There are two types of verification procedures in the International EPD® System as one of the steps in developing an EPD:

• EPD verification: verification of LCA-based data, additional environmental information, and other information presented in an EPD based on the General Programme Instructions and a valid reference PCR. EPD verification shall be conducted by an approved individual verifier or an accredited certification body.
• EPD process certification: verification of an internal organisational process aimed to
  develop EPDs based on the General Programme Instructions and valid reference PCRs covered under the scope of certification. EPD process certification shall be conducted by an accredited certification body.

It is possible to have an EPD calculation tool “pre-verified”. This shall not replace the need for EPD
verification according to one of the options above.

The verification process shall be carried out by an approved individual verifier or an accredited certification body with knowledge and experience of the types of products, the industry, and relevant standards of the product covered by the EPD and its geographical scope. Approved individual verifiers and accredited certification bodies are listed here.

See this page for information on the process of checking the competence and qualifications of verifiers