How big is the Biological Wastewater Treatment Market | Share 2025

Q: How big is the biological wastewater treatment market?

The market was estimated at USD 10.5 billion in 2024 and is expected to reach USD 20 billion by 2031.

Q: What trends are shaping the biological wastewater treatment market?

Major trends include membrane bioreactors, digital control systems, biogas recovery, and hybrid treatment technologies.

Q: Which regions are leading in biological wastewater treatment adoption?

Europe and North America lead the market with the tech adoption and Asia-Pacific is growing fastest due to water reuse and industrial demand.

Q: What are the key drivers of this market’s growth?

Stricter discharge norms, water scarcity, decentralization of treatment, and sustainable infrastructure investment are major drivers.

Q: How does 6W market outlook report help businesses in making decisions?

6W monitors the market across 60+ countries Globally, publishing an annual market outlook report that analyses trends, key drivers, Size, Volume, Revenue, opportunities, and market segments. This report offers comprehensive insights, helping businesses understand market dynamics and make informed decisions.

Q: Do you also provide customisation in the market study?

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Code: MTA4803

Publication Date: Jul 2025

What is the size of the Biological Wastewater Treatment Market?

According to 6Wresearch internal database and industry insights, the Biological Wastewater Treatment Market was demonstrated around USD 10.5 billion in 2024 and is projected to reach USD 20 billion by 2031, growing at a CAGR of 9.7% during the forecast period 2025–2031.

Due to increasing water scarcity, strict discharge regulations, urban population growth, and industrial expansion across emerging markets, the market is predicted to grow.

Key Growth Factors of the Biological Wastewater Treatment Market

Compliance stringent environmental regulations on industrial and municipal effluent
Increasing awareness of sustainable water management practices
Rising demand for decentralized treatment systems in urban & rural areas
Support of government through investments in upgrading sewage infrastructure
Cost-effectiveness and energy efficiency of biological treatment technologies

Biological Wastewater Treatment Market Trends

The market is accelerating with rising demand for aerobic and anaerobic treatment systems, especially in food & beverage, pharmaceuticals, pulp & paper, and textile industries. Increasing deployment of membrane bioreactors (MBRs), sequencing batch reactors (SBRs), and moving bed biofilm reactors (MBBRs) is enhancing treatment efficiency and compactness.

The integration of IoT and AI for process automation is increasing, real-time water quality monitoring, and predictive maintenance. Adoption of zero-liquid discharge (ZLD) and biogas recovery from anaerobic digestion is transforming wastewater from a liability to a resource.

Emerging Developments in the Biological Wastewater Treatment Market

Market is seeing few developments include advanced microbial consortia for high-load wastewater, and bioaugmentation using genetically enhanced bacteria for faster pollutant degradation. Further, hybrid systems combined with biological and physicochemical processes are gaining traction to meet tightening standards. Developing countries are prioritizing sludge reduction technologies, energy-neutral plants, and public-private partnerships (PPP) to bridge treatment gaps. Europe leads in innovation, while Asia-Pacific drives volume due to rapid urbanization and water reuse mandates.