June 2026
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Largest Waste & Environmental Services Public Companies in the US
Benchmark revenue and EBITDA valuation multiples for public comps like
Waste Management, Republic Services, Veralto, Clean Harbors and GFL Environmental.
 | WM, previously known as Waste Management, ranks as the largest integrated provider of traditional solid waste services in the United States, operating 262 active landfill sites and about 339 transfer stations that help with transporting waste efficiently and economically. The company serves residential, commercial, industrial, and medical end markets for waste collection, transfer, and disposal. The company also has an energy business emanating from the beneficial use of landfill gas and is a leading recycler in North America. | $219 | -4% | $88B | $111B | 4.4x | 14.6x | ||
| Republic Services Group is the second-largest waste management company by revenue and provides integrated waste management services to residential, commercial, and industrial customers. With 208 active landfills, 248 transfer stations, and 75 recycling centers, Republic Services has reached $16 billion in annual revenue, focusing on recycling and environmental solutions. The company reports in three segments based on the Western United States (Group 1), Eastern United States (Group 2), and Environmental Solutions across North America (Group 3). Eighty-nine percent of total revenue comes from recycling and waste, with the remaining 11% from Environmental Solutions. | $208 | -16% | $64B | $78B | 4.7x | 14.7x | ||
| Veralto is a diversified industrial firm organized into two segments: water quality, product quality, and innovation. The water quality segment offers water analytics and water treatment solutions, while the product quality and innovation segment offers coding, packaging, and color solutions for consumer packaged goods and pharmaceuticals. Headquartered in Waltham, Massachusetts, the company has around 17,000 employees. Veralto generated approximately $5.5 billion in revenue in 2025. | $85 | -16% | $21B | $22B | 4.0x | 16.0x | ||
| Clean Harbors Inc is an environmental and industrial services provider that provides parts cleaning and related environmental services to commercial, industrial, and automotive customers. Its business segments are Environmental Services and Safety-Kleen Sustainability Solutions. Environmental Services includes waste collection, transportation, treatment, recycling, and disposal, along with industrial maintenance services. Safety-Kleen Sustainability Solutions provides used oil collection and manufactures base oil, vacuum gas oil, and lubricants. The company generates the majority of its revenues from the Environmental Services segment and operates in the United States, with maximum revenue, and Canada. | $287 | +24% | $15B | $18B | 2.9x | 15.0x | ||
| GFL Environmental Inc is an environmental services company. Its offerings include non-hazardous solid waste management, infrastructure, soil remediation, and liquid waste management services. Its solid waste management business line, which generates the majority of the revenue, consists of the collection, transportation, transfer, recycling, and disposal of non-hazardous solid waste. Its Environmental Services business line includes liquid waste and soil remediation. The company's geographical segments are Canada and the United States. The company derives the majority of its revenue from the United States. | $36 | -29% | $13B | $19B | 3.9x | 13.0x | ||
| Zurn Elkay Water Solutions Corp is a growth-oriented, pure-play water management business that designs, procures, manufactures, and markets the broadest sustainable product portfolio of specification-driven water management solutions to improve health, hydration, human safety and the environment. Its product portfolio includes professional grade water safety and control products, flow systems products, hygienic and environmental products, and filtered drinking water products for public and private spaces that deliver superior value to building owners, positively impact the environment and human hygiene and reduce product installation time. | $47 | +30% | $8B | $8B | 4.8x | 18.5x | ||
| Casella Waste Systems Inc is a solid waste removal company, providing resource management services to residential, commercial, municipal, and industrial customers. The company's reportable segments on Geographical basis include Eastern, Western and Mid-Atlantic regions through the Resource solution segment. It generates maximum revenue from the Western region segment. The company's services include Recycling, Collection, Organics, Energy, Landfills, Special Waste as well as Professional Services. | $84 | -28% | $5B | $6B | 3.5x | 15.2x | ||
