More ongoing municipal waste water treatment issues with discharge into Baltimore County's Back Creek (I think that is considered Baltimore County, but it is Baltimore City's waste and responsibility, regardless).
From WTOP New and Maryland Matters
A nicely written human interest story from Maryland Matters about this issue:
Pollution crisis at the water plant
“There needs to be signage warning the public that the area is known to have unsafe levels of bacteria and to avoid contact with the water, particularly during the 48 hours after a rain.”"