

When it comes to designing, manufacturing, and servicing high-performance medical waste grinders, The Mark-Costello Co. stands at the forefront of innovation and reliability. For decades, we’ve worked closely with hospitals, surgical centers, pharmaceutical labs, dental clinics, and biomedical research facilities across the country, delivering customized shredding systems that meet the rigorous demands of the healthcare sector. Our equipment isn’t just about meeting regulatory requirements—it’s built to enhance workflow, protect employees, and support sustainability initiatives through superior waste management.
Our medical waste systems are engineered specifically for medical environments, with heavy-duty stainless steel construction that resists corrosion and promotes sanitation. We understand that healthcare settings are fast-paced, high-risk, and under tight compliance pressure, which is why our grinders are designed to perform under continuous use while maintaining strict hygiene and safety protocols. Unlike generic shredders, our units feature sealed and enclosed grinding chambers that reduce airborne particles, prevent odor leakage, and minimize the risk of contamination. Each unit comes with safety interlocks and user-friendly controls that ensure ease of use without compromising on protection for staff or maintenance teams.
Beyond construction, our grinders are known for their performance. We provide machines with customizable feed rates, powerful cutting mechanisms, and reliable throughput that allows facilities to process large volumes of waste in less time. Whether you’re grinding red bag waste, contaminated PPE, sharps, tubing, textiles, or other medical disposables, our systems are optimized for speed, reliability, and durability. With our grinders in place, organizations gain greater control over their waste flow, avoiding bottlenecks and unnecessary labor costs. The result is a smoother operation that reduces downtime and ensures waste is processed as soon as it's generated.
Compliance is at the center of everything we do. As regulations evolve, particularly at the state and federal levels, we work directly with facilities to ensure every installation meets or exceeds current standards. From OSHA’s Bloodborne Pathogens Standard to EPA guidelines on infectious waste disposal, our grinders are tested and validated to maintain full legal compliance. For organizations that require advanced documentation or audit trails, we also offer tracking modules that log disposal times, volumes, and operator information—an important asset during inspections or third-party reviews.
But the Mark-Costello advantage doesn’t stop at the product. What makes our service model unique is our end-to-end support. We provide expert consultations to determine the right grinder for your waste streams, install and commission the equipment on-site, and train your staff to operate it with confidence. Once the system is up and running, we back it with a comprehensive maintenance and support program that includes scheduled servicing, replacement parts, blade sharpening, and emergency response. This ongoing partnership helps clients maximize the lifespan of their grinder, avoid unexpected breakdowns, and maintain consistent compliance without worry.
The trust our clients place in us is built on decades of proven performance, hands-on service, and a deep understanding of healthcare waste challenges. When facilities choose The Mark-Costello Co., they aren’t just buying a piece of equipment—they’re investing in a waste solution that improves safety, reduces cost, and supports operational excellence for years to come.

Mark Costello has been a trusted name in waste management for decades, delivering reliable and effective solutions that businesses count on.
Using the latest technology, We ensures that waste management systems are efficient and up to industry standards, from food digesters to compactors.
At Mark Costello,we provides tailored waste management solutions that fit each business’s unique needs, ensuring a smooth integration into existing operations.
Mark Costello is dedicated to helping businesses achieve their sustainability goals by turning waste into valuable resources, supporting a greener future.

