Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
What causes water to turn red?
2.
One of the steps taken to determine the threshold odor number is?
3.
What does it mean if there are sand boils on the surfaces of rapid sand filters during backwash?
4.
What changes does an operator need to make when there are issues with floc formation?
5.
The most accurate chlorine residual measurement would be taken with?
6.
What does it mean when a filter is ripening?
7.
What percentage of the earth's surface is covered in water?
8.
Why is it important to reduce turbidity?
9.
The actions levels for lead and copper are?
10.
What is the maximum feed rate when adding fluoride to drinking water?
11.
A common mistake operators make in regards to flocculation unit is excessive flocculation time.
12.
What is the primary drawback for facilities that use ultra violet light to disinfect water?
13.
The fluoride injection point should be located after water has received complete treatment.
14.
The advantage of using oxidant ozone is that it?
15.
What advantage over Aluminum Sulfate does Ferric Sulfate have?
16.
What does the saturation point of calcium carbonate primarily depend on?
17.
In pounds, how much ammonia is contained in a 1 ton cylinder that is full?
18.
If a filter is operating at a normal flow rate, its ability to trap flocculated particles is suspension is a function of?
19.
What conditions in a gravity filter will be produced when there is a larger particle size and less dense anthracite media?
20.
What will cause reverse osmosis membranes to compact faster?
21.
What oxidant has a potential of producing ClO3 by products?
22.
Which process helps remove contaminants in water by causing them to cling to the surface of certain filter grains?
23.
A connection between a potable water system and a non potable water system is?
24.
How often should the fluoride concentration be measured in treated water?
25.
Which is not considered to be a waterborne disease?
