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Bridging India’s Wastewater Treatment Gap: How C‑Tech Supports Municipalities

India’s rapid urbanisation has led to a wastewater management crisis. Urban India generates an estimated 72,368 million litres of sewage every day (Niti Aayog),  yet only about 28 percent of it is treated. The remainder often flows untreated into rivers, lakes and groundwater reserves, posing severe health and environmental risks. This gap between generation and treatment capacity undermines efforts to ensure safe water, sanitation and hygiene in cities.

Understanding the Gap

Several factors contribute to India’s wastewater treatment shortfall:

  1. Infrastructure deficits – Many cities lack sufficient sewage networks and sewage treatment plants. Upgrading them requires substantial investment and land.
  2. Population growth & urban sprawl – As urban populations expand, so does the volume of sewage wastewater. Legacy systems struggle to cope with fluctuating loads.
  3. High operational costs – Conventional plants consume large amounts of energy for aeration and pumping, leading to high electricity bills.
  4. Limited automation & monitoring – Manual control makes it difficult to optimise processes and maintain consistent effluent quality.

Enter C‑Tech – A Next‑Generation Solution

SFC developed C‑Tech, a proprietary SBR‑based system that treats sewage and industrial effluents in a single step. The technology integrates primary, secondary processes into one cyclic operation, producing recyclable water with a low life‑cycle cost. Unlike conventional multi-tank systems, C-Tech uses a single basin to fill, aerate, settle, and decant. This compact design saves land and simplifies construction.

Key advantages of C‑Tech for municipalities include:

  • Outstanding performance – C‑Tech achieves about 98 % treatment efficiency, drastically reducing BOD, COD, suspended solids, and nutrients. The resulting effluent meets stringent discharge as per NGT norms and is suitable for reuse.
  • Load flexibility – Sequencing batch operation adapts to variable flows and shock loads common in Indian cities.
  • Power savings – Optimised aeration and control systems minimise energy use, lowering operating costs.
  • Full automation – Programmable logic controllers (PLC) and SCADA automation reduce human intervention, ensuring consistent performance.
  • Substantial land saving – The compact footprint requires far less land than conventional plants

C‑Tech’s design and automation are delivered as a complete package – from process engineering and equipment supply (decanters, diffuser system, turbo blowers and fibre disc filters, PLC etc) to installation. These features make it particularly attractive for space‑constrained urban areas and municipal corporations seeking high performance without escalating costs.

Scaling Impact Across India

SFC has implemented more than 600 C‑Tech projects around the world and holds an impressive 1500 MLD cumulative capacity. demonstrating scalability from small towns to megacities. For municipalities, this track record provides confidence that C‑Tech can be deployed rapidly and reliably. It also means that cities can adopt modular expansions as populations grow, avoiding over‑investment in oversized plants.

Policy Alignment & Public–Private Collaboration

Government programmes are creating a supportive environment for advanced wastewater treatment solutions. Initiatives such as the Atal Mission for Rejuvenation and Urban Transformation (AMRUT), Swachh Bharat Mission (Urban) and Jal Jeevan Mission fund sewage infrastructure and emphasise reuse of treated water. The Namami Gange Programme targets zero discharge of untreated sewage into the Ganga basin, while National Green Tribunal orders mandate reuse and strict compliance. By pairing these programmes with efficient technologies like C‑Tech, municipalities can maximise funding impacts.

Public–Private Partnerships (PPPs) have also proven effective.Technology providers such as SFC Environmental Technologies focus on designing and installing advanced treatment technologies, ensuring efficiency and reliability. Such models relieve municipal agencies of upfront capital costs and transfer operations to experienced O&M firms.

Bridging the Gap – The Way Forward

Closing India’s wastewater treatment gap requires both systemic reforms and innovative technologies. C‑Tech addresses many of the barriers that have historically hampered wastewater projects: limited space, high energy consumption, variable loads and inconsistent quality. Its high efficiency and automation make it ideal for municipalities seeking to expand capacity without increasing their carbon footprint.

