The Asia Pacific water and wastewater treatment market was valued at USD 176.06 Billion in 2025. The market is expected to grow at a CAGR of 7.70% during the forecast period of 2026-2035 to reach a value of USD 369.67 Billion by 2035. Rapid industrial expansion in sectors like chemicals, textiles, and food processing is driving demand for advanced wastewater treatment solutions, particularly zero-liquid discharge systems, across Asia Pacific’s fast-growing economies.
The market growth is being propelled by regulatory reforms and sustainability mandates. One major driving factor is the surge in water reuse initiatives. For instance, China introduced its first national-level Regulations on Water Conservation in May 2024, which sets sector-specific water quotas and recycling targets, accelerating the Asia Pacific water and wastewater treatment market growth. Meanwhile, Indonesia’s national water strategy aims for 100% urban coverage by 2030, supported by large-scale infrastructure like the Buaran III Water Treatment Plant, expected to add 260,000 cubic meters of clean water per day to communities in Jakarta by 2025. These developments highlight the region’s dual focus on urban resilience and industrial compliance.
The region is also benefitting from multilateral backing. Programs like the Asian Development Bank’s Water Resilience Initiative and the 2025–2034 Regional 3R and Circular Economy Declaration are channeling funds toward advanced treatment and reuse systems, reshaping the Asia Pacific water and wastewater treatment market dynamics. In Cambodia, the Livable Cities Investment Project supported by a USD 180 million loan is expanding wastewater networks and flood control for fast-growing cities such as Kampot and Poipet. These projects emphasize how international partnerships are bridging funding gaps.
Base Year
Historical Period
Forecast Period
Compound Annual Growth Rate
7.7%
Value in USD Billion
2026-2035
*this image is indicative*
Governments across Asia Pacific are intensifying water reuse regulations to address scarcity. China’s 2024 Water Conservation Regulations enforce higher recycling rates, while India’s draft Liquid Waste Management Rules mandate phased reuse across residential and industrial sectors. These rules are accelerating infrastructure spending and pushing industries toward membrane bioreactors, high-efficiency recycling, and automated compliance systems. Public reporting mechanisms and financial penalties for non-compliance are creating a clear business case for investment in advanced systems. This Asia Pacific water and wastewater treatment market trend positions water reuse not as an option but as a central pillar of urban and industrial sustainability strategies across the region.
Utilities are embracing digital water management to enhance efficiency and reduce costs. In October 2024, Bangkok’s Metropolitan Waterworks Authority expanded its Digital Water Grid, leveraging real-time sensors and AI analytics to minimize leaks and optimize energy use. For instance, Singapore’s PUB, in collaboration with Siemens, offers predictive maintenance technologies at reclamation plants, extending asset life, widening the Asia Pacific water and wastewater treatment market expansion. These innovations are enabling data-driven decision-making, reducing downtime, and ensuring compliance with tighter water quality standards.
Rapid urbanization is overwhelming traditional wastewater infrastructure, prompting heavy investment in modern systems. Cambodia’s Livable Cities Investment Project to build new treatment plants and expand sewerage in cities like Poipet and Bavet. According to the Asia Pacific water and wastewater treatment market analysis, these facilities aim to serve over 2 million residents and improve flood resilience. Similar efforts are visible in Vietnam and Indonesia, where governments are accelerating wastewater projects to cope with urban demand.
Asia Pacific is rapidly adopting advanced treatment technologies. Membrane bioreactors (MBRs) are gaining traction in dense cities like Singapore due to their high efficiency and small footprint. Thailand and China are integrating AI and IoT systems into treatment plants to reduce energy use and ensure compliance. Industries, especially in chemicals and textiles, are adopting activated carbon and zero-liquid discharge (ZLD) to meet stringent norms, accelerating the Asia Pacific water and wastewater treatment market opportunities.
