|| Default value
||The amount of water removed from the sewer per second, by pumping it to an external area outside the project.
This attribute can be defined as values over time, using an array of values defining start-time. This allows users to more dynamically define how fast water is removed from the model.
- Water pumped out of a sewer cannot be pumped back once it is in the external area.
- The sewer pump speed may never be negative, as this would conceptually result in water being pumped into the sewer from outside the project area.