By investing in modern technologies, encouraging the reuse of treated water and fostering PPPs, India can transform sewage from an environmental liability into a valuable resource. SFC stands ready to support municipalities on this journey, demonstrating that bridging the gap is not just necessary – it is feasible, scalable and sustainable.

DISCLAIMER – IMPORTANT

THESE MATERIALS ARE NOT DIRECTED AT OR INTENDED TO BE ACCESSED BY PERSONS LOCATED OUTSIDE INDIA. THESE MATERIALS ARE BEING MADE AVAILABLE ON THIS WEBSITE TO COMPLY WITH THE SECURITIES AND EXCHANGE BOARD OF INDIA (ISSUE OF CAPITAL AND DISCLOSURE REQUIREMENTS) REGULATIONS, 2018, AS AMENDED.

IMPORTANT: You must read and agree with the terms and conditions of the following disclaimer before continuing.

The following disclaimer applies to the draft red herring prospectus of SFC Environmental Technologies Limited (the “Company”) dated August 25, 2025 (the “DRHP”) filed with the Securities and Exchange Board of India (“SEBI”) and BSE Limited and National Stock Exchange of India Limited (“Stock Exchanges”) and hosted on this website in connection with the initial public offering of the equity shares of the Company (the “Offer”). You are advised to read the following notice carefully before accessing or making any other use of the DRHP. By accessing the DRHP, you agree to be bound by the following terms and conditions, including any modifications to them from time to time.

The DRHP is directed at, and is intended for distribution to, and use by, residents of India only. The information in this portion of our website, including the DRHP, is not for publication or distribution, directly or indirectly, in or into the United States. No part of the contents of the DRHP shall be copied or duplicated in any form by any means or redistributed.

The DRHP has been hosted on this website as prescribed under Regulation 26(4) of the Securities and Exchange Board of India (Issue of Capital and Disclosure Requirements) Regulations, 2018, as amended (the “SEBI ICDR Regulations”). You are reminded that documents transmitted in electronic form may be altered or changed during the process of transmission and consequently, neither the Company nor any of its affiliates accepts any liability or responsibility whatsoever in respect of alterations or changes which have taken place during the course of transmission of electronic data.

The DRHP does not constitute an offer to sell or an invitation to subscribe to the securities offered in any jurisdiction to any person to whom it is unlawful to make an offer or invitation in such jurisdiction and is not intended for distribution to, or use by, any person or entity in any jurisdiction or country where (a) distribution or use of such information would be contrary to law or regulation; or (b) the Company or any of its affiliates would by virtue of such distribution become subject to new or additional registration, licensing or other regulatory requirements. The Equity Shares have not been and will not be registered under the U.S. Securities Act of 1933, as amended (the “U.S. Securities Act”) or any state securities laws in the United States, and unless so registered, may not be offered or sold within the United States except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the U.S. Securities Act and applicable U.S. state securities laws. Accordingly, the Equity Shares are being offered and sold outside the United States in offshore transactions in reliance on Regulation S and applicable laws of the jurisdictions where such offers and sales are made. There will be no public offering of the Equity Shares in the United States.

Any person into whose possession the DRHP comes is required to inform himself or herself about and to observe any such restrictions. Neither the Company nor any of its affiliates is soliciting any action based on the DRHP, and it should not be construed as an offer to sell or the solicitation of an offer to buy any securities. Potential investors should not rely on the DRHP for any investment decision.

Any decision on whether to invest in the equity shares described in the DRHP may only be made after a red herring prospectus has been filed with the Registrar of Companies, Maharashtra at Mumbai and the SEBI and must be made solely on the basis of such red herring prospectus, as there may be material changes in the red herring prospectus compared to the DRHP. Invitations to subscribe to or purchase the equity shares in the Offer will be made only pursuant to the red herring prospectus if the recipient is in India or the preliminary offering memorandum for the Offer, which comprises the red herring prospectus and the preliminary international wrap for the Offer, if the recipient is outside India. No person outside India is eligible to Bid for equity shares in the Offer unless that person has received the preliminary offering memorandum for the Offer, which shall contain the selling restrictions for the Offer outside India.

