Frisco found bacteria in town’s water, but no harmful pathogens
August 1, 2014
Frisco announced on Thursday, July 31, that it found coliform bacteria in routine water quality sampling received in May.
Coliform is a broad category of bacteria that is generally not harmful, but coliforms sometimes indicate that other, potentially harmful, bacteria could be present.
The town’s public works department did further testing and didn’t find anything that could be a cause for concern. The town announced the incident as required by law.
Those employees testing the system were drinking the water the whole time, said Vanessa Agee, spokeswoman for the town.
“We don’t want people to feel panicked about this,” she said. “I don’t want people freaking out.”
If anything harmful was found in the water, the town would have notified people immediately, she said.
The town routinely monitors for the presence of contaminants in its drinking water, and on Friday, May 23, one sample tested positive for coliform. Three repeat samples were taken immediately, and of those one tested positive for coliform bacteria.
Public Works Department employees worked on confirming that no harmful bacteria were present throughout the weekend, Agee said.
“They took it insanely seriously,” she said. “Their priority, truly, is to make sure that we have delicious and safe water.”
Two days later, the Frisco Water Department flushed the water distribution system. Five samples were taken and tested, and those results were all negative for coliform bacteria, meaning no presence of contaminants.
Later independent testing did not find the presence of any bacteria of greater concern, such as fecal coliform or E. coli.
The Frisco Water Department continues to sample system-wide for coliform bacteria per Colorado Department of Public Health and Environment requirements and no further tests have indicated the presence of coliform. In June and July, the Frisco Water Department took ten samples and all the samples tested negative for coliform.
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