Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
In a thermally stratified reservoir, water located beneath the thermocline may?
2.
What is the sticky mat and fine sand of suspended matter that forms on the surface of a sand filter?
3.
River water is not uniform in quality from hour to hour or day to day.
4.
A change in the water elevation from the normal level to the pumping level is?
5.
Records of chemical analyses should be kept for?
6.
Organic chemistry is concerned with compounds containing what element?
7.
In the MNO-MUG test the presence of E.coli is indicted by?
8.
What was created to have uniform standards in Water Treatment?
9.
Adding CO2 to water will?
10.
What one of these would be the best chemical oxidant to use for controlling THMs formation potential?
11.
What does it mean when a filter is ripening?
12.
In what form is Iron soluble in water?
13.
Water hardness is measured in equivalent amounts of?
14.
What form is the protozoan Giardia Lamblia transmitted in?
15.
The porous material just above the water table that holds small quantities of water by capillary action is called?
16.
Turbidity particles will settle more quickly and uniformly in a sedimentation basin when there is?
17.
What could be the reason for reduced pump flow, deteriorating pump impellers, plugging Needle Valves, and clogging PRV and Surge Control Valves?
18.
Past the breakpoint chlorination point, what percentage of the total chlorine residual should be free chlorine?
19.
Filtration rates vary from what of filter surface area?
20.
The IDLH (immediately dangerous to life and health) value for chlorine is?
21.
At minimum, the Surface Water Treatment Rule requires surface water users to use what two treatment methods?
22.
Where do Enteropathogenic organisms in water supplies originate?
23.
In gram staining, part of the coliform verification is?
24.
How much carbon is approximately lost during the reactivation process for granular activated carbon?
25.
What is the maximum feed rate when adding fluoride to drinking water?
