The New Castle County Department of Public Works on Wednesday a break in a sewer main that allowed wastewater to spill into the Nonesuch Creek and Christina River.
The overflow occurred when the main ruptured near 419 Old Airport Road in New Castle.
The wastewater spill was reported to the Delaware Department of Natural Resources and Environmental Control on Wednesday, March 23, but wasn’t announced until Thursday afternoon.
The New Castle County Department of Public Works worked through the night to stop the spill and repair the 36-inch line.
The crew was able to close a valve to stop the leak. The repair of the line was completed around noon on Thursday.
DNREC Division of Water and New Castle County wastewater management staff are assessing the creek and river to see how the are of the spill was affected. Water was sampled upstream and downstream in both waterways.
The break was caused by a failed weld on a 24-inch air release stack.
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