Separate storm and sanitary sewers
The Village is clear that "stormwater and sanitary sewers are two separate systems," and it lists illegal sanitary sewer connections among the discharges it doesn't allow. A floor drain or laundry tub runs to the sanitary sewer, so a sump line emptying into one is the kind of connection the Village doesn't allow. If yours does, the footing drain page covers moving it.
The Village sends sewage to its three water reclamation plants, and homeowners maintain everything on their side: the private sewer lateral, the cleanouts and the plumbing inside the house. Water coming up a basement floor drain is a sewer problem, and a sealed ejector pit is part of how a basement gets protected from it.
Romeoville, Woodridge, Lemont and Homer Glen are on the list too. Sump pump repair in Naperville is just north, Plainfield is to the west, and Joliet is down I-55.