Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
On a brand new pump, when should the first oil change be done?
2.
A ladder is required in all excavations that are greater than?
3.
The EPA recommends water systems using surface water to collect samples for hexavalent chromium (chromium-6) on what basis?
4.
Chlorine applied minus chlorine remaining is?
5.
Uncombined chlorine that remains in the water after chlorine has been applied and allowed to react is?
6.
What provides a profile of hazardous mixtures and substances?
7.
How much time does a water utility have to notify of a Tier I violation?
8.
What is this and what is it used for?
9.
Opening the discharge valve one full turn on a chlorine cylinder will?
10.
If an employee is caught in a room where there is a chlorine gas leak and the employee does not have of on a mask, what should the employee do?
11.
Acid should always be diluted into water.
12.
When employees are working in a trench that is 5' deep or more, that must have an adequate means of exit within 25' like?
13.
When a bac-T sample is positive, repeat samples must be taken
14.
What is the detention time for disinfecting a water storage tank with water mixed with hypochlorites and has a free chlorine of 10 mg/L?
15.
With permit entry confined spaces, who is responsible for terminating entries?
16.
A reaction of certain organic compounds and free chlorine can form?
17.
What contributes to the creation of algae blooms?
18.
Newly installed water mains should be flushed
19.
A revised drawing created and submitted by a contractor after a construction project is finished is?
20.
How long can samples being tested for coliforms be refrigerated before analysis?
21.
The breaking of a buried pipe when it is unevenly supported is called?
22.
What level of threshold odor number (TON) will result in a customer complaint?
23.
What type of meter determines the total flow by multiplying the flow through the meter by a factor?
24.
On a venturi meter the up or down stream pressure is compared to the pressure?
25.
The chlorine room should be constructed so it can only be entered from?
