.21 consent-to-operate an industrial plant in a control area still requires proof that the plant is an s.2(k) industrial plant emitting air pollutant (KSPCB v. Sandeep R. Rane).

    Read the full order on eCourts India

The holding above is the ratio decidendi as extracted from the judgment by eCourts India, reproduced unaltered — it is a rendering of the court's reasoning, not a substitute for its words. Read the order itself before relying on it.

Judgments citing this section

These may be obiter dicta or a precedent, for you to study. These are the judgments where this section is quoted.

  1. High Court 11 Aug 2022 KLHC010360932022

    … The petitioner states that the State Pollution Control Board can function and exercise its powers based on the directions issued by the Central Government alone. The restrictions on the use of certain industrial plants are specified in Section 21 of the Air (Prevention and Control of Pollution) Act, 1981. As per Section 2(k) of the Act, industrial plant means any plant used for any industrial or trade purposes and emitting any air pollutant into the atmosphere. Air pollutant is : 4 : any solid, liquid or gaseous substance (including noise) present in …

    Read this order on eCourtsIndia

  2. High Court 16 Mar 2021 KLHC010086062021

    … As per Exhibit P1 dated 26.8.2019, the Kerala State Pollution Control Board has issued consent to establish the quarry under section 25 of the Water (Prevention and Control of Pollution) Act, 1974 and section 21 of the Air (Prevention and Control of Pollution) Act, 1981, which is valid till 31.5.2024. On the basis of application submitted by the appellant, Exhibit P3 letter of intent has been issued by the Director of Mining and Geology. Likewise applications were submitted before the Geologist for approval of the mining …

    Read this order on eCourtsIndia

  3. High Court 16 Mar 2021 KLHC010088712021

    … As per Exhibit P1 dated 26.8.2019, the Kerala State Pollution Control Board has issued consent to establish the quarry under section 25 of the Water (Prevention and Control of Pollution) Act, 1974 and section 21 of the Air (Prevention and Control of Pollution) Act, 1981, which is valid till 31.5.2024. On the basis of application submitted by the appellant, Exhibit P3 letter of intent has been issued by the Director of Mining and Geology. Likewise applications were submitted before the Geologist for approval of the mining …

    Read this order on eCourtsIndia

Made under this section, and citing it

1 instrument states that it was made under this provision — the power to make it comes from here, so a change to any of them changes what this section requires in practice. Newest first.

Another 12 instruments name this provision in its title or its text without being made under it.

All subordinate legislation

Questions about Section 21

What have the courts held on Section 21 of the Air (Prevention and Control of Pollution) Act?

M/s Indian Oil Corporation Limited vs V.B.R. Menon (14 Mar 2023) is the leading judgment on this section among those set out below: Section 21 restricts establishment and operation of industrial plants in air pollution control areas without prior consent of the Pollution Control Board. Court analyzed that this section contemplates two types of consent: for establishment and for operation, supporting the concept of CTE and CTO. Another 1 judgment on this section is set out below, 1 of them from the Supreme Court. They run from 2021 to 2023.

How do I find court cases under Section 21 of the Air (Prevention and Control of Pollution) Act?

In judgments and charge sheets this section is written several ways, and each form finds a different set of orders. These search the full text of every order eCourtsIndia holds, best matches first: Air (Prevention and Control of Pollution) Act 21, section 21 Air (Prevention and Control of Pollution) Act, section 21 of the Air (Prevention and Control of Pollution) Act. Each opens the full list of orders on eCourtsIndia, where it can be narrowed by court, year and outcome. 2 reported judgments on this section are set out on this page, beginning with M/s Indian Oil Corporation Limited vs V.B.R. Menon (14 Mar 2023).

What should I read with Section 21 of the Air (Prevention and Control of Pollution) Act, and has it changed?

3 other provisions in this corpus refer back to it. The rules and notifications made under it are where it actually bites, and there is one: most recently G.S.R. 512(E).amendments in the notification of the Government of India, Ministry of Environment, Forest and Climate Change published in the gazette of India, Extraordinary, Part II, Section 3, Sub-section (i), vide number G.S.R 702 (E), dated 12th November, 2024 (2025).

When did Section 21 of the Air (Prevention and Control of Pollution) Act come into force?

Section 21 of the Air (Prevention and Control of Pollution) Act, cited as Air (Prevention and Control of Pollution) Act 21, came into force on 16 May 1981, having been enacted on 29 Mar 1981. It is in force as at the date shown on this page.

Other sections of this Act

Source and method. Compiled from the enactments of Parliament and of the State legislatures as published on India Code, and republished together with commentary and other original matter under section 52(1)(q)(ii) of the Copyright Act, 1957. Structured, cross-referenced and maintained by eCourtsIndia. Text as in force on 15 Oct 2026. This page is not a substitute for legal advice.