Welcome to the 50 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
How do you respond to a consumer who contacts you while you are repairing a water main?
2.
How often should pump bearings be re-greased?
3.
Pipe strength is expressed in?
4.
Spontaneous combustion can occur when chlorine is mixed with?
5.
What parts on a centrifugal pump restricts flow between the impeller discharge and suction areas?
6.
The minimum required free chlorine residual anywhere in the water distribution system is?
7.
What type of map should not overlap each other?
8.
An onsite sodium hypochlorite generation system creates liquid chlorine by combining?
9.
Compressive fittings used with copper or plastic tubing seal by using?
10.
What is the purpose of sodium thiosulfate in a water sample bottle?
11.
Milky water that clears in time from the bottom up is a possible indication of?
12.
What does a, "Hot Bacti" refer to?
14.
When a bac-T sample is positive, repeat samples must be taken
15.
If there is a large crack in a water main and the pressure in the distribution system drops to 0 psi, what may occur?
16.
On a brand new pump, when should the first oil change be done?
17.
An underground geological water bearing formation is?
18.
What type of joint for connecting water pipes has the disadvantage of having a groove that weakens the pipe wall?
19.
Water taste and odor complaints can come from
20.
Dry barrel fire hydrants are used in what type of environment?
21.
The arrangement of water pumps in parallel is typically used to?
22.
Water contaminated with Haloacetic Acids (haa5) may cause?
23.
The most effective means of reducing atmospheric hazards in a confined space is?
24.
A reaction of certain organic compounds and free chlorine can form?
25.
What is the purpose of a vacuum regulator?
26.
Packing glands on a pump should always?
27.
What is the odor detection limit for chlorine gas?
28.
What is the term for water samples collected at regular intervals and combined in equal volume with each other?
29.
A trench should generally be no more than how many feet wider than the diameter of the water main?
30.
Water tanks storing treated water should be?
31.
What type of water distribution system configuration generally has smaller mains and terminates as dead ends?
32.
What corrosion inhibitor is most effective in control of lead in a distribution system?
33.
Notification to the public of a Tier III violation is done
34.
When did Congress enact the Safe Drinking Water Act?
35.
Uncombined chlorine that remains in the water after chlorine has been applied and allowed to react is?
36.
Centrifugal force is generated?
37.
Who may sign the confined space permit?
38.
A water source that flows continuously at all times of the year is called?
39.
If a bac-T sample comes back positive, the water supplier needs to?
40.
Aerobic bacteria live?
41.
The amount of power in watts required during a certain time period is?
42.
Coagulation occurs during the first
43.
The minimum cover over a water service in a warm climate is?
44.
What is an example of Tier III violation.
45.
What rule that sets MCL's for harmful chemicals?
46.
What is the maximum contaminant level goal (MCLG) for a known or suspected carcinogen?
47.
Fire fighting will never cause low pressure and backsiphonage in the water distribution system.
48.
How much time does a water utility have to notify of a Tier I violation?
49.
Chlorine is chosen over chloramines because chlorine?
50.
How much larger should the outside diameter be of casing pipe protecting large water mains?
