Rob Kantner answers your questions:
ISO health / safety / environment? (10/19/05)
Which ISO number regulates Health, Safety and Environment (HSE)?
ISO 14001 is the environmental management standard. ISO does not at present have a standard for safety management, but a commonly used international assessment series for health/safety management is OHSAS 18001. This is written in parallel to and (mostly) in harmony with ISO 9001 and ISO 14001. Hope this helps.