Welcome to the Water Distribution Operator Practice Test.
Choose the best possible answer to the question.
1.
What is a part of the well construction that is used to protect the aquifer, that is space between the drill hole and the well's protective casing?
2.
Where are the sampling points for required sampling of organic (except for THM's) in a community water system?
3.
A split case pump has three impellers. What type of multi stage pump is that?
4.
Milky water that clears in time from the bottom up is a possible indication of?
5.
What is an example of Tier III violation.
6.
The amount of energy in feet required to overcome resistance to flow in a pipe is called?
7.
A ladder is required in all excavations that are greater than?
8.
Newly installed water mains should be flushed
10.
What type of meter determines the total flow by multiplying the flow through the meter by a factor?
11.
When using screw jacks to install shoring material within a trench, the jacks should always be installed?
12.
Where ground frost is expected, how far away from any wall should the riser pipes be installed in a meter pit?
13.
What is a primary indicator of bearing failure on a water pump?
14.
What is the MCL for coliform bacteria?
15.
Head loss in a water distribution system depends on
16.
The pulling or stretching of a water pipe without breaking is known as its?
17.
What is the unit of measurement used to express velocity in a water pipe?
18.
Class B fire involves?
19.
Venturi meters are used for?
20.
The water level below the normal level that persists after a well pump has been off for a period of time is?
21.
If an operator has a problem achieving adequate disinfection, a possible cause is?
22.
When working in a confined space the oxygen level should never drop below?
23.
At what time of the day is the age of the water stored in the distribution system tanks the lowest?
24.
When did Congress enact the Safe Drinking Water Act?
25.
The discharge rate of a piston type pump is?
