St. Louis Region
MSD is a separate stormwater and sewer layer
Much of St. Louis County uses the Metropolitan St. Louis Sewer District, which is a separate utility layer for wastewater and stormwater questions.
St. Louis County utility questions often include a layer that is not the county government or the city hall. MSD Project Clear says MSD provides wastewater collection and treatment and also operates and maintains separate storm sewer systems serving much of the St. Louis County area.
For a homeowner, that means a sewer or stormwater issue may point to MSD even when the address is in a municipality. It also means stormwater is not just a private drainage complaint. MSD says stormwater can carry pollutants into lakes, creeks, and rivers, and the district helps regulate and improve that system regionally.
References
Where this fits: this note belongs to St. Louis County. See every local note for the county on its page.