Waste management in Maryland is a vital industry focused on the responsible collection, recycling, and disposal of waste materials. Companies range from large corporations specializing in biosolids treatment, like Synagro, to smaller firms handling residential and commercial waste. As more regulations protect the environment, innovations in waste processing and recycling methods are increasingly important. The shift towards sustainability, especially with food waste composting, reflects a growing concern for environmental health. Additionally, the industry's expansion into renewable energy solutions showcases its adaptability and resilience amid changing societal demands and climate change considerations.


The waste management sector in Maryland features companies of varying sizes, with some corporate giants like Synagro employing hundreds, while numerous smaller firms focus on specific waste services. Many companies established roots in the 1980s, showcasing decades of growth and evolution. Across headquarter locations in Baltimore, Gaithersburg, and Rockville, these companies offer a wide array of services, including medical waste disposal, organics composting, and hazardous materials management, addressing both public health and environmental sustainability needs.


Continue reading to explore the top waste management companies in Maryland.


Top 19 Waste Management Companies in Maryland


1. Synagro

  • Website: synagro.com
  • Ownership type: Corporate
  • Headquarters: Baltimore, Maryland, United States (USA)
  • Employee distribution: United States (USA) 89%, Canada 10%, Other 1%
  • Latest funding: December 2020
  • Founded year: 1986
  • Headcount: 501-1000
  • LinkedIn: synagro

Synagro, founded in 1986 and headquartered in Baltimore, Maryland, is a waste management company that specializes in biosolids treatment and recycling services. The company provides innovative solutions to municipalities, commercial industries, and agricultural partners, focusing on environmental sustainability and public health. Synagro operates numerous facilities across North America, processing biosolids and organic waste into compost and fertilizer pellets. This not only helps clients manage waste effectively but also contributes to healthier soil and reduced carbon emissions. With a workforce of approximately 558 employees, Synagro has built a reputation for its expertise in biosolids management, having served over 1,000 clients. Their commitment to sustainability is evident in their operations and community outreach efforts, which aim to protect water quality and promote environmental health. Synagro has not reported any recent funding, indicating a stable operational model that relies on its established market presence and client relationships.


2. Potomac Disposal Inc


Potomac Disposal Inc, founded in 1984 and based in Gaithersburg, Maryland, is a private waste management company that specializes in a variety of waste disposal services. The company focuses on residential and commercial waste collection, recycling, and the management of hazardous waste. With a dedicated team of approximately 27 employees, Potomac Disposal Inc caters to a broad clientele, including homeowners, businesses, and government entities. This wide-ranging service provision underscores its commitment to sustainable and compliant waste disposal solutions. The company has maintained its operations for several decades, indicating stability and experience in the waste management industry.


3. Compost Crew

  • Website: compostcrew.com
  • Ownership type: Venture Capital
  • Headquarters: Rockville, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: Series A, $5.5M, April 2022
  • Founded year: 2011
  • Headcount: 51-200
  • LinkedIn: compost-crew

Compost Crew, based in Rockville, Maryland, is a waste management company that specializes in composting services for residential, commercial, and local government clients. Founded in 2011, the company aims to rescue food scraps from landfills and convert them into valuable compost, thereby retaining essential nutrients for the soil. Compost Crew has successfully diverted over 70,000 tons of food waste, serving thousands of customers in the Greater Washington area. Their services include curbside collection of food scraps, educational resources for customers, and partnerships with local farms for compost processing. The company has received $5.5 million in Series A funding in 2022, which supports its mission to promote sustainability and reduce waste. Compost Crew's commitment to environmental responsibility and community involvement positions it as a significant player in the waste management industry.


