Radon:
www.radonisreal.org
www.epa.gov/radon
www.radonleaders.org

Asbestos:
www.asbestos.com/exposure/home
www.cpsc.gov/safety-education/safety-guides/home/asbestos-home

Carbon Monoxide:
www.cdc.gov/co/faqs.htm
www.health.state.mn.us/communities/environment/air/toxins/index
www.epa.gov/indoor-air-quality-iaq/carbon-monoxides-impact-indoor-air-quality

Mold:
www.cdc.gov/mold/
www.healthline.com/health/mold-in-house

Fire Safety:
www.nfsc.org
www.redcross.org/get-help/how-to-prepare-for-emergencies/types-of-emergencies/fire

Lead Based Paint:
www.deq.utah.gov/air-quality/lead-based-paint-program
www.fsa.usda.gov/Internet/FSA_File/pfflinyhbrochure.pdf
www.epa.gov/lead/protect-your-family-sources-lead

ASHI Standards of practice
Electrical Code (NEC)
Plumbing Code ( NPC)