A storm drain
is a system that conveys storm and surface waters and drainage, defined as any flow occurring during or following any form of natural precipitation and resulting therefrom. The City of Ypsilanti is responsible for maintenance on all storm drains located within the city's jurisdiction.
A sewer drain
is a system that carries industrial or domestic wastes from dwellings, commercial buildings, industrial facilities, and institutions, which is contributed into or permitted to enter the sewage works operated by the YCUA.
YCUA is responsible for maintenance on all sewer drain systems.