4. Northwest Environmental


Northwest Environmental, based in Baltimore, Maryland, is a private waste management company founded in 2008. With a workforce of approximately 68 employees, the company specializes in a variety of waste management services, including waste audits, recycling, medical waste disposal, and paper shredding. They cater to a broad clientele, which includes businesses, residential properties, and healthcare facilities, ensuring efficient waste management solutions tailored to specific needs. Northwest Environmental operates nationwide, leveraging its expertise to provide cost-effective and sustainable waste management services. Their commitment to customer satisfaction and eco-friendly practices is evident in their approach to waste management, as they continuously seek ways to enhance sustainability and reduce costs for their clients. The company has built a reputation for reliability and efficiency, servicing over 300,000 units across the country, including numerous senior care facilities and Fortune 500 companies.


5. Bates Trucking Inc

  • Website: batestrucking.com
  • Ownership type: Family Owned
  • Headquarters: Upper Marlboro, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1961
  • Headcount: 11-50
  • LinkedIn: bates-trucking-inc

Bates Trucking & Trash Removal, Inc. is a waste management company based in Upper Marlboro, Maryland, with a history dating back to 1961. As a family-owned business, Bates Trucking has built a reputation for providing comprehensive trash and recycling services tailored to the needs of residential and commercial customers. Their service offerings include regular trash pickup, bulk trash collection, and specialized recycling services, all designed to promote environmentally responsible disposal practices. The company operates a fleet of over 90 trucks and has expanded its reach to cover areas in Maryland, Washington D.C., and Virginia. Bates Trucking is known for its commitment to customer service and its innovative approach to waste management, utilizing modern technology to enhance operational efficiency. Their focus on sustainability is evident in their recycling initiatives, which aim to reduce landfill waste and promote the repurposing of materials. With a dedicated team and a strong local presence, Bates Trucking continues to play a significant role in the waste management industry.


6. Cockey's Enterprises, Inc.

  • Website: cockeys.com
  • Ownership type: Family Owned
  • Headquarters: Baltimore, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1947
  • Headcount: 51-200
  • LinkedIn: cockey%27s-enterprises-inc.

Cockey's Enterprises, Inc. is a family-owned waste management company based in Baltimore, Maryland, founded in 1947 by Elmer Cockey. Initially starting with a single pickup truck, the company has grown significantly over the decades, now operating a fleet of 95 trucks. Cockey's offers comprehensive waste collection services, including residential trash, recycling, and yard waste removal, as well as commercial waste solutions tailored to meet the needs of businesses. The company prides itself on its commitment to customer satisfaction and safety, ensuring reliable service for both individual consumers and commercial clients. With a focus on the Baltimore community, Cockey's has built a reputation for prompt and courteous service, maintaining strong relationships with its customers over four generations. The company continues to adapt and expand its services to meet the evolving needs of the community it serves.


7. WB Waste Solutions, LLC

  • Website: wbwaste.com
  • Ownership type: Private
  • Headquarters: Hyattsville, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2010
  • Headcount: 51-200
  • LinkedIn: wb-waste-solutions-llc

WB Waste Solutions, LLC, based in Hyattsville, Maryland, is a private waste management company that has been operational since 2010. The firm specializes in comprehensive waste collection and recycling services tailored for businesses, government entities, and residential clients across Maryland, Virginia, and Washington, D.C. With a workforce of approximately 42 employees, WB Waste operates several transfer stations and a construction and demolition (C&D) landfill, emphasizing environmentally responsible waste disposal and recycling practices. The company is minority-owned and has built a reputation for reliable service and innovative solutions in waste management. Their operations include a material recovery facility and a focus on meeting LEED requirements for clients, showcasing their commitment to sustainability. WB Waste's leadership team brings extensive industry experience, further solidifying their position in the market.


8. Bioenergy Devco

  • Website: bioenergydevco.com
  • Ownership type: Private Equity
  • Headquarters: Annapolis, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: $30.0M, March 2023
  • Founded year: 2016
  • Headcount: 51-200
  • LinkedIn: bioenergydevco

Bioenergy Devco, founded in 2016 and based in Annapolis, Maryland, is a private equity-backed company that specializes in renewable energy solutions through anaerobic digestion technology. The firm focuses on converting food waste into renewable natural gas and nutrient-rich soil amendments, catering to municipalities, companies, and utilities. With a global footprint of over 250 facilities, Bioenergy Devco plays a significant role in sustainable waste management. The company has recently secured $30 million in funding as of March 2023, indicating strong investor confidence in its business model and growth potential. By addressing the pressing issues of food waste and greenhouse gas emissions, Bioenergy Devco positions itself as a key player in the renewable energy sector, contributing to a more sustainable future.


