The professional society for life cycle assessment

ACLCA Code of Ethics


Environmental Life Cycle Assessment (LCA) is a comprehensive yardstick of the environmental performance of goods and services. It is a powerful tool to influence human behavior and environmental outcomes through management and engineering decisions, public policy and purchasing decisions. The majority of those using the output of a life cycle assessment are not in a position to verify every element of the LCA. Life Cycle Assessment professionals, those performing, providing life cycle data, and developing life cycle tools and models therefore have great responsibility to provide unbiased, accurate and transparent data and analyses to the greatest extent possible. In doing so they use the work of their hands and minds to build a more sustainable world, and they support the strength and quality of the LCA profession.



The American Center for Life Cycle Assessment supports adherence to this code of ethics regarding LCAs. All members of the American Center for Life Cycle Assessment therefore make the following commitments:

  • To make maximum use of national and international standards, particularly the ISO 14040 series standards, and U.S. federal FTC guidelines for claims when conducting an LCA;
  • To avoid real or perceived conflicts of interest whenever possible, and to disclose them to affected parties when they do exist;
  • To be honest and realistic in stating claims or estimates based on available data;
  • To the greatest extent consistent with retaining confidential business information, to disclose data and estimates in a full and transparent manner;
  • To clearly distinguish between professional extrapolations and value judgments when developing, performing and using life cycle assessments;
  • To improve the understanding among LCA professionals, the general public and decision-makers of Life Cycle Assessment, its appropriate application, and potential consequences;
  • To maintain and improve one's technical competence and to undertake tasks for others only if qualified by training or experience, or after full disclosure of pertinent limitations;
  • To seek, accept, and offer honest criticism of technical work, to acknowledge and correct errors, and to credit properly the contributions of others;
  • To treat fairly all persons regardless of such factors as race, religion, gender and sexual orientation, disability, age, or national origin; and
  •  To assist colleagues and co-workers in their professional development and to support them in following this code of ethics.

On this website

The InLCA series of conferences goes back to 2000, and the presentations from those conferences are posted here indefinitely. You can get the information either by going to a particular year's conference and searching that conference's presentations and abstracts, or you can simply search using the search function above.

Sources of Data

The lack of available life cycle data is a barrier to performing LCA everywhere. Ideally, life cycle data should be accurate, complete and free. The goal of completeness is still a goal rather than a reality, but several governments are working at getting the data to be available and of high quality. The sources listed below have free data. Listing here does not imply anything about data quality or completeness.

U.S. LCI Database

European LCI Database

Inventory of Carbon and Energy (University of Bath)