In addition to overwhelming the Point Loma treatment plant, the City's infrastructure could not handle stormwater runoff. The City of Coronado's sewer system was designed and built to transport sewage and does not have the capacity to handle more without risking system failure. Furthermore, the cost of treating the City's sewage is a huge consideration. Last year, Coronado residents paid $2.1 million in treatment costs. Any increases to the system must be shared by users, Coronado residents.