ISO 14001 Processes that need to be covered

No, it is not mandatory to use the process approach with ISO 14001, but you can follow the process approach in the way you manage environmental aspects and impacts. For example, I like to draw the process of managing wastes from generation until leaving the organization, or the process of managing water from sourcing to disposal.

If you develop a register of environmental aspects and impacts it may be useful to have a column to identify the source of the aspect, and the source may be a product, a service or within the scope of a quality system process. This way it is easier to see where to act, to improve environmental performance.

You can find more information below:

• Application of the process approach in ISO 14001 implementation - https://advisera.com/14001academy/blog/2017/01/30/application-of-the-process-approach-in-iso-14001-implementation/
• Enroll for free in this course – ISO 14001:2015 Foundations Course - https://advisera.com/training/iso-14001-internal-auditor-course/
• Book – The ISO 14001:2015 Companion - https://advisera.com/books/the-iso-14001-2015-companion/