What term is used to describe the water that enters the collection system and in non-polluted?

The sewer lines that receive the flow from all gravity line in the system and convey the wastewater to the WWTP are ____.

When balling a sewer line that contains a great deal of debris and slime, why should a sand trap be used?

In collection system maintenance, what is a pig?

Pressure head is caused by

Which of the following pipe materials is the least susceptible to corrosion by acids that are formed by gases generated in sewers?

When opening a fire hydrant it should always be

Which of the gravity lines in the collection system are the largest and can be considered to be main arteries?

A pump curve shows the pumped flow compared to the

After a SSO what is the most important concern of an operator?