Why does the City of Coronado have separate sanitary sewer and storm drain systems?

Sanitary sewer systems and storm drain systems are distinct and must be kept separate. Everything that goes into the sanitary sewer system - from toilets, sinks, and laundry water - is sent to the Point Loma Wastewater Treatment Plant to be treated and discharged into the local receiving waters. The storm drain system helps prevent flooding by transporting water away from developed areas. The City's storm drains typically carry untreated rainwater from the City's streets and release it into the bay or ocean.

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1. Why does the City of Coronado have separate sanitary sewer and storm drain systems?
2. Why is rainwater released untreated?
3. Why can't storm drain water be sent to Point Loma to be treated?
4. What does the City do to limit pollutants in storm water runoff?
5. What else does the City do to keep our ocean and bay clean year-round?
6. Why is there a flooding issue in the Country Club Estates area? What makes it different?
7. What has the City done to deal with the minor flooding in Country Club Estates?
8. Besides the City, who monitors the storm drain system?
9. What safeguards do our sewer and storm water systems have to prevent failures?
10. What can residents do to help keep our waterways clean?