Send us a message with your questions or concerns and our team member will contact you. We’d love to hear from you.
Dear Mr. Markle,
I have been working in the Plant Operations of Hospitals for the past 20 years. During that time I have had the responsibility of maintaining various autoclaves for the treatment of biohazardous medical waste.
When I came to Doctors Medical Center a year and a half ago I found myself in charge of maintaining a Mark-Costello Co. autoclave that was nearly eight years old. After my past experience of trying to keep a high vacuum system with consistent problems in operation, I find maintaining the Mark-Costello gravity fed autoclave a pleasure, as there is seldom a malfunction. I attribute this to the fact they have kept the design simple with no need for highly technical maintenance and high dollar repair parts.
As a point of information, the Model we operate is a AS 512 equipped with a unique “pull out drawer” making it easy for the Housekeeping Staff to load. This unit has a capacity of approximately 750 lbs. per cycle.
We expect to keep our Mark-Costello autoclave in operation for another 8 years or longer !
Dear Mr. Markle:
San Ramon regional Medical Center has owned and operated a Model AS46 Mark-Costello Medical Waste Sterilizer for the past eight years. We are pleased with performance of this equipment and have had a fine working relationship with the Mark-Costello Company. The system continues to function well and allows our facility to avoid the liability and high cost of packaging and hauling untreated infectious waste.
We Anticipate several more years of operation from this waste treatment system
Saludos,
La presente es para agradecer sus servicios a nuestra compañia. Su equipo de trabajo ha sido muy atento y diligente en las gestiones realizadas. Estamos muy complacidos con el equipo, el precio y la calidad de sus servicios.
Esperamos seguir contando con una excelente relacion de negocios en un futuro muy cercano.
Greetings,
This letter is to thank you for your services to our company. Your teamwork has been very attentive and diligent in the way it has been carried out. We are very pleased with the teamwork, the price and the quality of your services.
We expect to continue an excellent business relationship with you in the near future.
To whom it may concern,
Pleased with the equipment
We are quite pleased with our Mark-Costello sterilizer. The sterilizer has been working fine for many years. We recently purchased additional equipment from them, and are impressed with their response time and friendly service. We hope to continue a great working relationship with Mark-Costello in the future for additional pieces of equipment.
“It’s been a great relationship with The Mark-Costello Company; they are very dependable to all of our waste handling requirements and have made us aware of the importance of recycling and the upcoming waste handling issues in the future.”
“We have been very pleased with the performance and the cost savings that the trash compactors from The Mark-Costello Company have provided to our school district.”
My name is David E. and I am responsible for a Mark Costello Co. Auto-Clave, at an inflight Kitchen out here in Kona Hawaii, that is overseen by the USDA / Custom and Borders, federal inspectors. (as you can imagine that is a challenge in its self).
The products that Mark Costello Co. is producing are of good quality. The auto – clave that I am responsible for works 24/7, with very few break downs. This is the only unit available in Kona, making daily operation is critical.
It is nice to know that when I call for tech support and parts, the courteous staff always responds promptly. Being out here in the middle of the pacific, that is crucial to our operation.
I would highly recommend Mark Costello Co.
Our equipment is built to handle a variety of regulated medical materials, including items like used needles, IV lines, contaminated plastics, personal protective equipment (PPE), lab debris, and some types of anatomical waste. We advise against processing mercury-containing devices or liquid pharmaceuticals unless additional safety containment measures are in place.
Simply reducing waste in size and appearance does not meet disinfection standards in most jurisdictions. While mechanical processing is a key step, it should typically be paired with sterilization technologies such as steam treatment to ensure all biohazards are neutralized. This combination supports full regulatory compliance and public health safety.
Our systems are engineered to consistently reduce waste into small, manageable particles—generally between 1 and 2 centimeters in size. This makes the material easier to handle, transport, and prepare for final disposal, while also ensuring that it is no longer recognizable.
Safety is a top priority in all of our equipment. Standard features include lockable access points, automatic shutdown mechanisms when panels are opened, dual-hand activation controls to prevent accidental use, and fully enclosed processing chambers. These features are designed to minimize the risk of injury and unauthorized access during use.
We recommend a preventive maintenance schedule of approximately every six months, although high-use environments may require more frequent service. Regular care involves inspecting and sharpening blades, lubricating moving components, and cleaning interior surfaces. Following this schedule ensures continued performance and reduces the risk of downtime.
Yes, our solutions are highly adaptable and can be configured to work alongside other waste management tools such as steam sterilizers, compactors, and storage containers. Whether your facility is retrofitting an existing system or designing a new layout, we’ll help ensure that all components work together efficiently and seamlessly.