| CECO Environmental Corp serves the energy, industrial, and other niche markets. The company operates through the Engineered Systems segment that serves the power generation, refinery, water/wastewater, and midstream oil and gas markets, and Industrial Process Solutions segment, which serves the broad industrial air pollution control, beverage can, fluid handling, electric vehicle production, food and beverage, semi-conductor, process filtration, pharmaceutical, petrochemical, wastewater treatment, wood manufacturing, desalination, and aquaculture markets. The majority of revenue is earned from the Engineered Systems Segment. | $81 | +186% | $3B | $3B | 4.1x | 24.4x | ||
| PureCycle Technologies Inc is a Florida-based corporation focused on commercializing a patented dissolution process to physically separate the polymer from other plastics, color, and contaminants (the Technology), originally developed by The Procter & Gamble Company (P&G), for restoring waste polypropylene into resin with near-virgin characteristics, called PureFive resin. PureFive resin represents the family of recycled resin products produced, including ultra-pure resin and other grades used for compounding to meet customer specifications, which has similar properties and applicability for reuse as virgin polypropylene. It has a single operating segment, which encompasses integrated business activities related to the recycling of polypropylene into resins. | $14 | +2% | $3B | $3B | 339.2x | (33.9x) | ||
| Befesa SA provides sustainable services for the recycling of hazardous residues from the Steel & Aluminium industry. It operates in two business segments: Steel dust recycling services & aluminum salt slags recycling services. In the Steel Dust Recycling segment, the company collects & recycles steel dust and other steel residues generated in the production of crude, stainless, and galvanized steel. The Aluminum Salt Slags recycling services are divided into salt sags & secondary aluminum segments. Its secondary aluminum operations include the collection and recycling of aluminum scrap and other aluminum residues. The geographical segments are Spain, Germany, Netherlands, Belgium, Finland, France, etc. | $42 | +30% | $2B | $2B | 1.7x | 8.1x | ||
| Enviri Corp is a market-leading, provider of environmental solutions for industrial and specialty waste streams, and equipment and technology for the rail sector. The company's current operations consist of three divisions: Harsco Environmental, Harsco Rail, and Clean Earth. The company gains its revenue from Harsco Environmental segment. Geographically company operates in USA and International Countries, with majority revenue from USA. | $20 | +127% | $554M | $2B | 1.7x | 62.2x | ||
| Energy Recovery Inc is an engineering-driven technology company. It is engaged in engineering, designing, manufacturing and supplying solutions that make industrial processes more efficient and sustainable. The company operates in three segments, Water, Emerging Technologies and Corporate. It offers energy recovery devices (ERDs) and pumps as well as related products and services to the reverse osmosis desalination market. The company derives a majority of the revenue from the Water segment. Geographically, the company operates in the U.S. and other international countries. | $8 | -35% | $427M | $350M | 2.6x | 9.2x | ||
| Agilyx ASA is a developer of conversion technologies across the value chain intended to offer two molecular recycling product pathways enabling a circular economy for polystyrene and polymethyl methacrylate. The company offers waste sourcing and processing, thereby helping the entire plastic recycling market to convert recycled waste plastics into valuable resources such as oils and chemical substrate products. The company has two reportable segments: Agilyx and Cyclyx. It derives the majority of its revenue from the Cyclyx segment. | $2 | -15% | $297M | $367M | 302.0x | (29.0x) | ||
| Perma-Fix Environmental Services Inc is a provider of both nuclear services and the management of nuclear and mixed waste. The company operates through two segments: The treatment segment offers nuclear, low-level radioactive, Mixed, hazardous and non-hazardous waste treatment, processing and disposal services, and the Services segment which generates the majority of the revenue, provides on-site waste management services to commercial and government customers, technology-based services, construction, logistics, and transportation services among others. | $10 | -3% | $217M | $214M | 3.5x | (24.7x) | ||
