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Sanitary Sewer Overflows

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Properly designed, operated, and maintained sanitary sewer systems are meant to collect and transport all of the sewage that flows into them from a community into a wastewater plant for treatment. Sanitary sewers are the things we flush, pour down drains, etc. There are regulations that say stormwater and sanitary sewers are to be completely separate, but in many older, large communities they run together and can overload a wastewater plant.

We have 810 resources (and counting) on Sanitary Sewers in our Documents Database that provide valuable information on this topic. You can search for documents about the development process for publicly owned treatment works (POTW), benefits of protecting your community from sanitary sewer overflows, how to develop a collection system maintenance program, combined sewer overflow management, and many other useful guides that will help you to deliver safe and clean water to utility customers. 

To access the wealth of knowledge on Sanitary Sewers within our database just select "CATEGORY" in the dropdown then choose "Sanitary Sewers." Once you make that selection, a second dropdown will appear where you can choose "HOST," “TYPE,” or “STATE” to narrow the search even further. If you have a specific search term in mind, use the “Keyword Filter” search bar on the right side of the screen.

This is part of our A-Z for Operators series.

Featured Video: An Inflow and Infiltration Reduction Program in Missouri

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Inflow and infiltration (I/I) can be very costly for small communities, especially those communities with outdated combined wastewater/stormwater systems or collection systems in poor repair. According to this classic National Small Flows Clearinghouse article, I/I problems place additional burdens on these older and/or fragile systems because the extra water that seeps or flows into them can be very damaging, and, in some cases, even cause contamination issues.

This week's featured video describes how the City of Columbia, Missouri is attempting to locate, identify, and correct improper connections and defects that cause these inflow and infiltration problems so that their system capacity improves, and sanitary sewer overflows and basement backups are eliminated.