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Water Nuggets || Errorless Answers 100%.

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1. If a water system collects at least 40 samples per month for total coliform analysis, what the is the acceptable percentage of samples that can come back positive? No more than 5% No more than 10% No more than 50% No more than 0.99% correct answers No more than 5% 2. If an operator gets sodium hypochlorite on their skin or in their eyes, immediately flush with water for how long? At least 15 mins 30 seconds 1 min 3 mins correct answers At least 15 mins 3. 2.31 feet of head = .433 psi 1 psi 4.33 psi 1 ft correct answers 1 psi 4. What type of water main pipe has the highest maximum working pressure?

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Water Nuggets || Errorless Answers 100%.


1. If a water system collects at least 40 samples per month for total coliform analysis, what the is
the acceptable percentage of samples that can come back positive?


No more than 5%
No more than 10%
No more than 50%
No more than 0.99% correct answers No more than 5%


2. If an operator gets sodium hypochlorite on their skin or in their eyes, immediately flush with
water for how long?


At least 15 mins
30 seconds
1 min
3 mins correct answers At least 15 mins


3. 2.31 feet of head =


.433 psi
1 psi
4.33 psi
1 ft correct answers 1 psi


4. What type of water main pipe has the highest maximum working pressure?


PVC

, AC
Cement
Ductile correct answers Ductile


What type of pipe joint permits flexible pipe alignment, is inexpensive to manufacture, and is
easy to assemble?


Flange
Mechanical Joint
Push-On Joint
Coupling correct answers Push-On Joint


6. How much chlorine should be used when swabbing new water lines?


1 ounce of dry calcium hypochlorite per 1 gallon of water
2 ounces of dry calcium hypochlorite per 1 gallon of water
3 ounces of dry calcium hypochlorite per 1 gallon of water
5 ounces of dry calcium hypochlorite per 1 gallon of water correct answers 2 ounces of dry
calcium hypochlorite per 1 gallon of water


7. The disinfection power of chlorine goes down as the pH decreases?


True
False correct answers False


8. What type of pipe will gas and oil permeate?


Lead
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  • 1 if a water system collects at least 40 samples
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