Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
What effect will caustic soda (NaOH)have on water?
2.
What is true about heterotrophic bacteria?
3.
The monitoring program that checks for Benzene (Leaking Underground Storage Tank) is checking for what kind of chemical contaminant?
4.
A grout seal should be?
5.
Pure water can be found?
6.
Notification to the public of a Tier III violation is done
7.
An organic particle that is stabilized by attracting a layer of water molecules to its surface is known as a?
8.
Why do operators monitor a filter's operation time, headloss and effluent turbidity level?
9.
What process would be most effective for the destruction of heterotrophic bacteria?
10.
Potassium permanganate and manganese greensand are sometimes used to?
11.
Acid rain is caused by
12.
What conventional treatment step is eliminated by direct filtration?
13.
What is the sticky mat and fine sand of suspended matter that forms on the surface of a sand filter?
14.
A connection between a potable water system and a non potable water system is?
15.
What is the sample size for lead and copper analysis?
16.
In what form is Iron soluble in water?
18.
Why do mud balls and hard spots develop in high rate gravity filters during the summer months?
19.
What is the main purpose for adding coagulant chemicals to raw water?
20.
If adequate surface area and detention time is provided in the sedimentation basin, what would the expected solids removal efficiency level be?
21.
What is the MCL for HAA5s?
22.
Trihalomethanes (THM's) are primarily a concern in?
23.
Operators working at a treatment plant should only use self contained breathing apparatus equipment that has been approved by what agency?
24.
When pumping from Well #1 the static level of Well #2 drops. What causes this?
25.
Where does most of the carbon dioxide in groundwater originate from?
