The spokesperson for Brunswick County says there has been a discharge of 1,000 gallons of untreated wastewater into a salt marsh.
Federal environmental officials spurred North Carolina regulators to reverse course on a policy allowing Duke Energy to drain massive amounts of polluted wastewater from its coal ash dumps directly into the state's rivers and lakes.
Officials say 3.5 million gallons of wastewater has spilled into the Haw River after a break in a line at a treatment plant in Burlington.
Approximately 1,000 gallons of diluted wastewater overflowed into Greenfield Lake Saturday.
Supporters of a bill to allow permits for underground natural gas exploration in North Carolina say the legislation would cause energy companies to consider drilling in the state.
The Cape Fear Public Utility Authority has stopped a sanitary sewer overflow that started at a wastewater treatment plan on River Road Sunday.