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Environmental Health


Did You Know? is a weekly feature from the Office for State, Tribal, Local and Territorial Support to inform your prevention activities. We invite you to read, share, and take action!

View the Current Did You Know?

July 28, 2017

  • On average, extreme heat kills more than 600 people in the United States every year.
  • Older adults, children, athletes, outdoor workers, and people with low income or chronic conditions are particularly vulnerable to extreme heat.
  • You can learn the warning signs and symptoms of heat injury and find out what to do to prevent harm from extreme heat.

July 21, 2017

  • The Agency for Toxic Substances and Disease Registry (ATSDR) assessed nearly 950,000 people in 2016 for exposure to toxic substances; 230,000 of them had exposures that were potentially harmful to their health.
  • In 2016, ATSDR responded to 520 requests in 35 states and territories to assess exposure to dangerous substances such as asbestos, lead, mercury, and trichloroethylene (TCE).
  • Through cooperative agreements and petitions, health departments can work together with ATSDR to reduce people’s exposure to toxic substances in the environment.

May 26, 2017

  • Cryptosporidiosis, or Crypto [PDF-307KB], is a recreational water illness that can cause prolonged diarrhea and serious illness—share CDC’s new swimmer hygiene posters and social media images to raise awareness about why people with diarrhea should not swim.
  • Crypto outbreaks linked to swimming have doubled in the United States since 2014, with at least 32 outbreaks in 13 states in 2016.
  • CDC’s CryptoNet can help state and local health departments investigate and control Crypto outbreaks.

February 10, 2017

August 12, 2016

June 10, 2016

May 27, 2016

  • About 1 in 8 routine inspections of public pools and hot tubs lead to immediate closure because of health or safety violations.
  • Serious health violations, like not having enough chlorine and improper pH, can lead to an outbreak of recreational water illnesses.
  • To protect against illness and injury, swimmers should check for these four things before getting into pools, hot tubs, or other places with treated water.

July 24, 2015

July 2, 2015

March 13, 2015

November 21, 2014

July 18, 2014

  • Traffic-related air pollution is highest near major roads. In 2010, 5.0% of Hispanics, 5.4% of Asians/Pacific Islanders, and 5.1% of foreign-born persons lived within 150 meters of a major highway (vs. 3.7% of the overall US population).
  • Exposure to traffic-related air pollution leads to asthma attacks and may lead to onset of childhood asthma, other respiratory symptoms, and cardiovascular disease and death.
  • Improved access to alternative transportation, financial incentives to reduce traffic, diesel retrofitting, and other measures could help reduce exposure to traffic emissions.

May 16, 2014

January 3, 2014

May 17, 2013

December 16, 2011

May 6, 2011

Did You Know?  information and web links are current as of their publication date. They may become outdated over time.

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