Pollution measurement involves assessing the presence and concentration of harmful substances in the environment. This can include air, water, and soil pollutants, which are often measured using specialized instruments and techniques. Common pollutants include carbon dioxide, nitrogen oxides, and heavy metals, which can have detrimental effects on health and ecosystems. Various organizations and agencies, such as the Environmental Protection Agency (EPA), set standards for acceptable pollution levels. Monitoring these levels helps identify pollution sources and track changes over time, enabling effective regulation and public awareness. Accurate pollution measurement is essential for protecting both human health and the environment.