| Arq Inc is an environmental technology company principally engaged in the sale of consumable air, water, and soil treatment solutions including activated carbon (AC) and chemical technologies. The company manufactures and sells activated carbon and other chemicals used to capture and remove contaminants for the coal-fired power generation, industrial, municipal water and air, water and soil treatment and remediation markets. Some of the products in its portfolio are Powdered Activated Carbon, Granula Activated Carbon, and Colloidal Carbon Product among others. | $3 | -50% | $114M | $148M | 1.2x | 11.2x | ||
| LanzaTech Global Inc is a carbon management company transforming waste carbon into sustainable fuels, fabrics, packaging, and nutrition. Its goal is to advance a circular economy where carbon is reused rather than wasted, reducing reliance on virgin fossil resources and supporting supply chain resilience. The company operates in North America, Europe, Middle East, Africa (EMEA), Asia, and Australia. | $7 | -74% | $78M | $85M | 1.5x | (1.2x) | ||
| Fuel Tech Inc is an technology provider of boiler optimization, efficiency improvement, and air pollution reduction to utility and industrial customers. The company operates in two segments, Air Pollution Control and Fuel Chem. The Air Pollution Control technology segment includes technologies to reduce NOx emissions in flue gas from boilers, incinerators, furnaces and other stationary combustion sources. The Fuel Chem technology segment uses chemical processes in combination with Computational Fluid Dynamics and Chemical Kinetics Modeling boiler modeling for the control of slagging, fouling, corrosion, opacity and other sulfur trioxide-related issues in furnaces and boilers through the addition of chemicals into the furnace using TIFI Targeted In-Furnace Injection technology. | $1 | -42% | $46M | $25M | 0.9x | (9.2x) | ||
| 374Water Inc offers a technology that transforms wet wastes such as sewage sludge, biosolids, food waste, hazardous and non-hazardous waste, and forever chemicals (e.g., PFAS) into recoverable resources by focusing on waste as a valuable resource for water, energy, and minerals. The company's business activities include manufacturing processes and waste recycling and treatment processes, which currently involve the use, treatment, storage, transfer, handling and/or disposal of hazardous materials, chemicals and wastes. | $3 | -21% | $45M | $46M | 214.3x | (2.3x) | ||
| Quest Resource Holding Corp is a national provider of waste and recycling services to customers from across multiple industry sectors that are typically larger, multi-location businesses. The company creates customer-specific programs and perform the related services for the collection, processing, recycling, disposal, and tracking of waste streams and recyclables. The company's services focus on the waste streams and recyclables from box, grocers, and other specialty retailers; automotive after-market operations such as automotive maintenance, quick lube, dealerships, and collision repair; transportation, logistics, and fleet operators; manufacturing and industrial facilities; multi-family and commercial properties; restaurant chains and food operations, etc. | $1 | -32% | $29M | $94M | 0.4x | 10.1x | ||
| ClearSign Technologies Corp is engaged in providing solutions to some of the pressing productivity, energy efficiency, and pollution problems affecting the energy, oil, and gas production, boiler, and processing industries. It believes that its patented ClearSign Core technology can enhance the performance of combustion systems in a broad range of markets, including the energy (upstream oil production and downstream refining), institutional, commercial, and industrial boiler, chemical, and petrochemical industries. The company offers products that include process burners, boiler burners, flares, and ClearSign Eye. | $4 | +664% | $26M | $19M | 3.6x | (3.3x) | ||
| Global Clean Energy Inc is a waste-to-energy alternative fuels company in Texas. The company focuses on technologies and initiatives that promote environmental stewardship and economic growthThe primary business of the group is developing and marketing proprietary technology in waste-to-energy management and feedstock conversion. The company is planning to develop products with algae as the key ingredient. It plans to sell fertilizer and feed for livestock. | $0 | -- | $21M | $21M | - | - | ||
| Renovare Environmental Inc is a technology services company focused on providing cost-effective solutions that improve environmental outcomes. It provides a cost-effective path to ecological sustainability for private and public organizations. The company solutions include Food Digesters and Cloud-based Analytics. | -- | -- | $4K | $4K | - | - | ||
| Median | $14 | -16% | $491M | $1B | 3.6x | 10.7x |
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