Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
The pH scale ranges from?
2.
If a water system collects less than 40 samples a month, how many can be coliform positive and the water system still maintain compliance?
3.
Nitrification in the distribution system can best be described as?
4.
The outlet of a forced ventilation system for a chlorinator room she be located?
5.
As the level of phosphates increase in a new water supply, an operator should?
6.
The ion exchange process usually is used to remove what from water?
7.
What would have the least impact on the efficiency of copper sulfate?
8.
Powered activated carbon is usually used to control what?
9.
What gas can cause lung and skin irritation?
10.
If a body of water has high salinity and is warm, it will generally be high in dissolved oxygen.
11.
Waterborne diseases like typhoid and cholera are caused by?
12.
When must a water system collect annual samples if the water system has been determined to be reliable by the State and consistently below the MCL level for organic compounds?
13.
What is the purpose of body feed in the operation of a diatomaceous earth filter?
14.
According to the Surface Water Treatment Rule, multiple barrier treatment is defined as?
15.
If ammonia vapor is passed over a chlorine leak from a cylinder valve, the leak is indicate by
16.
What was created to have uniform standards in Water Treatment?
17.
A 50% solution of caustic soda will begin to crystallize if the temperature drops below?
18.
A test(s) used to monitor the disinfection processes would be?
19.
Post sedimentation process, the turbidity of settled water before it is applied to the filters should be kept below?
20.
What process is considered to best to remove color from water in a conventional surface water treatment plant?
21.
Filtration rates vary from what of filter surface area?
22.
Chlorine is chosen over chloramines because chlorine?
23.
Records of chemical analyses should be kept for?
24.
What can immediately occur if newly installed manganese greensand was not skimmed of the fines after backwashing and stratification steps were completed?
25.
What causes an increase in taste and odors when natural waters lack DO?
