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California Water Distribution Exam Preparation Guide
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1. Cheating conse- If caught cheating, you will be asked to leave and banned from future exams;
quences current certification will be revoked.
2. Multiple Choice Each multiple-choice question is worth three points.
Questions
3. Time allowed The time allowed for the exam is three hours.
4. Showing work You must show your work on math problems to receive credit.
5. Surge tanks pur- Surge tanks are used to eliminate water hammer and prevent high-pressure
pose spikes in the system.
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6. Bacteriological The sample collector should ensure the sample bottle is sterile and contains
sample collection sodium thiosulfate to neutralize chlorine.
7. Sample bottle ma- The sample bottle should be made from amber colored glass only.
terial
8. Disinfection Is disinfected with chlorine to meet industry standards.
Method
9. Corporation Stop Most water systems use a corporation stop to shut off the water after the water
meter.
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10. Water Pump Bear- If a water pump has sealed bearings, they should be lubricated as often as the
ing Lubrication manufacturer suggests.
11. Lead and Copper Lead and copper first draw samples are taken at the customer's tap.
Samples
12. Chlorine Gas Prop- Chlorine gas is 2½ times heavier than air, is greenish in color, expands 460
erties times to one, and will cause severe burns inside your lungs if inhaled.
13. Three Phase Motor If you switch two of the incoming electrical lines on a three phase motor, the
Effect motor's rotation would be reversed.
14. Water Main Dis- If new water mains were installed and disinfected with chlorine, you would be
infection Require- required to meet breakpoint disinfection followed by sterilization of the water
ment line.
15. Green Stains on If a customer has green stains on their plumbing fixtures, this home probably
Plumbing has copper pipe that is reacting with aggressive water.
16. Trench Shoring When working in a trench that requires shoring, the shoring should be in-
Regulations stalled in accordance with required regulations and laws.
17. Sodium Hypochlo- An on-site sodium hypochlorite generation system can create liquid chlorine
rite Generation by combining water, sodium chloride and electricity.
18. Backflow Concern Backflow is a concern for water distribution system operators because flow
from a non-potable source could contaminate the distribution system.
19. Chlorine Dose The chlorine dose in a chlorinated water supply consists of the demand minus
Composition the residual.
20. Fusible Plug Re- A distribution operator should change a fusible plug on a 150 lb. chlorine
placement Fre- cylinder annually.
quency
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California Water
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Questions and Answers
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California Water Distribution Exam Preparation Guide
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1. Cheating conse- If caught cheating, you will be asked to leave and banned from future exams;
quences current certification will be revoked.
2. Multiple Choice Each multiple-choice question is worth three points.
Questions
3. Time allowed The time allowed for the exam is three hours.
4. Showing work You must show your work on math problems to receive credit.
5. Surge tanks pur- Surge tanks are used to eliminate water hammer and prevent high-pressure
pose spikes in the system.
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6. Bacteriological The sample collector should ensure the sample bottle is sterile and contains
sample collection sodium thiosulfate to neutralize chlorine.
7. Sample bottle ma- The sample bottle should be made from amber colored glass only.
terial
8. Disinfection Is disinfected with chlorine to meet industry standards.
Method
9. Corporation Stop Most water systems use a corporation stop to shut off the water after the water
meter.
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https://www.stuvia.com/user/edupac
California Water Distribution Exam Preparation Guide
Study online at https://quizlet.com/_hh6mtk
10. Water Pump Bear- If a water pump has sealed bearings, they should be lubricated as often as the
ing Lubrication manufacturer suggests.
11. Lead and Copper Lead and copper first draw samples are taken at the customer's tap.
Samples
12. Chlorine Gas Prop- Chlorine gas is 2½ times heavier than air, is greenish in color, expands 460
erties times to one, and will cause severe burns inside your lungs if inhaled.
13. Three Phase Motor If you switch two of the incoming electrical lines on a three phase motor, the
Effect motor's rotation would be reversed.
14. Water Main Dis- If new water mains were installed and disinfected with chlorine, you would be
infection Require- required to meet breakpoint disinfection followed by sterilization of the water
ment line.
15. Green Stains on If a customer has green stains on their plumbing fixtures, this home probably
Plumbing has copper pipe that is reacting with aggressive water.
16. Trench Shoring When working in a trench that requires shoring, the shoring should be in-
Regulations stalled in accordance with required regulations and laws.
17. Sodium Hypochlo- An on-site sodium hypochlorite generation system can create liquid chlorine
rite Generation by combining water, sodium chloride and electricity.
18. Backflow Concern Backflow is a concern for water distribution system operators because flow
from a non-potable source could contaminate the distribution system.
19. Chlorine Dose The chlorine dose in a chlorinated water supply consists of the demand minus
Composition the residual.
20. Fusible Plug Re- A distribution operator should change a fusible plug on a 150 lb. chlorine
placement Fre- cylinder annually.
quency
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