The water and wastewater management market is set for strong growth, projected to increase by USD 3.1 billion from 2024 to 2029 with a 7.5 percent CAGR. A 7.2 percent year-over-year rise is expected in 2025 alone, fueled by rapid advancements in sustainable infrastructure and rising global demand. Here’s a look at the top 5 affordable wastewater management stocks to watch in 2025 for potential long-term growth.

List of five small-cap wastewater management stocks under Rs. 500 to watch in 2025

1. Enviro Infra Engineers Limited

    With a market capitalization of Rs. 3,474.62 crore, the shares of Enviro Infra Engineers Limited closed at Rs. 197.95 per equity share, down nearly 3.93 percent from its previous day’s close price of Rs. 206.05. 

    Enviro Infra Engineers Limited was established in 2009 and specializes in the design, construction, operation, and maintenance of water and wastewater treatment plants, including sewage and effluent treatment facilities, for government and industrial clients across India.

    Enviro Infra Engineers Limited’s revenue has increased from Rs. 150 crore in Q3 FY24 to Rs. 247 crore in Q3 FY25, which has grown by 64.67 percent. The net profit has also grown by 100 percent from Rs. 24 crore in Q3 FY24 to Rs. 48 crore in Q3 FY25.

    2. Vishnu Prakash R Punglia Limited

    With a market capitalization of Rs. 2,142.63 crore, the shares of Vishnu Prakash R Punglia Limited closed at Rs. 171.90 per equity share, down nearly 4.18 percent from its previous day’s close price of Rs. 179.40. 

    Vishnu Prakash R Punglia Limited is an integrated EPC company with over 35 years of experience in water and wastewater management. The company specializes in designing and constructing water supply and sewerage projects, including pipelines, reservoirs, and treatment plants, focusing on sustainable solutions for government and private clients.

    Vishnu Prakash R Punglia Limited’s revenue has decreased from Rs. 242.05 crore in Q3 FY24 to Rs. 240.93 crore in Q3 FY25, which has dropped by 0.46 percent. The net profit has reduced by 77.78 percent from Rs. 24 crore in Q3 FY24 to Rs. 3.86 crore in Q3 FY25.

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    3. Denta Water and Infra Solutions Limited

    With a market capitalization of Rs. 765.09 crore, the shares of Denta Water and Infra Solutions Limited closed at Rs. 286.55 per equity share, down nearly 2.35 percent from its previous day’s close price of Rs. 293.45. 

    Denta Water and Infra Solutions Limited specializes in designing, installing, and commissioning water and wastewater management infrastructure, with a strong focus on groundwater recharge using recycled water. The company has completed over 30 major projects, notably supporting Bengaluru’s wastewater management and government initiatives like the Jal Jeevan Mission.

    Denta Water and Infra Solutions Limited’s revenue has increased from Rs. 46 crore in Q3 FY24 to Rs. 51 crore in Q3 FY25, which has grown by 10.87 percent. The net profit has also grown by 114.29 percent from Rs. 7 crore in Q3 FY24 to Rs. 15 crore in Q3 FY25.

    4. Indian Hume Pipe Company Limited

    With a market capitalization of Rs. 2,011.13 crore, the shares of Indian Hume Pipe Company Limited closed at Rs. 381.75 per equity share, down nearly 1.81 percent from its previous day’s close price of Rs. 388.80. 

    Indian Hume Pipe Company Limited is a leading EPC company in India specializing in water supply, sewerage, and drainage projects. The company manufactures and installs durable concrete and steel pipes and executes turnkey wastewater management projects, including sewer pipelines, pumping stations, and allied civil works for urban and rural infrastructure.

    Indian Hume Pipe Company Limited’s revenue has increased from Rs. 319 crore in Q3 FY24 to Rs. 381 crore in Q3 FY25, which has grown by 19.44 percent. The net profit has reduced by 6.67 percent from Rs. 15 crore in Q3 FY24 to Rs. 14 crore in Q3 FY25.

    5. Ion Exchange (India) Limited

    With a market capitalization of Rs. 7,334.80 crore, the shares of Ion Exchange (India) Limited closed at Rs. 500.10 per equity share, down nearly 3.39 percent from its previous day’s close price of Rs. 517.65. 

    Ion Exchange (India) Limited is a pioneer in water and environment management with over 60 years of expertise, offering comprehensive wastewater treatment solutions. The company specializes in innovative, energy-efficient technologies for recycling, resource recovery, and zero liquid discharge, serving diverse industries and municipalities.

    Ion Exchange (India) Limited’s revenue has increased from Rs. 554 crore in Q3 FY24 to Rs. 691 crore in Q3 FY25, which has grown by 24.73 percent. The net profit has also grown by 6.38 percent from Rs. 47 crore in Q3 FY24 to Rs. 50 crore in Q3 FY25.

    Written By – Nikhil Naik

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