Glossary term(s): hazardous substance chemical pollution air pollution hazardous waste drinking water sanitation Summary: By 2030, substantially reduce the number of deaths and illnesses from hazardous chemicals and air, water and soil pollution and contamination Explore content Indicator 3.9.1: Mortality rate attributed to household and ambient air pollution Indicator 3.9.2: Mortality rate attributed to unsafe water, unsafe sanitation and lack of hygiene (exposure to unsafe Water, Sanitation and Hygiene for All (WASH) services)