9. Northwest Refuse Service


Northwest Refuse Service, established in 2007, is a family-owned waste management company based in Baltimore, Maryland. Specializing in dumpster rental services, they cater to both residential and commercial clients, providing tailored waste management solutions that include roll-off containers and specialized waste audits. With a workforce of 27 employees, the company has built a reputation for reliability and customer care. Their operations are primarily focused in Maryland, where they strive to implement eco-conscious practices, ensuring that waste management efforts contribute positively to the environment. Northwest Refuse is committed to community engagement, participating in local clean-up initiatives and educational programs that promote recycling and sustainable waste management practices. Their approach combines efficiency with a strong emphasis on customer satisfaction, making them a trusted partner for waste management needs in the region.


10. AEG Environmental

  • Website: aegenviro.com
  • Ownership type: Private
  • Headquarters: Westminster, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1995
  • Headcount: 11-50
  • LinkedIn: aeg-environmental

AEG Environmental is a private environmental management firm based in Westminster, Maryland, established in 1995. The company specializes in waste management services, providing solutions for both hazardous and non-hazardous waste disposal. Their offerings include emergency response, compliance training, and various field services tailored to meet the needs of industrial, commercial, and governmental clients. AEG Environmental operates with a strong emphasis on sustainability, implementing practices that prioritize recycling and energy recovery over landfill disposal. The firm has a team of certified professionals, including hazardous materials managers and environmental scientists, who are well-equipped to handle complex waste management challenges. Notably, AEG has played significant roles in emergency response efforts, including the cleanup operations following the September 11th attacks and the anthrax bioterrorism incidents, showcasing their expertise in high-pressure situations. With nearly three decades of experience, AEG Environmental continues to serve clients across the Mid-Atlantic region, including Maryland, Washington, D.C., Pennsylvania, Northern Virginia, and Delaware.


11. Environmental Management Services, Inc.


Environmental Management Services, Inc. (EMSI) is a private environmental services company based in Rockville, Maryland, established in 1989. With a workforce of approximately 36 employees, EMSI specializes in waste management solutions, including the disposal of hazardous and non-hazardous waste, recycling, and consulting services. The company caters to various industries, notably healthcare and government, where compliance with environmental regulations is paramount. EMSI's service portfolio includes emergency spill response, regulated medical waste disposal, and training programs tailored to meet the specific needs of their clients. Their commitment to safety and environmental stewardship is evident in their proactive approach to waste minimization and compliance support. EMSI has built a reputation for reliability and customer satisfaction, evidenced by multiple awards recognizing their high levels of service. The company operates entirely within the United States, ensuring localized expertise and responsiveness to client needs.


12. Sunrise Sanitation Services


Sunrise Sanitation Services, based in Oakland, Maryland, has been a fixture in the waste management industry since its inception in 1980. With a workforce of 22 employees, the company provides comprehensive waste collection, recycling, and shredding services tailored to residential, commercial, and municipal customers. Operating across Maryland, West Virginia, and Pennsylvania, Sunrise Sanitation emphasizes sustainability and community involvement in its operations. The company has made significant strides in promoting recycling, having avoided thousands of tons of materials from entering landfills since 2018. Their innovative approach to waste management includes unique offerings like bear-proof trash lockers and on-site storage solutions. Additionally, their partnership with local environmental organizations highlights their commitment to preserving the natural environment. Recognized as the 2016 Recycler of the Year by the West Virginia Department of Environmental Protection, Sunrise Sanitation Services continues to adapt and grow within the industry, ensuring effective waste disposal and recycling solutions for its clients.


