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View Tomko Services Inc's top competitors like Bioremediation Services, Inc., Clean Harbors, and ENVIRO SCIENCES, INC..

Tetra Tech
Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide. With more than 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science® to address the entire water cycle, protect and restore the environment, and design sustainable and resilient infrastructure. Tetra Tech est un chef de file mondial dans les domaines de l'eau, de l'environnement et des infrastructures durables, offrant des services techniques et d'ingénierie de qualité supérieure pour des projets à l'échelle mondiale. Grâce à ses 25 000 employés, Tetra Tech propose des solutions optimales aux problèmes les plus complexes en utilisant la science d’abord pour répondre aux besoins en matière de cycle de l'eau, en protection et restauration de l'environnement ainsi qu’en conception d’infrastructures durables et résilientes.
Pasadena, California, US
Public
$2.8B Revenue
http://www.tetratech.com
27.4K Employees
TTEK Ticker
Clean Harbors
Clean Harbors is North America’s leading provider of environmental and industrial services. The Company serves a diverse customer base, including a majority of Fortune 500 companies. Its customer base spans a number of industries, including chemical, and manufacturing, as well as numerous government agencies. These customers rely on Clean Harbors to deliver a broad range of services such as end-to-end hazardous waste management, emergency spill response, industrial cleaning and maintenance, and recycling services. Through its Safety-Kleen subsidiary, Clean Harbors also is North America’s largest re-refiner and recycler of used oil and a leading provider of parts washers and environmental services to commercial, industrial and automotive customers. Founded in 1980 and based in Massachusetts, Clean Harbors operates throughout the United States, Canada, Mexico and Puerto Rico.
Norwell, Massachusetts, US
Public
$5.8B Revenue
http://www.cleanharbors.com
13.7K Employees
CLH Ticker
Matrix Service
Matrix Service is a subsidiary of Matrix Service Company (NASDAQ: MTRX). Matrix Service provides procurement, fabrication and construction on complex infrastructure in the energy and industrial markets. The Company also performs turnarounds, pre-commissioning, plant services and capital projects. The Company is a leader in the engineering, fabrication, construction and repair of aboveground storage tanks and specialty vessels. About Our Parent Company: Matrix Service Company (Nasdaq: MTRX) is a leading specialty engineering and construction company whose commitment to safety, quality, and integrity has earned its subsidiaries a leadership position in providing infrastructure solutions across multiple end markets. Our work is foundational to helping our energy and industrial clients achieve their objectives, positively impact quality of life through the products they provide, and improve the efficiency and resilience of their critical infrastructure. We pride ourselves on our commitment to our culture and core values, offering an inclusive and respectful work environment, and being certified as a Great Place To Work®. The Company is headquartered in Tulsa, Oklahoma, and has offices throughout the United States and Canada, as well as in Sydney, Australia, and Seoul, South Korea.
Tulsa, Oklahoma, US
Private
$728.2M Revenue
http://www.matrixservice.com/
604 Employees
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
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