Willard Beach in South Portland was closed Wednesday due to an oil spill, according to the Maine Department of Environmental Protection.
An oily residue on the water was first noticed around a storm water discharge at around 7 p.m. on Tuesday evening.
The Maine DEP, along with the U.S. Coast Guard and the City of Portland have identified the source of the spill, and do not believe that the source will continue to discharge into the body of water.
Clean Harbors Environmental Services are working to clean up the oil spill. This includes collecting any contaminated seaweed in the area, as well as working to clear any oil residue that is in the storm drainage system in order to prevent any further discharge into the water near Willard Beach.
Although people may smell the residual petroleum, the spill does not pose any threat to public health, officials said.
Willard Beach will remain closed on Wednesday, and city officials will determine when to reopen the beach as cleanup efforts progress.