13. Inashco

  • Website: inashco.com
  • Ownership type: Private
  • Headquarters: Annapolis, Maryland, United States (USA)
  • Founded year: 2008
  • Headcount: 201-500
  • LinkedIn: inashco

Inashco, also known as Blue Phoenix, is a private waste management company founded in 2008 and based in Annapolis, Maryland. The company specializes in recycling solutions for incinerator bottom ash (IBA), a byproduct of waste-to-energy facilities. By processing IBA, Inashco recovers valuable minerals and metals, transforming what is typically considered waste into high-quality aggregates. Their operations span multiple regions, including the United States, the United Kingdom, Germany, the Netherlands, Australia, and the Middle East. Inashco's commitment to sustainability is evident in their innovative technologies and practices aimed at minimizing environmental impact and promoting the circular economy. They serve a range of clients, including municipalities and construction firms, who seek eco-friendly alternatives to traditional materials. The company has not reported any recent funding activities.


14. Curtis Bay Medical Waste Services

  • Website: curtisbaymws.com
  • Ownership type: Private Equity
  • Headquarters: Baltimore, Maryland, United States (USA)
  • Latest funding: April 2021
  • Founded year: 1991
  • Headcount: 201-500
  • LinkedIn: curtis-bay-energy-lp

Curtis Bay Medical Waste Services, based in Baltimore, Maryland, specializes in the management of medical waste. Founded in 1991, the company has built a reputation for providing a range of services that include the disposal of regulated medical waste, pharmaceutical waste, and hazardous waste. Their clientele primarily consists of healthcare providers, such as hospitals and clinics, as well as businesses that require compliant waste management solutions. Curtis Bay operates mainly in the Gulf Coast and Southeast United States, focusing on small to mid-size generators of medical waste. The company emphasizes sustainable practices and regulatory compliance, which are increasingly important in today's waste management landscape. They also offer additional services like document shredding and data breach reporting, further expanding their service portfolio to meet the needs of their customers.


15. Clym Environmental Services


Clym Environmental Services, LLC, based in Frederick, Maryland, has been a player in the environmental services sector since its founding in 1998. The company specializes in waste management, safety consulting, and training, particularly for the life sciences and healthcare industries. Clym provides a range of services, including the disposal of hazardous, medical, biological, and radioactive waste. Their approach is centered on creating customized solutions that not only ensure compliance with safety regulations but also promote sustainable waste management practices. Clym's team of experienced professionals is dedicated to helping organizations manage hazardous materials effectively, thereby reducing liability and enhancing safety. The company also offers training programs designed to educate staff on proper waste disposal and safety protocols, reinforcing their commitment to industry standards and best practices.


16. MARCOR Environmental, LP

  • Website: marcor.com
  • Ownership type: Private
  • Headquarters: Cockeysville, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1980
  • Headcount: 501-1000
  • LinkedIn: marcor-environmental-lp

MARCOR Environmental, LP, based in Cockeysville, Maryland, has been operational since 1980. The company provides a wide array of environmental services, including facility demolition, environmental remediation, and emergency response. They cater to both businesses and government agencies, showcasing their capability to manage hazardous materials and restore sites following disasters. MARCOR's clientele spans various industries, indicating their adaptability and expertise in handling complex environmental challenges. Their services include not only the removal of hazardous waste but also the decommissioning of facilities, which often involves intricate planning and execution. This positions them as a significant player in the environmental services sector, although their focus extends beyond traditional waste management.


17. Eagle Environmental Services

  • Website: eagleks.com
  • Ownership type: Private
  • Headquarters: Gaithersburg, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2003
  • Headcount: 11-50
  • LinkedIn: eagle-environmental-services

Eagle Environmental Services LLC, based in Wichita, Kansas, has been operational since 2003. This private company focuses on environmental services, particularly in emergency hazmat response, industrial maintenance, waste disposal, mold removal, and bio remediation. With a dedicated team of trained specialists, Eagle Environmental Services caters to businesses and organizations that require professional cleanup and environmental management solutions. They are equipped to handle both hazardous and non-hazardous waste, providing tailored disposal plans to meet specific client needs. The company prides itself on its quick response times and comprehensive service offerings, making it a reliable partner for clients facing environmental challenges. Their commitment to safety and compliance is evident in their operations, which are supported by experienced personnel with extensive backgrounds in emergency services and environmental management.


