HB 179 creates a statewide toxic chemical emergency alert system requiring immediate notification when manufacturing facilities release chemicals that endanger public health or the environment. The system mandates that state agencies notify residents within 30 minutes using reverse 9-1-1 calls, texts, emails, and social media in both English and Spanish, with options to customize alerts based on location and chemical movement. Residents near affected facilities will receive geographic threat maps, symptom information, and links to updated safety resources through the system. The bill also allows residents to opt out of receiving alerts and requires the alert system to align with existing emergency notification models. This directly affects communities surrounding manufacturing facilities in Texas.