ISO (International Organization for Standardization) is a voluntary worldwide federation of national standards setting bodies composed of members from various national standards organizations (ISO member bodies). They create international standards, services, and technology such as food safety, agriculture, and healthcare, with the most well-known being for Quality, ISO 9000.
ISO 14001 is the standard for Environmental Management. Certification to the standard ensures international standards are adhered to for minimizing or elimination an organization's adverse effects to air, water, or land; applicable environmental regulations, laws, and requirements are complied with; continuous improvement to the organization's Environmental Management System. When you hire a company that is ISO certified, you know you are getting a world-class organization.