Welcome to the Water Distribution Operator Practice Test.
Choose the best possible answer to the question.
1.
What type of map provides a clear picture of the entire water distribution system?
2.
What should be installed between a water main and a fire hydrant?
3.
What is the ideal indicator for pathogens in the drinking water supply?
4.
The Total Coliform Rule is based on?
5.
How much chlorine should be used when swabbing new water lines?
6.
What type of meter has no moving parts?
7.
In order for a sample to be considered a, "First Draw Sample" for Lead & Copper testing, the water must?
8.
What type of joint is for steel piping?
9.
The Surface Water Treatment Rule requires that disinfectant residuals be collected at the same location in the distribution system as?
10.
When flushing a water main in response to a water quality complaint, always flush at what velocity?
11.
Centrifugal force is generated?
12.
What does DBP stand for?
13.
Hard water scale is usually caused by?
14.
How many feet must a ladder extend above the trench?
15.
What is a measure of a materials opposition to the flow of electric current?
16.
A pump shafts main function is to?
17.
Force created by a centrifugal pump in the same direction as the shaft travels is known as?
18.
A sample taken that represents the water at particular time and place is?
19.
How are chloramines formed?
20.
The build up of small mounds of corrosion products on the inside of pipes is?
21.
Venturi meters work on a?
22.
Identify which is a Cross-Connection hazard in a drinking water system.
23.
All consumer water meters must test within what range of accuracy?
25.
Water high in nitrates can cause?
