As this section focuses on Air and Water pollutants, I'll also focus on them. Firstly, Air pollutants were broken down into UV Index, Greenhouse Gases, and ICIS-Air. UV Index is a reference to the level of Ultraviolet Radiation (UV Radiation) that one may be exposed to on any given day. The higher the level, the more harmful it is to us. Greenhouse Gases are gases that absorb Infrared Radiation. They heat or raise the heat of the planet's surface. ICIS-Air is a dataset that "contains compliance and permit data for stationary sources of air pollution regulated by EPA, state and local air pollution agencies." From my understanding, it's the data that agencies receive on air pollution that's from stationary sources. Secondly, Water pollutants were broken down into ICR, PCS/ICIS, and SDWIS. ICR is an acronym for Information Collecture Rule, which requires water systems to collect samples to report microbial and disinfection byproducts. PCS/ICIS is also an acronym. PCS stands for Permit Compliance System, while ICIS stands for Integrated Compliance Information System. These are databases that collect information on which companies have been issued permits to discharge wastewater into rivers. Finally, SDWIS is an acronym for Safe Drinking Water Information System. They collect data and information about public water systems and their violations of EPA's drinking water regulations.