Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
Anaerobic conditions in reservoirs can cause what problem?
2.
In what form is Iron soluble in water?
3.
Viruses are sometimes resistant to disinfection.
4.
A water molecule is made up of ?
5.
The organism that causes Giardiasis
6.
At its endpoint, what color does the oxidant potassium permanganate turn?
7.
What is a universal solvent?
8.
What type of polar bonds are between the hydrogen atoms and the oxygen atom in water?
9.
A sedimentation basin with mechanical sludge removal equipment should be drained and inspected?
10.
The size of Giardia in the trophozoite stage is approximately?
11.
The most favorable condition in raw water for good flocculation with alum is?
12.
When sludge is produced by water drawn from sources with relatively low turbidity it can be?
13.
Coliform bacteria are always?
14.
What device found in labs sterilizes by using pressurized steam?
15.
Never install a new gasket when a chlorine cylinder or container is changed.
16.
A test(s) used to monitor the disinfection processes would be?
17.
What makes chlorine use more advantageous over chloramines?
18.
What chemicals are used to substitute chlorine as pre-oxidants to minimize the formation of disinfection byproducts in a water plant?
19.
If a filter is operating at a normal flow rate, its ability to trap flocculated particles is suspension is a function of?
20.
What would be the most probable solution to control algae in the source water if the algae is clogging the filters in the water plant?
21.
In the MNO-MUG test the presence of E.coli is indicted by?
22.
When natural zeolites are used for softening and they have become exhausted from use, what chemical are they regenerated with?
23.
At minimum, the Surface Water Treatment Rule requires surface water users to use what two treatment methods?
24.
What type of algae would most likely be found in nutrient rich water?
25.
What is the best process for removing turbidity?
