Batesville, MS
June 29, 2017
Pre-Test
Circle the correct answer.
- If your sample is positive for total coliform, you must take repeat samples within:
- Immediately
- 24 hours
- 30 hours
- 48 hours
- The maximum residual disinfectant level (MRDL) for chorine or chloramines is ___ mg/L.
- 1.0
- 5.0
- 0.0
- 4.0
- ___% of all waterborne disease originates from distribution system issues.
- 10
- 20
- 30
- 50
- All of the following are correct sample collection steps except:
- Refrigerate or ice the samples
- Assemble Sampling Supplies
- Open cold water tap and immediately collect sample
- Adjust flow to about the width of a pencil
- All of the following are solutions to dead ends in a distribution system, except:
- Pipe Loops
- Flushing program
- Flushing valves
- Increasing chlorine residual
- There are ____ steps to an effective flushing program.
- Three
- Four
- Five
- Six
- Following a main break, the 4-step process to disinfecting pipe is:
- Flush the line to remove particulates
- Chlorinate
- Flush to remove chlorinated water
- ______
- Notify the state
- Flush again
- Refill and test for coliform
- Wait 24 hours before resuming service
8. The action level of lead and copper are:
- 1.3 mg/L for lead, 0.015 mg/L for copper
- 0.015 mg/L for lead, 1.3 mg/L for copper
- 0.015 mg/L for both lead and copper
- 0.010 mg/L for lead, 1.0 for copper
9. Which would not meet the definition of a Tier 1 sampling site
- Single family dwelling
- Multi-family dwelling
- If lead service lines (50% of the sites)
- Copper pipe and lead solder after 1982 and before 1986
11. Which would not be effective for corrosion control.
- Raising the pH
- Adding alkalinity
- Adding a corrosion inhibitor
- Adding aeration
12. Water systems are required to
- Replace lead service lines
- Monitor lead at the customer’s tap
- Sample schools and other public buildings
- Sample hospitals and other sensitive populations