Any potential investor should note that investment in equity shares involves a high degree of risk and for details relating to such risk, please see the section titled “Risk Factors” of the red herring prospectus, when available.

Neither the Company nor any of its affiliates will be responsible for any loss or damage that could result from interception and interpretation by any third parties of any information being made available to you through this website. The Company and its affiliates cannot and do not guarantee the accuracy, timeliness or completeness of the information being made available to you in the DRHP beyond the date of the DRHP. The information contained in the DRHP may not be updated since its original publication date and may not reflect the latest updates. The Company and its affiliates will not be responsible for any loss to any person or entity caused by any shortcoming, defect or inaccuracy which may have inadvertently or otherwise crept into the website. Neither the Company, any of its affiliates nor their directors, officers and employees will be liable or have any responsibility of any kind for any loss or damage that you incur in the event of any failure or disruption of this website, or resulting from the act or omission of any other party involved in making this website or the data contained therein available to you, or from any other cause relating to your access to, inability to access, or use of the website or these materials.

If you are not permitted to view the materials on this website or are in any doubt as to whether you are permitted to view these materials, please exit this webpage. To access this information, you must confirm by pressing on the button marked “I Confirm” that, at the time of access you are located and resident in India. If you cannot make this confirmation, you must press the button marked “I Do Not Confirm”.

The documentation contained in these pages is posted solely to comply with Indian legal and regulatory requirements. Making the information contained herein available in electronic format does not constitute an offer to sell, the solicitation of an offer to buy, or a recommendation to buy or sell securities of the Company in the United States or in any other jurisdiction, including without limitation, India.

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DISCLAIMER – IMPORTANT

To access this information, you must confirm, by pressing on the button marked “I Confirm”, that at the time of access, you are located and resident in India. If you cannot make this confirmation, you must press the button marked “I Do Not Confirm”.

The documentation contained in these pages is posted solely to comply with Indian legal and regulatory requirements. Making the information contained herein available in electronic format does not constitute an offer to sell, the solicitation of an offer to buy, or a recommendation to buy or sell securities of the Company in the United States or in any other jurisdiction, including without limitation, India.

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DISCLAIMER – IMPORTANT

To access this information, you must confirm, by pressing on the button marked “I Confirm”, that at the time of access, you are located and resident in India. If you cannot make this confirmation, you must press the button marked “I Do Not Confirm”.

The documentation contained in these pages is posted solely to comply with Indian legal and regulatory requirements. Making the information contained herein available in electronic format does not constitute an offer to sell, the solicitation of an offer to buy, or a recommendation to buy or sell securities of the Company in the United States or in any other jurisdiction, including without limitation, India.

