Section 16 explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Section 16 sets out what the Central Pollution Control Board is for. Its "main function" is to promote cleanliness of streams and wells in different areas of the States. Around that, section 16(2) lists what it may do, from advising the Central Government and co-ordinating State Boards to laying down standards for a stream or well, and section 16(3) lets it run laboratories.
This article is current as amended up to the Water (Prevention and Control of Pollution) Amendment Act, 2024 (this section was not changed by it). Later amendments and notifications should be checked. If you need to understand how Board functions bear on your plant, see our compliance advisory service.
The Central Board's main function is to promote cleanliness of streams and wells in different areas of the States. It may advise the Central Government, co-ordinate and resolve disputes among State Boards, give technical help, carry out research, train people, run mass media programmes, publish data and manuals, lay down, modify or annul standards for a stream or well in consultation with the State Government, and plan a nation-wide programme. It may establish or recognise laboratories.
Section 16(1): the main function
"Subject to the provisions of this Act, the main function of the Central Board shall be to promote cleanliness of streams and wells in different areas of the States." The word "States" is used here; for Union territories the Central Board also acts as the State Board, as explained in sections 3 and 4.
Section 16(2): the listed functions
Section 16(2) is "without prejudice to the generality" of the main function, and the Board "may perform all or any" of the functions listed. The word is "may". The list describes the Board's role without making every item a duty to act in a given case.
| Clause | Function |
|---|---|
| (a) | Advise the Central Government on any matter concerning the prevention and control of water pollution |
| (b) | Co-ordinate the activities of the State Boards and resolve disputes among them |
| (c) | Provide technical assistance and guidance to State Boards; carry out and sponsor investigations and research on water pollution problems and prevention, control or abatement |
| (d) | Plan and organise training of persons engaged or to be engaged in pollution control programmes, on terms the Central Board specifies |
| (e) | Organise through mass media a comprehensive programme on prevention and control of water pollution |
| (ee) | Perform such functions of any State Board as are specified in an order made under section 18(2) |
| (f) | Collect, compile and publish technical and statistical data on water pollution and measures devised for its prevention and control; prepare manuals, codes or guides on treatment and disposal of sewage and trade effluents; and disseminate information |
| (g) | Lay down, modify or annul, in consultation with the State Government concerned, the standards for a stream or well |
| (h) | Plan and cause to be executed a nation-wide programme for the prevention, control or abatement of water pollution |
| (i) | Perform such other functions as may be prescribed |
Clause (g): standards for a stream or well
Clause (g) is the one with direct effect on industry. The Central Board can set the standard for the water body itself, not only for what is discharged into it. The proviso says "different standards may be laid down for the same stream or well or for different streams or wells, having regard to the quality of water, flow characteristics of the stream or well and the nature of the use of the water in such stream or well or streams or wells". A river used for drinking may therefore carry a stricter standard than one used only for industrial purposes, and different stretches of one river may carry different standards.
The State Board has a parallel power for effluent standards and for the quality of receiving waters that are not inter-State streams; see section 17. The Central Board's power under clause (g) is exercised "in consultation with the State Government concerned".
Clause (b): co-ordination and disputes
The Central Board may "co-ordinate the activities of the State Boards and resolve disputes among them". This is the route for disputes between Boards of different States, for example on a river that crosses a State boundary.
Clause (ee): when the Central Board steps in
Clause (ee) links to section 18(2). Where the Central Government finds that a State Board defaulted in complying with directions of the Central Board, and a grave emergency has arisen, it may by order direct the Central Board to perform specified functions of the State Board for a specified area and period. Clause (ee) lets the Central Board perform them. See sections 17 and 18.
Clause (f): data, manuals, codes and guides
The Central Board collects and publishes technical and statistical data and prepares manuals, codes or guides on treatment and disposal of sewage and trade effluents. A plant manager looking for guidance on treatment systems may find it there. The Act says nothing about the binding force of a manual, code or guide; their status depends on the notification or rule that adopts them.
Section 16(3): laboratories
"The Board may establish or recognise a laboratory or laboratories to enable the Board to perform its functions under this section efficiently including the analysis of samples of water from any stream or well or of samples of any sewage or trade effluents."
Laboratories established or recognised by the Central Board have a role in sampling. Under the sampling section, a sample taken in a Union territory goes to the laboratory established or recognised by the Central Board under section 16. See sections 21 to 23.
How section 16 compares with the Air Act
The Central Board's functions under the Air Act are set out in a parallel section of that Act. See sections 16 to 18 of the Air Act.
What this means for a regulated business
- Standards can come from two directions. A stream standard from the Central Board and effluent standards from the State Board. Your discharge must be compatible with both.
- Disputes between Boards are not yours to resolve, but they can delay a decision. Section 16(2)(b) is the mechanism.
- Published manuals, codes and guides are useful in preparing consent applications, though their binding effect depends on how they are adopted.
An example
Chenab Distillers Private Limited plans a new unit beside a river that is used downstream for drinking water. The compliance head finds that the stream carries a standard laid down for its quality and use, as section 16(2)(g) permits. The company therefore designs its effluent treatment for a discharge that will not take the receiving water beyond that standard, and confirms the effluent standards the State Board has laid down. It also collects the relevant manuals and guides the Central Board has published on treatment.
Need help with Board standards and your plant?
A discharge that meets the State Board's effluent standard may still raise questions if the receiving stream has a stricter standard. Our compliance advisory team can help you identify the standards that apply to your outlet and prepare your treatment plan and consent papers accordingly.
Key takeaways
- The Central Board's main function is to promote cleanliness of streams and wells in different areas of the States.
- It may advise, co-ordinate State Boards, resolve their disputes, research, train, publish data, manuals, codes and guides, and run a nation-wide programme.
- It may lay down, modify or annul standards for a stream or well, in consultation with the State Government, and different standards may apply to different streams.
- It may perform State Board functions when a section 18(2) order says so.
- It may establish or recognise laboratories.
Read next
- Sections 17 and 18: functions of the State Board and directions
- Sections 21 to 23: samples, reports and entry
- Sections 16 to 18 of the Air Act: functions of the Boards
- Sections 13 to 15: Joint Boards
Disclaimer: Based on the Environment (Protection) Act, 1986, the Air (Prevention and Control of Pollution) Act, 1981 and the Public Liability Insurance Act, 1991 as amended by the Jan Vishwas (Amendment of Provisions) Act, 2023 (in force for these Acts from 1 April 2024), the Water (Prevention and Control of Pollution) Act, 1974 as amended by its Amendment Act of 2024 (which applies only in the States and Union territories it names and in States that adopt it), and the National Green Tribunal Act, 2010 as amended by the Tribunals Reforms Act, 2021, as consulted on 3 October 2026. Later amendments, rules and notifications should be checked. This article is general information, not legal advice; check the official text before acting.