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Environmental health is the branch of public health that is concerned with those aspects of human health and disease that are determined by factors in the environment. It also refers to the theory and practice of assessing and controlling factors in the environment that can potentially affect health.

Environmental health includes such concerns as:

  • Food safety
  • Recreational water illness prevention, including from swimming pools, spas and ocean and freshwater bathing places
  • Liquid waste disposal, including city wastewater treatment plants and on-site waste water disposal systems, such as septic tank systems and chemical toilets
  • Disaster preparedness and response
  • Air quality, including both ambient outdoor air and indoor air quality, which also comprises concerns about environmental tobacco smoke
  • Toxic chemical exposure whether in consumer products, housing, workplaces, air, water or soil