What is a "sanitary sewer overflow? (SSO)?
A “sanitary sewer overflow” is defined as a discharge to ground or surface water from the sanitary sewer system at any point upstream of the treatment facility. Temporary storage and conveyance facilities (such as wet wells, regulated impoundments, tanks, high lines, etc.) may be part of a sanitary sewer system and discharges to these facilities are not considered sanitary sewer overflows, provided that the waste is fully contained within these temporary storage/conveyance facilities. Sanitary sewer overflow is also defined in State Water Resources Control Board (State Water Board) Order No. 2006-0003-DWQ,
Statewide General Waste Discharge Requirements for Sanitary Sewer Systems, found at

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1. What is FOG?
2. What does FOG do, why is it bad?
3. What is a "sanitary sewer overflow? (SSO)?
4. What causes a sanitary sewer overflow?
5. What is the content on sanitary sewage?
6. What is the impact from a Sanitary Sewer Overflow?
7. What can residents and businesses do to reduce FOG and prevent sanitary sewer overflows (SSO)?