Sustainability measurement is how we measure how responsibly people, companies, and organizations use resources. It looks at how many resources they use (like energy, water, and materials) and how much waste they produce. To measure sustainability, we look at how much of a resource is used or how much waste is produced compared to how much of the resource was available, or how much waste was allowed. The goal is for people, companies, and organizations to reduce the amount of resources they use, and to produce less waste. We want to make sure that resources can be used over and over again and that waste is managed responsibly.