• Video
  • Shop
  • Culture
  • Family
  • Wellness
  • Food
  • Living
  • Style
  • Travel
  • News
  • Book Club
  • Newsletter
  • Privacy Policy
  • Your US State Privacy Rights
  • Children's Online Privacy Policy
  • Interest-Based Ads
  • Terms of Use
  • Do Not Sell My Info
  • Contact Us
  • © 2026 ABC News
  • News

Small sample of Texas floodwater contains concerning levels of E. coli bacteria, expert says

3:55
Small sample of Texas floodwater contains E. coli: Expert
ABCNews.com
BySARAH MESSER
August 31, 2017, 1:51 PM

— -- As many parts of southeastern Texas have been inundated with brown murky floodwater left behind by Hurricane Harvey -- now a tropical depression -- experts are warning residents and rescuers about the possible health risks lurking within the deluge of water.

Dr. Terry Gentry, an associate professor at Texas A&M University, examined small samples of both drinking water and floodwater from Cypress, Texas--a community just outside of Houston--at the university's microbiology lab. While the results of the lab tests revealed that the drinking water was safe, Gentry found that the levels of E. coli and coliform bacteria in the floodwater samples raised cause for concern.

"We saw elevated levels of E. coli," Gentry told ABC News. "This indicates the very likely presence of pathogenic bacteria viruses and other organisms that could cause disease in some individuals."

Related Articles

The dangers of contact with floodwaters after Hurricane Harvey, how to reduce health risks

Related Articles

Hurricane Harvey victims: How to help

The E. coli figures Gentry found in the floodwater samples were more than 125 times the amount that the U.S. Environmental Protection Agency recommends being exposed to while swimming, and more than 15 times higher than their standard set for wading within water.

The Harris County Department of Health told ABC News in a statement that "the results in the report would be exactly as we would expect," adding that with the flooding, "the waters in the streets can easily be overrun and contaminated with sewage, trash, and displaced animals, making it dangerous and unsafe."

Dr. Susan Whittier, an associate professor at Columbia University in New York City, told ABC News that rescuers and residents exposed to the floodwaters should be cautious, especially if they had open wounds.

Whittier also advised people to try and stay "clean as much as possible."

Although Whittier recommends disposing of clothing that was exposed to floodwater, the U.S. Center for Disease Control and Prevention says on its website that if you wish to keep clothing contaminated with floodwater it should be washed--separately from uncontaminated clothing--with hot water and detergent.

Up Next in News—

Student dies after tree falls on playground at Massachusetts school

May 5, 2026

American speaks out from cruise ship amid deadly hantavirus outbreak

May 5, 2026

United Airlines plane hits bakery truck during landing

May 4, 2026

Gas prices are up across the country. Here's where you'll find the most expensive -- and cheapest -- gas

May 2, 2026

Shop GMA Favorites

ABC will receive a commission for purchases made through these links.

Sponsored Content by Taboola

The latest lifestyle and entertainment news and inspiration for how to live your best life - all from Good Morning America.
  • Contests
  • Terms of Use
  • Privacy Policy
  • Do Not Sell My Info
  • Children’s Online Privacy Policy
  • Advertise with us
  • Your US State Privacy Rights
  • Interest-Based Ads
  • About Nielsen Measurement
  • Press
  • Feedback
  • Shop FAQs
  • ABC News
  • ABC
  • All Videos
  • All Topics
  • Sitemap

© 2026 ABC News
  • Privacy Policy— 
  • Your US State Privacy Rights— 
  • Children's Online Privacy Policy— 
  • Interest-Based Ads— 
  • Terms of Use— 
  • Do Not Sell My Info— 
  • Contact Us— 

© 2026 ABC News