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DISCLAIMER – IMPORTANT

THESE MATERIALS ARE NOT DIRECTED AT OR INTENDED TO BE ACCESSED BY PERSONS LOCATED OUTSIDE INDIA. THESE MATERIALS ARE BEING MADE AVAILABLE ON THIS WEBSITE TO COMPLY WITH THE SECURITIES AND EXCHANGE BOARD OF INDIA (ISSUE OF CAPITAL AND DISCLOSURE REQUIREMENTS) REGULATIONS, 2018, AS AMENDED. IMPORTANT: You must read and agree with the terms and conditions of the following disclaimer before continuing. The following disclaimer applies to the draft red herring prospectus of SFC Environmental Technologies Limited (the “Company”) dated August 25, 2025 (the “DRHP”) filed with the Securities and Exchange Board of India (“SEBI”) and BSE Limited and National Stock Exchange of India Limited (“Stock Exchanges”) and hosted on this website in connection with the initial public offering of the equity shares of the Company (the “Offer”). You are advised to read the following notice carefully before accessing or making any other use of the DRHP. By accessing the DRHP, you agree to be bound by the following terms and conditions, including any modifications to them from time to time. The DRHP is directed at, and is intended for distribution to, and use by, residents of India only. The information in this portion of our website, including the DRHP, is not for publication or distribution, directly or indirectly, in or into the United States. No part of the contents of the DRHP shall be copied or duplicated in any form by any means or redistributed. The DRHP has been hosted on this website as prescribed under Regulation 26(4) of the Securities and Exchange Board of India (Issue of Capital and Disclosure Requirements) Regulations, 2018, as amended (the “SEBI ICDR Regulations”). You are reminded that documents transmitted in electronic form may be altered or changed during the process of transmission and consequently, neither the Company nor any of its affiliates accepts any liability or responsibility whatsoever in respect of alterations or changes which have taken place during the course of transmission of electronic data. The DRHP does not constitute an offer to sell or an invitation to subscribe to the securities offered in any jurisdiction to any person to whom it is unlawful to make an offer or invitation in such jurisdiction and is not intended for distribution to, or use by, any person or entity in any jurisdiction or country where (a) distribution or use of such information would be contrary to law or regulation; or (b) the Company or any of its affiliates would by virtue of such distribution become subject to new or additional registration, licensing or other regulatory requirements. The Equity Shares have not been and will not be registered under the U.S. Securities Act of 1933, as amended (the “U.S. Securities Act”) or any state securities laws in the United States, and unless so registered, may not be offered or sold within the United States except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the U.S. Securities Act and applicable U.S. state securities laws. Accordingly, the Equity Shares are being offered and sold outside the United States in offshore transactions in reliance on Regulation S and applicable laws of the jurisdictions where such offers and sales are made. There will be no public offering of the Equity Shares in the United States. Any person into whose possession the DRHP comes is required to inform himself or herself about and to observe any such restrictions. Neither the Company nor any of its affiliates is soliciting any action based on the DRHP, and it should not be construed as an offer to sell or the solicitation of an offer to buy any securities. Potential investors should not rely on the DRHP for any investment decision. Any decision on whether to invest in the equity shares described in the DRHP may only be made after a red herring prospectus has been filed with the Registrar of Companies, Maharashtra at Mumbai and the SEBI and must be made solely on the basis of such red herring prospectus, as there may be material changes in the red herring prospectus compared to the DRHP. Invitations to subscribe to or purchase the equity shares in the Offer will be made only pursuant to the red herring prospectus if the recipient is in India or the preliminary offering memorandum for the Offer, which comprises the red herring prospectus and the preliminary international wrap for the Offer, if the recipient is outside India. No person outside India is eligible to Bid for equity shares in the Offer unless that person has received the preliminary offering memorandum for the Offer, which shall contain the selling restrictions for the Offer outside India. Any potential investor should note that investment in equity shares involves a high degree of risk and for details relating to such risk, please see the section titled “Risk Factors” of the red herring prospectus, when available. Neither the Company nor any of its affiliates will be responsible for any loss or damage that could result from interception and interpretation by any third parties of any information being made available to you through this website. The Company and its affiliates cannot and do not guarantee the accuracy, timeliness or completeness of the information being made available to you in the DRHP beyond the date of the DRHP. The information contained in the DRHP may not be updated since its original publication date and may not reflect the latest updates. The Company and its affiliates will not be responsible for any loss to any person or entity caused by any shortcoming, defect or inaccuracy which may have inadvertently or otherwise crept into the website. Neither the Company, any of its affiliates nor their directors, officers and employees will be liable or have any responsibility of any kind for any loss or damage that you incur in the event of any failure or disruption of this website, or resulting from the act or omission of any other party involved in making this website or the data contained therein available to you, or from any other cause relating to your access to, inability to access, or use of the website or these materials. If you are not permitted to view the materials on this website or are in any doubt as to whether you are permitted to view these materials, please exit this webpage. To access this information, you must confirm by pressing on the button marked “I Confirm” that, at the time of access you are located and resident in India. If you cannot make this confirmation, you must press the button marked “I Do Not Confirm”. The documentation contained in these pages is posted solely to comply with Indian legal and regulatory requirements. Making the information contained herein available in electronic format does not constitute an offer to sell, the solicitation of an offer to buy, or a recommendation to buy or sell securities of the Company in the United States or in any other jurisdiction, including without limitation, India.
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Vision

Empowering a sustainable world through innovative solutions, SFC envisions a future where environmental responsibility and cutting-edge technology harmoniously coexist, creating a cleaner and more prosperous planet for all.