Regional partnerships are emerging as key enablers of efficiency. The Asian Development Bank’s Water Resilience Initiative is financing projects across ASEAN, while Japanese firms are transferring automation expertise to South Asia. Vietnam’s Phu My Wastewater Treatment Plant, launched with Dutch engineering firm Royal HaskoningDHV in July 2017, showcases how global-local collaborations deliver scalable impact. These alliances provide access to capital, advanced technologies, and operational expertise.
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The EMR’s report titled “Asia Pacific Water and Wastewater Treatment Market Report and Forecast 2026-2035” offers a detailed analysis of the market based on the following segments:
Market Breakup by Equipment
Key Insight: Membrane, biological, disinfection, sludge and niche equipment categories are evolving as clear, distinct driving factors of the surging Asia Pacific water and wastewater treatment market value. Membranes dominate for high-quality reuse and foul-resistant properties. Biological systems remain crucial for bulk organic removal and lower operational cost. Disinfection growth is spurred by stricter hygiene standards and portable modular solutions. Sludge equipment is shifting toward energy-positive digestion and resource recovery, turning waste into revenue.
Market Breakup by Chemical
Key Insight: Chemical categories including pH conditioners, coagulants, disinfectants, antifoams, inhibitors and others, are responding to different operational and regulatory needs. Coagulants and flocculants dominate clarification and sludge handling, often coupled with predictive dosing systems, driving the Asia Pacific water and wastewater treatment market revenue. Disinfectants are adapting to stricter hygiene expectations with UV and advanced oxidants. pH conditioners and antifoams are optimizing reactions and preventing process upsets, while scale and corrosion inhibitors are protecting capital equipment in thermal and saline contexts.
Market Breakup by Process
Key Insight: Primary, secondary and tertiary processes are being reimagined to support reuse and resource recovery priorities. Primary treatment remains essential for solids removal and grit management in new and upgraded plants, accelerating the water and wastewater treatment consumption in Asia Pacific. Secondary biological processes are optimized with sensor-driven aeration, bioaugmentation and membrane integration to lower energy use and footprint. Tertiary systems are expanding for microcontaminant removal, nutrient recovery and potable reuse readiness.
Market Breakup by Application
Key Insight: Municipal, industrial and agricultural applications are contributing to the Asia Pacific water and wastewater treatment market growth with distinct innovations. Municipal systems are focusing on decentralized reuse, tertiary upgrades, and water-as-a-service contracts to expand coverage affordably. Industrial users are prioritizing ZLD, modular skids and integrated chemistry-plus-O&M bundles to meet strict discharge norms while recovering value.
Market Breakup by Region
Key Insight: As per the Asia Pacific water and wastewater treatment market report, China is prioritizing scale, strict enforcement and membrane-heavy reuse projects. Japan is leading in automation, material science and compact, high-efficiency process design for industrial customers. India is rapidly scaling modular plants, PPP financing and local manufacturing to accelerate urban coverage. ASEAN countries are favoring hybrid desalination and reuse for coastal urban centers, while Australia is focusing on nutrient recovery and aquifer recharge.
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By equipment, membrane separation registers the largest market share due to superior contaminant removal
Membrane separation is the pillar of advanced water treatment in Asia Pacific, favored for its ability to remove micropollutants, viruses, and salts without chemical overuse. Recent nanocomposite membranes are reducing fouling and energy intensity, extending run-times and shrinking lifecycle costs for operators. Municipal utilities in dense cities prefer ultrafiltration and reverse osmosis hybrids for potable reuse, while industrial users select nanofiltration for targeted separation and resource recovery.
Disinfection equipment is expanding its share in the Asia Pacific water and wastewater treatment market, driven by public health priorities and industrial hygiene demands. Other than legacy chlorination, new UV-LED, advanced oxidation, and plasma-based units are being deployed for compact, energy-efficient pathogen control. Portable and modular disinfection skids enable emergency response and decentralized treatment.
By chemical, coagulants and flocculants accounts for the leading market share due to essential clarification role
Coagulants and flocculants, delivering reliable solids capture and enabling efficient sludge dewatering for downstream processing, represent the dominant share of the market. In rapidly industrializing regions, suppliers are introducing polymer blends tailored to high-strength industrial effluents, reducing chemical dosages and improving filterability.
