Wastewater Treatment Plant Market Report 2025

This report covers market characteristics, size and growth, segmentation, regional and country breakdowns, competitive landscape, market shares, trends and strategies for this market. It traces the market’s historic and forecast market growth by geography.

The wastewater treatment plant market size has grown strongly in recent years. It will grow from $134.46 billion in 2024 to $143.61 billion in 2025 at a compound annual growth rate (CAGR) of 6.8%. The growth in the historic period can be attributed to rising investments in water infrastructure, growing industrialization and expanding industries, rising population and rapid urbanization, implementation of stringent environmental regulations, and global increase in water and sanitation PPPs (Public-Private Partnerships).

The wastewater treatment plant market size is expected to see strong growth in the next few years. It will grow to $178.38 billion in 2029 at a compound annual growth rate (CAGR) of 5.6%. The growth in the forecast period can be attributed to increasing water pollution levels, strict regulations related to industrial emissions, increasing population and urbanization leading to higher demand for clean water, stringent government regulations on wastewater discharge, growing awareness about the need for water conservation and reuse. Major trends in the forecast period include technological advancements, adoption of decentralized and modular wastewater treatment systems, expansion of water reuse and recycling initiatives, biogas production in wastewater treatment plants, wastewater treatment 4.0.

The rise in water pollution levels is expected to drive the expansion of the wastewater treatment plant market in the future. Water pollution occurs when harmful substances contaminate water bodies, posing risks to humans and the environment. Addressing water pollution requires global collaboration to confront this growing challenge and develop solutions such as enhanced water monitoring and wastewater treatment. Wastewater treatment plants play a crucial role in tackling water pollution by managing and treating wastewater to safeguard water quality and promote sustainable water management practices. For example, in 2022, the United Nations reported that 2.2 billion people still lacked access to safely managed drinking water services, while 3.5 billion lacked access to safely managed sanitation services, representing an increase compared to the previous year. Hence, the escalating levels of water pollution are stimulating the growth of the wastewater treatment plant market.

Leading companies in the wastewater treatment plant market are concentrating on introducing advanced and innovative solutions, such as membrane bioreactor (MBR) wastewater treatment plants, to boost their revenues in the market. Membrane Bioreactor (MBR) wastewater treatment plants are advanced systems that integrate a membrane filtration unit with a suspended growth bioreactor, such as an activated sludge process. For instance, in September 2022, Evac Oy, a Finland-based provider of integrated waste, wastewater, and freshwater management systems, unveiled a new mid-size version of the Evac Membrane Bioreactor (MBR) wastewater treatment plant for various vessel types. The innovative Evac MBR Mid-range exceeds current wastewater treatment standards, offering optimal treatment outcomes by filtering up to 99% of microplastic particles and enabling nutrient removal. Its high-efficiency effluent quality allows treated water to be reused or further processed on the vessel. Evac MBR is a crucial component of an advanced wastewater treatment system and one of Evac's Sustainability Spearhead Products. The inclusion of a nutrient removal unit in the system enables vessels to operate in environmentally sensitive areas, effectively cleaning and discharging all wastewater from passengers and crew without risking human health or the marine environment.

In October 2023, BW Group Limited, a US-based maritime company specializing in shipping, floating gas infrastructure, and deep-water oil and gas production, acquired SafBon Water Technology Inc. for an undisclosed sum. The acquisition aims to enhance BW Water's position in the water and wastewater treatment industry, particularly in the Americas, and tap into new markets with desalination capabilities in Asia, integrating SafBon Water Technology into the BW Water brand. SafBon Water Technology Inc. is a US-based company providing advanced water and wastewater treatment systems.

Major companies operating in the wastewater treatment plant market are Hitachi Ltd., Veolia Environnement S.A., Mitsubishi Chemical Aqua Solutions, Larsen & Toubro Limited, Nalco Water India Ltd., Kubota Corporation, Suez Environment S.A., Xylem Inc., Pentair PLC, ITT Corporation, Evoqua Water Technologies Corporation, Fluence Corporation, Thermax Ltd., Triveni Engineering & Industries Ltd., Doshion Veolia Water Solutions Pvt. Ltd., Kemisan Klor-Alkali A.S., Ion Exchange India Ltd., FilterBoxx Inc., Organica Water, Paramount Limited, Bioxica, GE Water And Process Technologies, TMW Technologies, VA Tech Wabag Ltd., ECOfluid Systems Inc., Aquatech International LLC, Danaher Corporation, Doosan Heavy Industries & Construction Co. Ltd., Kurita Water Industries Ltd., Toshiba Water Solutions Private Limited.

Asia-Pacific was the largest region in the wastewater treatment plant market in 2024. It is expected to be the fastest-growing region in the forecast period. The regions covered in the wastewater treatment plant market report are Asia-Pacific, Western Europe, Eastern Europe, North America, South America, Middle East, Africa. The countries covered in the wastewater treatment plant market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

The wastewater treatment plant market consists of revenues earned by entities by providing services such as wastewater collection, monitoring, sludge treatment and disposal, resource recovery, and stormwater management. The market value includes the value of related goods sold by the service provider or included within the service offering. The wastewater treatment plant market also includes sales of screens, pumps, grit chambers, primary clarifiers, aeration tanks, secondary clarifiers, filters, disinfection units, sludge treatment equipment, control systems, and piping with valves. Values in this market are ‘factory gate’ values, that is the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD, unless otherwise specified).

A wastewater treatment plant (WWTP) is a facility designed to receive and process municipal and industrial wastewater, removing contaminants and converting them into effluent suitable for safe discharge back into the environment or reuse for various purposes. These plants primarily aim to safeguard public health and the environment by treating wastewater to an acceptable quality.

The main categories of wastewater treatment plants include effluent, sewage treatment, agriculture, and leachate. Effluent refers to liquid waste or sewage discharged into rivers or the sea. Various technologies, such as physical, biological, chemical, and electrochemical treatment, are utilized, involving processes such as conventional, advanced, membrane, and hybrid treatment. These facilities cater to various end-users, including municipal and industrial wastewater treatment plants.

The wastewater treatment plants market research report is one of a series of new reports that provides wastewater treatment plants market statistics, including wastewater treatment plants industry global market size, regional shares, competitors with a wastewater treatment plants market share, detailed wastewater treatment plants market segments, market trends and opportunities, and any further data you may need to thrive in the wastewater treatment plants industry. This wastewater treatment plants market research report delivers a complete perspective of everything you need, with an in-depth analysis of the current and future scenario of the industry.

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

This product will be delivered within 3-5 business days.