Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
What is the minimum angle that self cleaning tube settlers must be placed?
2.
Turbidity particles will settle more quickly and uniformly in a sedimentation basin when there is?
3.
What is used as part of a sedimentation basin to allow a controlled flow of the supernatant to be collected and directed to the filter beds?
4.
The hydrologic cycles create what two primary sources of water?
5.
A sedimentation basin with mechanical sludge removal equipment should be drained and inspected?
6.
The actions levels for lead and copper are?
8.
Most totalizer meters at treatment plants are commonly
9.
Which is the normal sequence of solids removal processing following flash mixing in a conventional water treatment plant?
10.
What organism can escape coagulation and then pass through a granular filter?
11.
What type of filtration is permitted under the Surface Water Treatment Rule?
12.
What occurs in raw water as the level of ammonia decreases?
13.
If a water system collects at least 40 samples per month for total coliform analysis, no more than 20% of samples can come back positive.
14.
Where do Enteropathogenic organisms in water supplies originate?
15.
What form is Giardia most infectious?
16.
The scattering of light by the particles in finished water is from the turbidity caused by
17.
What is the only MCL that varies with the temperature?
18.
What water quality indicator should be considered in a lake de-stratification program?
19.
What adverse effects does the secondary contaminant manganese have?
20.
When the temperature of raw surface water drops significantly the flocculator paddle speed should be?
21.
How often should the solids concentration be determined in solid contact basins with fairly constant water quality parameters?
22.
What is the most important reason to reduce turbidity?
23.
A common chemical added to boost alkalinity is?
24.
Which is the strongest disinfectant?
25.
What was created to have uniform standards in Water Treatment?
