Oil Water Separator Market Report 2026

The oil water separator market size has grown strongly in recent years. It will grow from $9.51 billion in 2025 to $9.99 billion in 2026 at a compound annual growth rate (CAGR) of 5.1%. The growth in the historic period can be attributed to stringent environmental discharge regulations, growth of industrial wastewater generation, expansion of oil and gas activities, increasing marine pollution control requirements, rising awareness of water contamination risks.

The oil water separator market size is expected to see strong growth in the next few years. It will grow to $12.18 billion in 2030 at a compound annual growth rate (CAGR) of 5.1%. The growth in the forecast period can be attributed to increasing investments in wastewater treatment infrastructure, growing demand for water reuse solutions, stricter enforcement of marine pollution standards, technological advancements in separator efficiency, expansion of power generation and defense facilities. Major trends in the forecast period include increasing adoption of advanced oil water separation technologies, rising deployment of compact and modular separator systems, growing use of enhanced gravity based separation methods, expansion of oil water separators in marine applications, higher focus on efficient removal of hydrocarbons from wastewater.

The increasing awareness of environmental sustainability is projected to significantly drive the growth of the oil-water separator market in the future. Environmental sustainability refers to the ability to use natural resources to meet present needs without compromising the ability of future generations to meet their own. Oil-water separators are vital for promoting environmental sustainability as they help prevent oil and grease pollution in water bodies. For example, a survey conducted by The Asahi Glass Foundation, a Japan-based non-profit organization, in November 2023, revealed that among 13,500 respondents, the average perceived level of achievement regarding Sustainable Development Goals (SDGs) was 35% in 2023. The average SDG achievement for individuals aged 25 to 69 was 33.9%, while it was 41.1% for those aged 18 to 24. Consequently, the heightened awareness of environmental sustainability is fueling the growth of the oil-water separator market.

Major companies in the oil-water separator market are also concentrating on creating innovative products such as automated centrifugal separation systems to gain a competitive advantage. Alfa Laval AB, a Sweden-based manufacturer, launched PureBilge Compact in February 2023. This compact version of the oily water separator PureBilge is designed to extend its benefits to vessels of all sizes. The PureBilge Compact provides a modular solution for small-segment vessels, integrating an advanced EPC 70 automated control and monitoring system for user-friendly operation.

In November 2023, Siemens AG, a Germany-based automation company, acquired an 18% stake in Siemens Ltd. India from Siemens Energy for $2.29 billion. This acquisition allows Siemens to enhance its portfolio by leveraging Siemens India's expertise in the production of oil-water separators. Siemens Ltd. India specializes in manufacturing oil-water separators.

Major companies operating in the oil water separator market are Alfa Laval AB, ZCL Composites Inc., Filtration Group Industrial, Containment Solutions Inc., Andritz AG, Parker Hannifin Corp., Donaldson Company Inc., Siemens AG, GEA Group AG, Compass Water Solutions Inc., RWO GmbH, WesTech Engineering LLC., Wärtsilä Corporation, HSN-KIKAI-KOGYO Co. Ltd., Parkson Corporation, HydroFlo Tech LLC, Saint Dizier Environment, PS International., Genoil Inc., Kanagawa Kiki Kogyo Co. Ltd., Mahle GmbH, Wartsila Oyj Abp.

Europe was the largest region in the oil-water separator market in 2025. The regions covered in the oil water separator market report are Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, Middle East, Africa. The countries covered in the oil water separator market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

The oil water separator market includes revenues earned by entities by providing services such as conventional gravity separators, parallel plate gravity separators, hydrocyclone water oil separator systems, floating separators. The market value includes the value of related goods sold by the service provider or included within the service offering. Only goods and services traded between entities or sold to end consumers are included.

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).

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.

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