Water and Wastewater Treatment Equipment Market to Exceed USD 136.6 Billion by 2035

The Global Water and Wastewater Treatment Equipment Market was valued at USD 76.3 billion in 2025 and is projected to reach USD 136.6 billion by 2035, growing at a CAGR of 6.0% from 2025 to 2035. The growth of the market can be attributed to rising water scarcity, stricter wastewater discharge regulations, rapid urbanization, and growing demand for clean water across municipal, industrial, and commercial sectors. Increasing investments in sewage treatment plants, desalination systems, filtration units, membrane technologies, and sludge treatment equipment are also supporting steady market expansion.

Asia Pacific held the largest regional share of 42.7% in 2025, supported by strong infrastructure development, high population density, industrial expansion, and rising government spending on water treatment projects. Countries such as China, India, Japan, South Korea, and Southeast Asian economies are witnessing higher demand for advanced treatment systems due to increasing municipal wastewater generation and industrial water reuse needs. The region is expected to remain a key growth hub as public and private investments continue to improve water supply reliability, pollution control, and sustainable wastewater management.

Key Market Insights

• Municipal applications led the market with 68.4% share, supported by rising demand for clean water supply, sewage treatment, urban sanitation, and public wastewater management.

• Tertiary treatment accounted for 45.5% share by process, driven by its role in advanced contaminant removal, water reuse, nutrient reduction, and improved discharge quality.

• Asia Pacific held 42.7% share of the water and wastewater treatment equipment market, supported by rapid urbanization, industrial growth, rising water demand, and increasing investment in treatment infrastructure.

Market Overview

The Water and Wastewater Treatment Equipment Market covers systems used to remove physical, chemical, and biological contaminants from drinking water, municipal wastewater, and industrial effluent. These systems include filtration units, membranes, clarifiers, disinfection equipment, pumps, sludge treatment units, chemical dosing systems, and monitoring solutions. Demand is rising as cities, industries, and utilities work to improve water quality, reduce pollution, and expand access to safe water services.

The need for treatment equipment remains strong because WHO and UNICEF reported that 2.1 billion people still lacked safely managed drinking water in 2024, while 3.4 billion people lacked safely managed sanitation. The market is also being supported by stricter discharge rules, water reuse programs, industrial expansion, and growing concern over untreated wastewater entering rivers, lakes, and coastal areas.

UN-Water reported that 42% of household wastewater was not safely treated before discharge in 2022, releasing an estimated 113 billion cubic meters of inadequately treated wastewater into the environment. Industrial wastewater treatment also remains a major gap, as reported data from 22 countries showed that only 38% of industrial wastewater was treated and only 27% was safely treated.

Go-to-Market and Sales Economics

The water and wastewater treatment equipment market is driven by public infrastructure spending, industrial compliance, water scarcity, urban growth, and stricter water quality standards. Key buyers include municipal utilities, industrial plants, commercial facilities, engineering contractors, government agencies, and project developers. The market includes filtration systems, membrane systems, disinfection units, pumps, valves, aeration systems, sludge handling equipment, tertiary treatment units, PFAS treatment systems, sensors, and digital monitoring platforms.

Municipal utilities remain a major customer group because drinking water and wastewater plants need regular upgrades, replacement parts, and long-term service support. Aging pipelines, old treatment plants, stormwater pressure, and emerging contaminants are increasing demand for treatment equipment. In the U.S., EPA estimates USD 625 billio n in drinking water infrastructure needs and at least USD 630 billio n in wastewater, stormwater, and clean water infrastructure needs over the next 20 years .

Industrial customers also create strong demand for water and wastewater treatment equipment. Food and beverage, pharmaceuticals, chemicals, semiconductors, mining, oil and gas, textiles, and power generation facilities use these systems to meet discharge rules, reduce freshwater use, recover process water, and avoid penalties. Buying decisions are mainly based on compliance, operating cost savings, production continuity, and sustainability targets.

Investment Opportunity Analysis

Application Analysis

Municipal applications led the Water and Wastewater Treatment Equipment Market with 68.4% share , supported by rising investment in drinking water systems, sewage treatment plants, stormwater management, and public utility upgrades. The demand for municipal equipment is being driven by aging treatment plants, growing urban populations, stricter discharge standards, and the need to provide safe and reliable water services. Municipal utilities require filtration systems, pumps, membranes, disinfection units, aeration systems, sludge treatment equipment, and monitoring platforms to maintain daily operations and meet regulatory requirements.

Process Analysis

Tertiary treatment accounted for 45.5% share, driven by the growing need for advanced water purification after primary and secondary treatment stages. This process is used to remove remaining contaminants, nutrients, suspended solids, pathogens, and trace pollutants before treated water is discharged or reused. Demand is increasing as utilities and industries focus on water reuse, nutrient control, stricter wastewater limits, and protection of rivers, lakes, and groundwater resources

Regional Analysis

Asia Pacific led the Water and Wastewater Treatment Equipment Market with 42.7% share , supported by rapid urbanization, industrial expansion, rising water demand, and growing investment in municipal water infrastructure. Countries such as China, India, Japan, South Korea, Indonesia, Vietnam, and Australia are increasing focus on safe drinking water, wastewater reuse, sewage treatment, and pollution control. The demand for equipment such as filtration systems, membrane systems, pumps, disinfection units, sludge treatment systems, and monitoring platforms continues to rise as cities expand and water quality standards become stricter.

The growth of the Asia Pacific market can also be attributed to increasing pressure on freshwater resources and the need to treat wastewater before discharge or reuse. Industrial facilities, municipal utilities, and public agencies are investing in advanced treatment technologies to meet environmental rules, reduce water loss, and improve long-term water security. The region is expected to remain a major demand center as governments and industries continue to modernize water networks, upgrade aging treatment plants, and expand wastewater treatment capacity across urban and semi-urban areas.

Segment covered in the Report

By Application

• Municipal

• Industrial

By Process

• Primary Treatment

• Secondary Treatment

• Tertiary Treatment

By Region

• Asia Pacific

• North America

• Europe

• Middle East & Africa

• Latin America

Drivers Impact Analysis

Restraints Impact Analysis

Opportunities Impact Analysis

Recent Developments

• May 2026: VA Tech WABAG was awarded a Delhi Jal Board contract to build and operate a 17 MGD wastewater treatment plant at Mitraon, including sludge dewatering, pumping stations, and related piping. The order was classified in the range of ₹100 crore to ₹250 crore , or about USD 12 million to USD 29 million.

• April 2026: VINCI won a €192 million contract to upgrade Prague’s main wastewater treatment plant. The project includes rebuilding and refurbishing settling tanks and refitting facilities with new water treatment technologies, with work expected to start in October 2026 and continue for 43 months .

Report Scope