Scale and corrosion inhibitors are experiencing fast-paced growth in the Asia Pacific water and wastewater treatment market as industrial operators seek to protect high-value assets. Advanced inhibitor chemistries are being formulated to withstand high-temperature, high-salinity streams typical in ZLD and thermal concentration units. Vendors are offering tailored inhibitor packages paired with remote monitoring to signal scaling thresholds and trigger automated dosing, preventing downtime and costly manual interventions.
Secondary treatment clocks in the maximum share of the market due to efficient biological removal
Secondary treatment, with activated sludge and biofilm reactors, removes organic load and nutrients across APAC municipal and industrial plants. Operators are optimizing aeration with sensor-driven dissolved oxygen control, variable-speed blowers, and intermittent aeration strategies to reduce energy intensity. Packaged biofilm systems are being favored in space-constrained urban retrofits, delivering robust nitrification-denitrification in compact footprints. Integration with membrane polishing units is enabling direct reuse applications, boosting demand in the Asia Pacific water and wastewater treatment market.
Tertiary treatment is the fastest-growing process category as regulators and utilities demand reuse-grade effluent and nutrient recovery. Advanced membrane filtration, activated carbon polishing, and targeted ion exchange are being combined into compact tertiary trains capable of removing microcontaminants and emerging pollutants. Operators are integrating nutrient recovery modules that extract phosphorus and ammonia for fertilizer markets, creating circular revenue streams.
Municipal applications secure the largest share of the market due to urbanization and regulation
Municipal wastewater treatment continues to dominate the Asia Pacific water and wastewater treatment demand forecast as cities expand and sanitation targets tighten. Beyond centralized plants, innovation is focused on decentralized containerized units, neighborhood reuse hubs, and resource recovery to serve peri-urban communities. Municipalities are increasingly contracting private operators under water-as-a-service models to avoid capex burdens while accessing advanced treatment technology.
Growth of industrial applications are driven by stricter effluent norms and the need for circular water use in sectors like chemicals, textiles, semiconductors and food processing. Industries are deploying ZLD, MBRs and hybrid desalination-reuse trains to reclaim process water and recover salts and chemicals as revenue streams. Suppliers are offering integrated chemistry, membrane modules and O&M packages under long-term contracts to guarantee compliance and uptime.
China leads the market due to vast infrastructure and enforcement
China leads the Asia Pacific market with expansive municipal upgrades, aggressive reuse mandates, and major industrial retrofits. The country is deploying membrane-heavy trains, PFAS-targeted treatment units, and large-scale nutrient recovery projects to meet national targets. Local firms are pairing modular process skids with national digital platforms for compliance reporting, enabling faster approvals and replicable deployment across provinces.
India represents the fastest-growing water and wastewater treatment market in Asia Pacific, driven by urbanization, national missions and funding for sewage networks and treatment plants. Smart city programs are favoring modular, plug-and-play solutions for rapid deployment in mid-sized cities and peri-urban zones. Industrial ZLD adoption is accelerating in textiles and pharmaceuticals where compliance penalties are increasing, and suppliers are offering compact ZLD skids coupled with remote monitoring to cut OPEX.
Leading Asia Pacific water and wastewater treatment market players are leveraging scale, integrated service offerings and digital platforms to win large urban and industrial clients, while regional firms are competing on cost, fast localization and bundled O&M. Key opportunities lie in modularization, ZLD, membrane-as-a-service, and sensor-enabled predictive maintenance where suppliers can differentiate on speed-to-deploy and lifecycle economics. Mid-sized engineering firms are moving into subscription models and partnering with chemical suppliers to offer turnkey compliance packages.
Private investors and multilateral banks are prioritizing projects with measurable circularity outcomes, creating financing channels for resource recovery projects. Asia Pacific water and wastewater treatment companies that combine modular hardware, validated digital operations and creative financing to convert capex-heavy projects into recurring revenue streams. Players that can offer proven pilot outcomes, performance guarantees, and local O&M capacity are winning priority access to tenders and PPPs.
