California Water Distribution Operator Exam, Drinking Water Regulations, Management and Safety: all 31 questions
All questions from the Drinking Water Regulations, Management and Safety section for California Water Distribution Operator Exam, each with the correct answer.
- 4001What is the main purpose of the Safe Drinking Water Act (SDWA)?
- 4002What is a maximum contaminant level (MCL)?
- 4003How do primary and secondary MCLs differ?
- 4004What is the maximum residual disinfectant level (MRDL) for chlorine in the federal rule?
- 4005What is the federal MCL for total trihalomethanes (TTHM)?
- 4006What is the MCL for nitrate as nitrogen?
- 4007Under public notification rules, which event is an acute violation requiring notice within 24 hours?
- 4008How quickly must Tier 2 public notice be given after a violation, in general?
- 4009What document identifies the locations where routine total coliform samples are collected?
- 4010After a routine total coliform positive sample, how many repeat samples are generally collected under the revised total coliform rule?
- 4011What do the regulations require operators to do after a positive E. coli result?
- 4012What is the federal lead action level?
- 4013What is the federal action level for copper at the tap?
- 4014How is a standard lead and copper tap sample collected?
- 4015Where are Stage 2 disinfection byproduct samples generally collected?
- 4016How long after passing the exam can an applicant submit the certification application in California?
- 4017What is the education requirement for taking the D1 exam in California?
- 4018What additional qualification does D2 require for the exam, beyond a high school diploma or GED?
- 4019At what trench depth does Cal/OSHA generally require a protective system such as shoring, sloping or a trench box?
- 4020What is the role of the competent person at an excavation?
- 4021In a trench 4 feet or deeper, how close must a ladder or other exit be to workers?
- 4022How far from the edge of an excavation should spoil piles and equipment be kept?
- 4023What oxygen concentration range is considered safe to enter a confined space?
- 4024Which is an example of a permit-required confined space hazard for water workers?
- 4025What is the purpose of a Safety Data Sheet (SDS)?
- 4026What does California's Injury and Illness Prevention Program (IIPP) require?
- 4027Before digging in California, an operator should contact Underground Service Alert (811). How much notice is typically required?
- 4028Which traffic control practice protects workers at a street excavation?
- 4029Which activity is part of the preventive maintenance program?
- 4030Which of the following should be included in a water system's emergency response plan?
- 4031Why is record keeping of a fire hydrant testing program important?