Mississippi Department of Environmental Quality; require to evaluate toxic air pollutants and revise air quality standards.

HB 1162 requires Mississippi's Department of Environmental Quality (MDEQ) to identify up to five toxic air pollutants most likely to harm infants and children, review existing controls for them within two years, and prepare reports on new regulations for unregulated pollutants within three years. It mandates MDEQ to annually evaluate at least 15 toxic pollutants, update its list by 2027, and adopt new control measures to reduce emissions. The bill also requires public reporting of fence-line monitoring data for "covered facilities" and public input on proposed regulations. The bill died in committee on February 3, 2026, and did not become law.