Our Credentials

Tree care industry association Accredited (TCIA)

Zimmerman Tree Service is proud to be Accredited with the Tree Care Industry Association (TCIA), America’s oldest and most respected tree care trade association. We implement TCIA tools and programs to grow and achieve success. Our safety and training programs follow TCIA standards and ensure that our employees are prepared to perform services safely and professionally. TCIA Accreditation is the only program of its kind in the tree care industry. The process evaluates businesses to ensure that professional practices and standards are met in every department and at every level of the company. The 3-year Accreditation achievement demonstrates that Zimmerman Tree Service has undergone an extensive review of practices, as well as a site visit, and adheres to all accreditation standards.

TCIA Certified Treecare Safety Professional (CTSP)

TCIA’s Certified Treecare Safety Professional program is the only safety credentialing program in the industry. It’s designed to address several of the safety challenges that tree care companies face. The program allows one or more key employees at a given company to become certified tree care safety experts, thereby empowering and encouraging a culture of safety within that organization.

International Society of Arboriculture
Certified Arborists on Staff (ISA)

An arborist, by definition, is an individual who is trained in the art and science of planting, caring for, and maintaining individual trees. Zimmerman Tree Service ISA-certified arborists have the knowledge and confidence to provide quality service for your tree care needs. Certified arborists must retain a vast amount of tree care knowledge to match the performance of industry leaders. As certified arborists, our team demonstrates advanced skills with client interaction and ethical conduct. Learn more about why you should hire a certified arborist here.

ISA Tree Risk Assessment Qualified (ISA)

TRAQ is an ISA qualification program that trains arborists how to use the methodologies outlined in the ISA Best Management Practices for Tree Risk Assessment. This qualification promotes the safety of people and property by providing a standardized and systematic process for assessing tree risk.