A check of where the main sewer line is and lateral records can help you determine if the structure is connected to the house. A customer can obtain this information by calling engineering at (909)453-6175 or in person at 397 Chandler Place.
If there is no sewer main adjacent to the property, the property is most likely not connected to the sewer system and is on septic.
If a sewer main is adjacent to the property and lateral records are found, the property may be connected. The only way to be sure the property is connected is to have a reputable plumbing contractor preform a dye test for the property owner. The City does not provide this service.