ISO 14001 is a voluntary standard that organizations can certify to. Integrating it with other management systems standards, most commonly ISO 9001, can further assist in accomplishing organizational goals.The International Organization for Standardization (ISO) defines an environmental management system as “part of the management system used to manage environmental aspects, fulfill compliance obligations, and address risks and opportunities.” The framework in the ISO 14001 standard can be used within a plan-do-check-act (PDCA) approach to continuous improvement.