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2. Sanitary sewer overflow - Wikipedia

   en.wikipedia.org/wiki/Sanitary_sewer_overflow

   Causes of sanitary sewer overflows include: Blockage of sewer lines, infiltration/Inflow of excessive stormwater into sewer lines during heavy rainfall, malfunction of pumping station lifts or electrical power failure, broken sewer lines. Prevention of such overflow events involves regular maintenance and timely upgrades of infrastructure.

3. Combined sewer - Wikipedia

   en.wikipedia.org/wiki/Combined_sewer

   Combined sewers can cause serious water pollution problems during combined sewer overflow (CSO) events when combined sewage and surface runoff flows exceed the capacity of the sewage treatment plant, or of the maximum flow rate of the system which transmits the combined sources. In instances where exceptionally high surface runoff occurs (such ...

4. As sewage overflows become more frequent, advocates and ... - AOL

   www.aol.com/sewage-overflows-become-more...

   BOSTON — As sewage overflows become more frequent in Massachusetts, advocates and lawmakers are pushing to reduce the number of combined sewer systems to avoid run-off sewage polluting bodies of ...

5. Infiltration/Inflow - Wikipedia

   en.wikipedia.org/wiki/Infiltration/Inflow

   Excessive infiltration/inflow may cause sanitary sewer overflows during wet weather. High rates of infiltration/inflow may make the sanitary sewer incapable of carrying sewage from the design service area. Sewage may back up into the lowest homes during wet weather, or street manholes may overflow. [9]

6. Climate change is messing with city sewers—and the solutions ...

   www.aol.com/climate-change-messing-city-sewers...

   The city's sewer systems were overwhelmed, ... That's because flooding-related backups that send sewage into waterways, known as combined system overflows, are a violation of the Clean Water Act ...

7. Government breached environmental rules over sewage overflows ...

   www.aol.com/government-breached-environmental...

   The investigation by the OEP did not include overflows at sewage treatment works, where the Environment Agency is currently investigating water companies for potential failures to have sufficient ...