Founded in 1872, with its headquarters located in Germany, Huber SE is supplying robust mechanical equipment and compact process plants tailored to municipal and industrial needs across Asia Pacific. The firm is pushing automated screening, grit removal, and modular sludge systems that reduce energy use in dense cities.
Founded in 1869 and based in Paris, France, SUEZ combines large-scale engineering with digital water platforms to serve cities and factories across Asia Pacific. The company offers seawater desalination, industrial water reuse, and data-driven network management.
Based in 1853 and founded in the year 1870, Veolia delivers end-to-end treatment plants and specialty processes for heavy industry and utilities in Asia Pacific. It is scaling advanced membrane solutions, energy-recovery sludge lines and PFAS mitigation packs for industrial clients.
Founded in 1949 and based in Japan, Kurita is concentrating on industrial water management, chemical dosing, and zero-liquid-discharge (ZLD) solutions for Asia Pacific manufacturers. The company is commercializing compact ZLD trains, on-site recycling packages, and process chemicals formulated to reduce fouling and downtime in textile, power and semiconductor plants.
*Please note that this is only a partial list; the complete list of key players is available in the full report. Additionally, the list of key players can be customized to better suit your needs.*
Other key players in the market are Thermax Limited, SWA Water Australia, and MattenPlant Pte Ltd., among others.
Explore the latest trends shaping the Asia Pacific water and wastewater treatment market 2026-2035 with our in-depth report. Gain strategic insights, future forecasts, and key market developments that can help you stay competitive. Download a free sample report or contact our team for customized consultation on Asia Pacific water and wastewater treatment market trends 2026.
Digital Water Platforms In Asia Pacific
Urban Stormwater Management In Asia Pacific
Urban Sludge And Septage Management In Asia Pacific
Industrial Water Reuse In Asia Pacific
Membrane Filtration in Asia Pacific
Containerized Water Treatment In Asia Pacific
Asia Pacific PPP Models In Water Infrastructure
Smart Water Meters In Asia Pacific
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*While we strive to always give you current and accurate information, the numbers depicted on the website are indicative and may differ from the actual numbers in the main report. At Expert Market Research, we aim to bring you the latest insights and trends in the market. Using our analyses and forecasts, stakeholders can understand the market dynamics, navigate challenges, and capitalize on opportunities to make data-driven strategic decisions.*
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In 2025, the Asia Pacific water and wastewater treatment market reached an approximate value of USD 176.06 Billion.
The market is projected to grow at a CAGR of 7.70% between 2026 and 2035.
The key players in the market include Huber SE, SUEZ SA, Veolia Water Solutions and Technologies, Kurita Water Industries Ltd., Thermax Limited, SWA Water Australia, and MattenPlant Pte Ltd., among others.
Prioritizing pilot projects, partnering with local utilities, adopting modular ZLD and membrane packages, offering O&M contracts, and integrating sensor-driven compliance dashboards are strengthening market entry and scale-up.
Rising raw material costs, fragmented procurement, stringent local regulations, financing gaps for municipal projects, and workforce shortages are constraining rapid deployment of advanced treatment systems across diverse Asia Pacific water and wastewater treatment markets.
Explore our key highlights of the report and gain a concise overview of key findings, trends, and actionable insights that will empower your strategic decisions.
| REPORT FEATURES | DETAILS |
| Base Year | 2025 |
| Historical Period | 2019-2025 |
| Forecast Period | 2026-2035 |
| Scope of the Report |
Historical and Forecast Trends, Industry Drivers and Constraints, Historical and Forecast Market Analysis by Segment:
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| Breakup by Equipment |
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| Breakup by Chemical |
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| Breakup by Process |
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| Breakup by Application |
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| Breakup by Region |
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| Market Dynamics |
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| Competitive Landscape |
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| Companies Covered |
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