The network of all suppliers and their activities that contribute to providing all materials, ingredients and services to the site to support its normal production and operational activities.
The chain starts from the provider of raw materials (eg. mines) or ingredients (eg. farms), through every intermediate supplier to delivery at the site (from its direct suppliers). It includes intermediate processing and production of goods, packaging and transportation. For water stewardship the interest is knowing water use throughout the supply chain, defined as Indirect water use.
See also Value chain