Welcome to the 50 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
What is the purpose of bypass valves where larger size gate valves are located on the water main?
2.
Minimum required water pressure is?
3.
Pump rings can be classified as?
4.
If algae in the water source is clogging the filters of the water plant the most probable solution is to?
5.
What water quality report must the water supplier provide to its consumers every year?
6.
What does MCLG stand for?
7.
If a body of water has high salinity and is warm, it will generally be high in dissolved oxygen.
8.
What type of valve is used to control the level in a water tank?
9.
Why would a zinc coating be applied to steel water pipes and water tanks?
10.
If a fire hydrant or cap is painted black this means?
11.
What is atmospheric pressure at sea level?
12.
Chlorine applied minus chlorine remaining is?
13.
The outlet of a forced ventilation system for a chlorinator room she be located?
14.
All water system sampling site plans must be approved by?
15.
Water contaminated with Haloacetic Acids (haa5) may cause?
16.
If two different metals like copper and iron pipe are joined together, this will cause?
17.
Packing glands on a pump should always?
18.
A reaction of certain organic compounds and free chlorine can form?
19.
If sodium hypochlorite comes into contact with the skin or eyes, the area should be flushed with water for at least 15 minutes.
20.
What is the most common problem with a hypochlorinator?
21.
Which of the following type of pipe is most prone to sliding out of a push on joint if it is not firmly in place?
22.
Head loss in a water distribution system depends on
23.
Photosynthesis is a biochemical process in which
24.
A ladder is required in all excavations that are greater than?
25.
Ball and socket joints can provide deflections up to?
26.
Water taste and odor complaints can come from
27.
The depression around the wall of the water surface caused by pumping water from the well is?
28.
Water filters in the water treatment processes are primarily used for removing or reducing?
29.
A pump shafts main function is to?
31.
What type of water service line pipe material is no longer acceptable for drinking water?
32.
The lowest pressure point in a pump is?
33.
A major break in a water main can assist the distribution operator to
34.
If a lane on a road needs to be closed due to an excavation and the speed limit is 25mph, how many cones are required to divert traffic?
35.
Trihalomethanes (THM's) are primarily a concern in?
36.
When did Congress enact the Safe Drinking Water Act?
37.
A public water system that uses surface water or ground water under the influence of surface water and provides filtration treatment is required to report an active violation of the filtered water turbidity standard if any turbidity measurements collected during the month exceeded?
38.
Almost all methods used to aerate a reservoir include?
39.
When responding to a chlorine gas leak, the responder should have a SCBA and a?
40.
Permit required confined space entry requires a chest or full body harness and a retrieval line.
41.
What tier violation does a water supplier have to personally deliver a notice to the door of the public?
42.
How much chlorine should be used when swabbing new water lines?
43.
What type of valve dampens water hammer?
45.
What is an appropriative water right?
46.
If only two rings of packing are used in the stuffing box, the joints should be?
47.
How much larger should the outside diameter be of casing pipe protecting large water mains?
48.
The concentration of residual chlorine which is combined with ammonia and/or organic nitrogen in water as a chloramine and is still able to oxidize organic matter is called?
49.
Newly installed water mains should be flushed
50.
The AWWA recommends that 5/8" water meters be tested every?
