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Posted on: February 21, 2018

Power Outage & Recent Rains Result in Sanitary Sewer Overflow; No Threat to Drinking Water

(February 21, 2018) The City of Frisco experienced sanitary sewer manhole overflows west of the Stewart Creek wastewater treatment plant overnight on Tuesday, February 20 into Wednesday, February 21. This event was the result of recent rains and an undetected, overnight power outage at the plant, which is operated by the North Texas Municipal Water District.

City of Frisco Public Works employees were notified of issues at the plant by NTWMD at 4:45 a.m. on Wednesday. Upon investigation, city employees identified sanitary sewer overflows at three locations west of the plant. The impacted areas are along the creek corridor and not easily accessible by the public. Power was restored to the facility at 5:45 a.m.

This event did not impact the NTMWD potable water system; drinking water delivered by the City of Frisco is safe for human use and consumption.

City staff estimates the volume of the sanitary sewer overflow at approximately two million gallons. This overflow entered Stewart Creek, and was combined with and diluted by stormwater runoff. Because of ongoing wet conditions, staff expects this event to be contained by the end of Wednesday.

“It’s important for people to know that these overflows do not impact our drinking water supply,” said Paul Knippel, Director of Public Works. “The areas will be tested for water quality and we’re working to limit the environmental impact.”

The public should avoid contact with waste material, soil or water in the impacted area.

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