18. Big Stuff, Inc

  • Website: bigstuffinc.com
  • Ownership type: Private
  • Headquarters: Forestville, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1976
  • Headcount: 11-50
  • LinkedIn: big-stuff-inc

Big Stuff, Inc. is a privately owned waste management company based in Forestville, Maryland, established in 1976. With a workforce of 11 to 50 employees, the company has built a reputation for supplying waste handling and recycling equipment, including balers, compactors, and chutes. They cater to a variety of clients, such as property managers and contractors, providing not only sales but also rental options, installation, and maintenance services. This comprehensive approach helps clients manage waste efficiently and aligns with sustainability goals. The company has over 100 years of combined experience in the industry, showcasing their expertise and commitment to customer service. Big Stuff, Inc. operates primarily in the Washington DC, Maryland, and Virginia areas, and they also have a sister company, RSI Compactors, which focuses on equipment rentals. Their long-standing presence in the market and focus on customer relationships highlight their relevance in the waste management sector.


19. Environ-Civil Engineering Ltd

  • Website: ece-ltd.com
  • Ownership type: Private
  • Headquarters: Columbia, Maryland, United States (USA)
  • Employee distribution: United States (USA) 73%, Taiwan 14%, Iraq 14%
  • Founded year: 1992
  • Headcount: 11-50
  • LinkedIn: environ-civil-engineering-ltd

Environ-Civil Engineering Ltd, based in Columbia, Maryland, is a private engineering consulting firm founded in 1992. With a team of 23 employees, the company focuses on environmental, water, and wastewater management. Their services include construction management, environmental studies, and infrastructure development, catering to municipal, state, and federal clients. ECE has a solid reputation for addressing infrastructure and environmental challenges, particularly in water distribution, wastewater treatment, and solid waste management. They have participated in various projects, including the design and construction of water treatment facilities and environmental remediation efforts. As a Minority Business Enterprise (MBE), ECE is recognized for its commitment to quality and innovation in engineering services, contributing to improved environmental outcomes.



Waste Management Insights: Key Companies in Maryland


CompanyHeadquarterSizeFoundedOwnership
SynagroBaltimore, Maryland, United States (USA)501-10001986Corporate
Potomac Disposal IncGaithersburg, Maryland, United States (USA)51-2001984Private
Compost CrewRockville, Maryland, United States (USA)51-2002011Venture Capital
Northwest EnvironmentalBaltimore, Maryland, United States (USA)11-502008Private
Bates Trucking IncUpper Marlboro, Maryland, United States (USA)11-501961Family Owned
Cockey's Enterprises, Inc.Baltimore, Maryland, United States (USA)51-2001947Family Owned
WB Waste Solutions, LLCHyattsville, Maryland, United States (USA)51-2002010Private
Bioenergy DevcoAnnapolis, Maryland, United States (USA)51-2002016Private Equity
Northwest Refuse ServiceBaltimore, Maryland, United States (USA)11-502007Family Owned
AEG EnvironmentalWestminster, Maryland, United States (USA)11-501995Private
Environmental Management Services, Inc.Rockville, Maryland, United States (USA)11-501989Private
Sunrise Sanitation ServicesOakland, Maryland, United States (USA)11-501980Corporate
InashcoAnnapolis, Maryland, United States (USA)201-5002008Private
Curtis Bay Medical Waste ServicesBaltimore, Maryland, United States (USA)201-5001991Private Equity
Clym Environmental ServicesFrederick, Maryland, United States (USA)11-501998Private
MARCOR Environmental, LPCockeysville, Maryland, United States (USA)501-10001980Private
Eagle Environmental ServicesGaithersburg, Maryland, United States (USA)11-502003Private
Big Stuff, IncForestville, Maryland, United States (USA)11-501976Private
Environ-Civil Engineering LtdColumbia, Maryland, United States (USA)11-501992Private


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