Heavy rains caused several sanitary sewers overflow in Fort Worth Wednesday, with a discharge into Lake Arlington. 

The overflows are caused by rainwater entering sewer pipes not designed to carry rainwater.

Arlington Water Utilities Director Julie Hunt says such a discharge is no threat to drinking water.

"This overflow does not pose any danger to Arlington's drinking water supply," she said. "We continue to monitor the water quality in Lake Arlington to ensure that it is safe before being treated."

The City of Fort Worth has notified the City of Arlington and the Texas Commission on Environmental Quality of the overflow. The Texas Commission on Environmental Quality requires wastewater system operators to notify the news media and public officials when large discharges occur from the sanitary sewer collection system.