COLCORD — The red worms found in the city's tap water filtering system have been identified as blood worms, said Erin Hatfield, state Department of Environmental Quality spokeswoman.
“The worms are a Midge fly larva and are nonbiting,” Hatfield said.
There are no known adverse health effects from ingesting blood worms, Hatfield said.
Their discovery prompted Colcord officials to issue a water usage advisory earlier this week.
The water tower was drained and cleaned, and the water was turned back Wednesday. City officials told residents it was OK to use the tap water for bathing and showering, but cautioned against drinking it or using it for food preparation.
“It is uncommon for blood worms to be found in Oklahoman,” Hatfield said. “Most blood worms are found in the southeastern part of the United States, near marina areas.”
This is the second case of blood worms found in associated with drinking water. The other case was 20 to 30 years ago in Drumright, she said.
Hatfield said how the blood worms got into the filtering system remains a mystery. Department of Environmental Quality inspectors plan further testing, she said.
Colcord is in Delaware County about 80 miles east of Tulsa.
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