Effwa Infra & Research is an environmental engineering company that designs and builds industrial-scale water treatment plants - essentially, it takes the toxic wastewater from steel mills, refineries and power stations and cleans it so thoroughly that not a drop leaves the site. Founded in 2014 by two IIT alumni who had already spent decades in the water industry, the company has grown from handling 3-million-litre-per-day projects to executing what it describes as the largest-capacity Zero Liquid Discharge plant under construction in India. Everything it does follows a single recurring logic: it competes for complex, high-stakes projects where the technical bar is high enough to keep out all but a handful of rivals, then delivers them on an asset-light, in-house model that runs from design through to long-term maintenance.
Business segments
A single integrated business - designing and building industrial water and wastewater treatment plants - with a small attached O&M annuity and early-stage bets on municipal exports and data-centre water, all flowing from the same engineering core.
1. Effluent treatment and Zero Liquid Discharge: the factory floor that earns the money
Nine out of every ten rupees the company earns comes from building treatment plants that strip pollutants from industrial wastewater until the water can be reused and nothing is left to dispose of.
- The core promise is Zero Liquid Discharge - the company’s plants recover and recycle water from effluent streams so that factories discharge no liquid waste at all, a requirement that is becoming non-negotiable for heavy industry.
- It competes in a narrow, high-barrier field - while hundreds of companies operate in pollution control broadly, Effwa sits in a selective tier of at most ten players differentiated by technology, past credentials and financial capacity, with WABAG and Thermax named as the peers in large-scale water treatment.
- The technical toolkit is broad and kept in-house - the company’s stack spans membrane bioreactors, reverse osmosis, biological treatment (both aerobic and anaerobic), thermal ZLD packages and SCADA-based remote automation, all managed by a team of 12 design engineers and 76 site engineers across every discipline from civil to instrumentation.
- Clients are India’s industrial backbone - the order book is built on relationships with Tata Steel (28 completed projects), SAIL, JSW Steel, Vedanta, NTPC, IndianOil, Reliance, Adani and ONGC, with roughly 61% of revenue coming from public-sector undertakings and 38% from private players in FY26.
- Scale has become a qualification in itself - having delivered a 135 MLD plant for Sukinda Mines and now executing a 50 MLD ZLD facility with a first-of-its-kind column-less control building, the company has crossed the technical threshold to bid for single projects exceeding ₹400 crore.
2. Operation and maintenance: the recurring cheque that comes after the plant is built
Once a treatment plant is commissioned, the company typically stays on to run it for three to five years, turning lumpy project revenue into a predictable annual stream.
- O&M is bundled into almost every new contract - the company actively encourages clients to include a three- or five-year operations period in the EPC award, and nearly all new projects now carry such a clause.
- It is small but sticky - O&M contributed 3% of revenue in FY26, but because the company is building a growing installed base of plants that each generate multi-year maintenance engagements, the segment is seen internally as a source of predictable recurring revenue.
- A dedicated team runs it - post-commissioning, a specialised AMC and O&M team takes over, separate from the project execution workforce, with a five-year engagement at SAIL Durgapur cited as a representative long-term contract.
3. Water treatment and international exports: the beachhead beyond Indian industry
The company builds drinking-water treatment plants and distribution systems, mostly for municipal clients in Africa, using the same engineering skills it deploys on industrial effluent - but this is a selective, project-by-project expansion, not yet a second engine.
- The work is infrastructure, not just equipment supply - contracts involve designing the plant, procuring raw materials, constructing jack wells and pump houses, laying pipelines, installing electro-mechanical systems and commissioning the entire facility.
- Africa is the proving ground - the company has secured export contracts in Tanzania and Ivory Coast worth a combined USD 5.8 million, with the African region described as an important growth lever where multiple projects are under evaluation.
- Exports are lumpy and early-stage - international work contributed 12.8% of revenue in FY26 but dropped to just 3% in the second half of the year, reflecting the project-based nature of the business.
- The pitch is modular, low-footprint ZLD - for emerging-nation clients, the company claims an advantage in compact systems suited to constrained sites, and it is also eyeing EU markets where wastewater reuse mandates are tightening and the Middle East where desalination-linked ZLD is in demand.
Group structure and partners
A founder-led, standalone company with no subsidiaries or joint ventures, relying on a tight in-house team and a network of external consultants for project delivery.
- The company has no subsidiaries, joint ventures or associate companies - it is a single corporate entity.
- The two promoters are Dr. Varsha Kamal (Chairperson and Managing Director, with a PhD in environmental science from Carleton University and an MTech from IIT) and Mr. Subhash Kamal (Whole-time Director, with a BE in civil engineering and an MTech from IIT), both with over 25 years in the water treatment industry before founding Effwa.
- A six-member board includes three independent directors, and the key managerial team is rounded out by a CFO and a company secretary.
- The company is recognised by leading engineering consultants - including WAPCOS, MECON, Mott MacDonald, DASTUR and Tata Consulting Engineers - whose approval is often a prerequisite for bidding on large public-sector tenders.
- An advisory board of industrialists and corporate members supplements the internal leadership, and the company also draws on strategic alliances with unnamed global firms for specialised expertise.