U.S. Waste Water Treatment Market Size & Share Analysis - Emerging Trends, Growth Opportunities, Competitive Landscape, and Forecasts (2025 - 2032)

U.S. Waste Water Treatment Market Emerging Trends & Growth Drivers

Emerging Technologies and Sustainable Practices Are Key Trends

• The adoption of advanced treatment technologies, such as membrane filtration (reverse osmosis, ultrafiltration), advanced oxidation processes (AOPs), and biological treatment (MBR, activated sludge), is rising in the country.
• Digital technologies, including sensors, data analytics, IoT, and AI, provide improved efficiency, enhance monitoring, enable predictive maintenance, and optimize plant operations.
• Due to the water scarcity, there is a rising focus on the reuse and recycling of water, and a need to reduce discharge to natural water bodies and create a circular water economy.
• As per the World Economic Forum, 2.2 million people in the country lack basic plumbing at home and access to running water.
• San Diego is aiming to source over 40% of their water supply from recycled wastewater by 2035.
• Many wastewater utilities emphasize recovering valuable nutrients, such as phosphorus and nitrogen, from wastewater.

Getting Support from Government and Private Sectors Drives Market

• The Clean Water Act (1972) prohibits the discharge of water into natural bodies without proper treatment.
• In February 2024, the U.S. Environmental Protection Agency (EPA) allocated USD 5.8 billion to support wastewater, stormwater, and drinking water infrastructure projects.
• The EPA also announced USD 49 million funding in September 2024 to provide technical assistance to rural, small, and Tribal communities facing wastewater treatment difficulties.
• The U.S. has around 14,748 publicly owned wastewater treatment plants, which collect, treat, and provide disposal services to about 238.2 million people.
• Companies are following international environmental standards, such as ISO 14001, to provide improved wastewater treatment services.
• As per the EPA, 20% of the houses in the country have a septic system, which carries out basic wastewater treatment, but up to 20% of those fail at some point.
• The University of Michigan says that 8.8 billion gallons of untreated sewage was discharged into the state’s waterbodies in 2021.
• Up to 16% of the homes in the U.S. do not have a sewer connection, and their septic tanks discharge 4.4 billion gallons of wastewater underground each day.

U.S. Waste Water Treatment Market Segmentation Analysis

Offering Insights

The equipment category dominates the market with a revenue share of 75% in 2024. This is because it includes large-scale biological treatment, filtration, sludge treatment, disinfection, demineralization, and other pieces of equipment are expensive and widely used in municipal and industrial facilities. A high capital investment is required to build, upgrade, and maintain the infrastructure to effectively handle the wastewater process.

Here are the types of treatment studied in the report:

• Chemicals
  • pH conditioners
  • Coagulants & flocculants
  • Disinfectants & biocides
  • Scale & corrosion inhibitors
  • Antifoam chemicals
• Equipment (Largest Category)
  • Biological treatment
  • Filtration
  • Sludge treatment
  • Disinfection
  • Demineralization
  • Others
• Services (Fastest-Growing Category)
  • Designing & installation
  • Operations
  • Maintenance
  • Others

Water Source Insights

The surface water category accounted for the largest revenue share, of around 70%, in 2024, and this category is further expected to maintain its position during the forecast period. This is because surface water is the primary source for municipal and industrial water management nationwide. The U.S. discharges the majority of the municipal wastewater into rivers, lakes, and reservoirs after undergoing various treatment processes designed to meet national secondary treatment standards. The treatment of surface water is important to remove pollutants, contaminants, and pathogens that arise from various sources, such as agricultural runoff, industrial discharge, and urban stormwater.

The water sources covered in the report are:

• Surface Water (Largest Category)
• Groundwater
• Wastewater Reuse (Fastest-Growing Category)
• Desalination

Process Insights

The secondary category dominates the market with a revenue share of 60% in 2024 due to its effective removal of contaminants that remain in the water after the primary treatment. This dominance is also due to the expansion and upgradation of POTWs in the U.S. Advanced treatment technologies such as membrane bioreactors, sequencing batch reactors, and moving-bed biofilm reactors, are gaining popularity because of their operational efficiency, small footprint, and ability to meet high effluent standards.

The following are the processes studied in the report:

• Primary
• Secondary (Largest Category)
• Tertiary (Fastest-Growing Category)

End User Insights

The municipal wastewater category accounted for the largest category revenue share, of around 65%, in 2024, and this category is further expected to maintain its position during the forecast period. This dominance is because of their extensive scale of infrastructure and the need for continuous upgradation to serve the growing urban and suburban populations. This category handles the majority of the wastewater generated from households, businesses, and other urban sources. The rapid urbanization, population growth, and aging infrastructure necessitate significant investments in municipal treatment facilities.

The end users covered in the report are:

• Municipal Wastewater Treatment (Largest Category)
• Food and Beverage (Fastest-Growing Category)
• Pulp and Paper
• Oil and Gas
• Healthcare
• Poultry and Aquaculture
• Chemical and Petrochemical
• Others

U.S. Waste Water Treatment Market Geographical Analysis

The Southern region is the market leader with 40% revenue due to its high population and significant industrial activity. The Southern region is also witnessing investments in new infrastructure and upgrades to existing facilities to meet environmental regulations and address water scarcity concerns.

Here are the regions covered in the report:

• Northeast
• Midwest
• South (Largest Category)
• West (Fastest-Growing Category)

U.S. Waste Water Treatment Market Competitive Landscape

• The market is fragmented because of the mix of large players and many regional entities that serve municipalities, industrial sites, and residential complexes.
• Companies are constantly developing more-efficient and cost-efficient wastewater treatment solutions.
• This fragmentation is due to their different range of services, such as equipment manufacturing, chemical supply, and operations and maintenance, of municipal, industrial, and commercial users.
• While the market for equipment is somewhat consolidated among a few major companies, that for chemicals is rather fragmented.
• The presence of a huge number of operations & maintenance service providers, which operate under long-term contracts with customers, fragments the market even more.

U.S. Waste Water Treatment Market News

• In February 2025, Godspeed Capital Management LP invested an undisclosed amount in InSite Engineering LLC, to allow the latter to provide wastewater engineering services.
• In May 2023, Xylem Inc. acquired Evoqua Water Technologies Corp. for USD 7.5 billion in stock.