| Commercial Fire Sprinkler Inspector | International Code Council |
| Certified Treecare Safety Specialist | Tree Care Industry Association |
| Water-Based Systems - Level III | National Institute for Certification in Engineering Technologies |
| Certified Irrigation Technician | Irrigation Association |
| WaterSense for Irrigation System Installation and Maintenance | Environmental Protection Agency |
| Landscape Industry Certified Technician - Exterior (Turf Maintenance) | National Association of Landscape Professionals |
| Landscape Industry Certified Technician - Exterior (Hardscape Installation) | National Association of Landscape Professionals |
| Certified Grounds Manager | Professional Grounds Management Society |
| Water-Based Systems Layout - IV | National Institute for Certification in Engineering Technologies |
| WaterSense for Irrigation System Designer | Environmental Protection Agency |
| WaterSense for Irrigation System Auditor | Environmental Protection Agency |
| Certified Tree Worker/Tree Climber Specialist | International Society of Arboriculture |
| Landscape Industry Certified Lawn Care Technician | National Association of Landscape Professionals |
| Certified Golf Course Builder | Golf Course Builders Association of America |
| Landscape Industry Certified Lawn Care Technician-National | National Association of Landscape Professionals |
| Landscape Industry Certified Horticultural Technician | National Association of Landscape Professionals |
| Certified Grounds Technician | Professional Grounds Management Society |
| Certified Landscape Irrigation Auditor | Irrigation Association |
| Landscape Industry Certified Technician - Exterior (Softscape Installation) | National Association of Landscape Professionals |
| Landscape Industry Certified Technician - Exterior (Ornamental Maintenance) | National Association of Landscape Professionals |
| Certified Arborist/Utility Specialist | International Society of Arboriculture |
| Certified Arborist Municipal Specialist | International Society of Arboriculture |
| Certified Master Arborist | International Society of Arboriculture |
| Water-Based Fire Protection Systems Layout Level - I | National Institute for Certification in Engineering Technologies |
| Certified Golf Irrigation Auditor | Irrigation Association |
| Landscape Industry Certified Manager | National Association of Landscape Professionals |
| Landscape Industry Certified Technician - Exterior (Irrigation) | National Association of Landscape Professionals |
| Certified Arborist | International Society of Arboriculture |
