Welcome to the 100 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
Why is it important to monitor the speed of a variable speed pump?
2.
What is the highest degree of backlfow protection?
3.
What contributes to the creation of algae blooms?
4.
An underground geological water bearing formation is?
5.
What are the action levels for lead and copper?
6.
Thrust blocks are installed to?
7.
What type of water meter is based on the Doppler effect?
8.
The operating valve for a dry barrel fire hydrant is located?
9.
The lowest pressure point in a pump is?
10.
What is the pneumatic standard range?
11.
What type of water service line pipe material is no longer acceptable for drinking water?
12.
What is the MCL for coliform bacteria?
13.
Who may sign the confined space permit?
14.
Uncombined chlorine that remains in the water after chlorine has been applied and allowed to react is?
15.
What is the measure of a materials opposition to the flow of electrical current?
16.
Public water systems using surface water must continuously monitor the disinfection residual entering the distribution system if serving more than?
18.
The pulling or stretching of a water pipe without breaking is known as its?
19.
On a venturi meter the up or down stream pressure is compared to the pressure?
20.
What is the minimum separation for an Air Gap?
21.
What should be determined first when designing a water pump station?
22.
When disinfecting water mains with tablets what should the concentration be and for how long?
23.
Permit required confined space entry requires a chest or full body harness and a retrieval line.
24.
When responding to a chlorine gas leak, the responder should have a SCBA and a?
25.
What does hydrogen sulfide smell like?
26.
The outlet of a forced ventilation system for a chlorinator room she be located?
27.
Steel pipe can not corrode on the inside.
28.
Minimum required water pressure is?
29.
What is the ideal indicator for pathogens in the drinking water supply?
30.
What test is used to indicate the corrosion or scaling rate?
31.
1 cubic foot of water =
32.
Hydraulics is the study of?
33.
What type of pipe has the lowest normal maximum working pressure?
34.
Critical safeguard(s) for a water distribution system are?
35.
An approved backflow assembly that can be used to prevent backflow and backsiphonage is?
36.
If a body of water has high salinity and is warm, it will generally be high in dissolved oxygen.
37.
One of the reasons to choose chloramines as a disinfectant is in order to
38.
If a dead end water main is more than a 1,000' in length, it is recommended that the main size should be at least what diameter?
39.
What should be installed between a water main and a fire hydrant?
40.
What is the purpose of bypass valves where larger size gate valves are located on the water main?
41.
The fusible metal plugs on chlorine containers are designed to melt at what temperatures?
42.
Water loss between 10-15% is accepted due to leaks, hydrant water theft, failing water meters, and illegal connections.
43.
A red hydrant cap or red fire hydrant means?
44.
What is the MCLG for lead in the drinking water?
45.
Almost all methods used to aerate a reservoir include?
46.
Calcium hypochlorite comes in what form?
47.
When water is being pumped from a well and the water table drops, this is known as?
48.
What valve is the best for regulating flow?
49.
The type of water main pipe most appropriate for river crossings and rugged terrain is?
50.
When is an appropriate time to use a by-pass valve?
51.
If a water pump has sealed bearings, how often should they be lubricated?
52.
The Total Coliform Rule is based on?
53.
Which is a pathogen found in water?
54.
Tier II violations do not pose an immediate threat to public health.
55.
Turbidity in the drinking water system can not exceed?
56.
The C factor, or carrying capacity of a pipe, is often reduced by?
57.
Water tanks storing treated water should be?
58.
A confined space is not designed for continuous occupancy and has limited means of entrance and exit.
59.
When PVC is stacked loose it should be stacked no higher than?
60.
Define the term drawdown?
61.
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?
62.
A split case pump has three impellers. What type of multi stage pump is that?
63.
How high can a perfect vacuum lift water at sea level?
64.
What is an appropriative water right?
65.
The upper layer in a reservoir is the?
66.
Who is the most responsible for your safety while on the job?
67.
What is the National Primary Drinking Water Regulations MCL for total Hexavalent Chromium (Chromium 6)
68.
What is the unit of measurement used to express velocity in a water pipe?
69.
How many Milliliters (ml) are in 1 gallon of water?
70.
What parts on a centrifugal pump restricts flow between the impeller discharge and suction areas?
71.
Atmospheric pressure is?
72.
If a pump loses its prime because the suction line has an air pocket, the operator should?
73.
A water source that flows continuously at all times of the year is called?
74.
Meters that work over a wide range of flows are known as?
75.
Chloramines are used?
76.
Chlorine gas expands?
77.
According to the Surface Water Treatment Rule, water systems serving a population of more than 500 persons must sample the filtered water for turbidity every?
78.
If a water system fails to collect their water distribution system samples, under which public notification tier would the water system fall under?
79.
Hydropneumatic water systems
80.
What type of water distribution system configuration generally has smaller mains and terminates as dead ends?
81.
What chemical can be added to the water system to sequester Iron and Manganese?
82.
What is applied to electrodes placed in the water of a water storage tank?
83.
Where are the sampling points located for required sampling of natural radionuclides in a community water system?
84.
The EPA recommends water systems using surface water to collect samples for hexavalent chromium (chromium-6) on what basis?
85.
What is lake stratification?
86.
What type of meter is usually 2" and under and sensitive to low flow rates?
87.
The number of monthly distribution system chlorines residual tests that are required to be taken are based on?
88.
Where do good public relations start for any water district?
89.
The proper emergency kit for a chlorine tanker is?
90.
What water quality report must the water supplier provide to its consumers every year?
91.
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?
92.
What is the MCLG for coliform bacteria?
93.
Milky water that clears in time from the bottom up is a possible indication of?
94.
The Surface Water Treatment Rule requires that disinfectant residuals be collected at the same location in the distribution system as?
95.
What type of oil should not be used to lubricate bearings because it forms acids as it begins to break down?
96.
Algae in a water reservoir can cause?
97.
A pro of chloramines is?
98.
1 cubic yard = cubic feet?
99.
What should be installed at a dead end water main?
100.
What is the typical strength of calcium hypochlorite?
If there are any question or answer irregularities please email Contact@waternuggets.com Please remember questions are randomized, so specifics would be very helpful.
