Welcome to your Water Treatment Practice exam!
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What term describes the chemical capacity of water to neutralize acids?

1 out of 51

What should be the sample volume when testing for total coliform bacteria?

2 out of 51

What is the major health risk of nitrates?

3 out of 51

The secondary standard for iron recommends that the concentration not exceed?

4 out of 51

Monitoring and control equipment often communicate with the SCADA system via?

5 out of 51

According to the EPA, sedimentation is based on a theoretical detention time of?

6 out of 51

For public water systems using surface water and groundwater under the influence of surface water, turbidity must be monitored at least?

7 out of 51

Four-log removal for viruses is?

8 out of 51

An increase in which of the following causes the chlorine demand to increase?

9 out of 51

The Total Coliform Rule is based first on?

10 out of 51

Sodium thiosulfate is used to?

11 out of 51

What is the causative organism for cholera?

12 out of 51

Fusible plugs on chlorine cylinders are designed to melt at approximately?

13 out of 51

Daily consumption of gaseous chlorine may be checked by____________

14 out of 51

Small gaseous chlorine leaks in and around a chlorinator can be detected by the use of commercial strength?

15 out of 51

The proper emergency repair kit for a ton chlorine cylinder is an__________

16 out of 51

Water system security is whose responsibility?

17 out of 51

The secondary contaminant limit for fluoride is?

18 out of 51

An operator hears a pinging sound coming from the pump. What is the probable cause?

19 out of 51

The component of a centrifugal pump sometimes installed on the end of the suction pipe in order to hold prime is the?

20 out of 51

When taking a routine Bac-T sample, the sampler should also check what?

21 out of 51

Lead and Copper are both based on?

22 out of 51

What are the two main causes of hardness in water?

23 out of 51

What device measures the flow rate of gases?

24 out of 51

What is the most common method used in labs to test for Total Coliform and E coli?

25 out of 51

Coagulation occurs during the first?

26 out of 51

What precipitate is formed in alum coagulation?

27 out of 51

Records for bacteriological analyses should be kept for a minimum of?

28 out of 51

Which of the following chemicals is not listed as a trihalomethane?

29 out of 51

pH is a measure of?

30 out of 51

What effect will algae in a reservoir have on dissolved oxygen (DO)?

31 out of 51

The amount of water in a water-bearing formation depends on the?

32 out of 51

A filter should be backwashed when it has?

33 out of 51

One volume of liquid chlorine gas will expand at room temperature and pressure, to occupy how many volumes of gas?

34 out of 51

Surface water systems must treat, at a minimum for?

35 out of 51

What metals are most likely to leach from household plumbing and cause a health hazard?

36 out of 51

What laboratory device sterilizes laboratory apparatus and microbial media by using pressurized steam?

37 out of 51

Records on turbidity analysis should be kept for a minimum of?

38 out of 51

The filter rate and backwash rate of each filter shall be determined and recorded once each__________

39 out of 51

The culture media used in the presumptive test is of _____________

40 out of 51

Fish eyes are _____________

41 out of 51

Water may be aerated by several methods, almost all of which involve_____________

42 out of 51

All chlorine cylinders are required to contain at least one fusible metal safety device (plug), how many does a 1-ton cylinder have?

43 out of 51

The detention time usually required in a conventional straight-flow sedimentation basin is _______ h.

44 out of 51

Air binding is a condition that may occur as a result of _________

45 out of 51

A program for the control of algae should be instituted__________

46 out of 51

With the coming of winter, the water temperature drops. A likely operational problem at a filtration plant with coagulation is ___________

47 out of 51

A fluoride saturator____________

48 out of 51

The most desirable place to feed activated carbon in a lime-soda ash softening plant is_________

49 out of 51

Activated alumina is used effectively for the removal of_____________

50 out of 51

What state do you live in?

51 out of 51


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