Certification Action Line features questions and answers typical of those appearing in Water Quality Association (WQA) certification examinations. Some answers may not satisfy everyone or every condition.

1. Blue/green stains caused by uniform cuprosolvency copper corrosion is usually the result of(a or b) in water and cold water pitting copper corrosion is the result of (a or b) in water.
a) dissolved oxygen
b) low total dissolved solids or low pH

2. The Safe Drinking Water Act extends federal standards over all water systems with 15 or more service connections or that serve 25 or more people.
a) True
b) False

3. The volume occupied by a pound of water will vary depending upon the pressure.
a) True
b) False

4. Algae are the least important of all causes of taste and odor problems.
a) True
b) False

5. A gallon of water can dissolve three pounds of NaCl salt, but a gallon of saturated brine contains 2.6 pounds of NaCl salt.
a) True
b) False

6. A bad taste and rotten egg smell in water is caused by carbon dioxide.
a) True
b) False

7. How does the size of the filter media affect the filter capacity or run?

8. What effect does turbidity have on disinfection requirements?

9. Name at least three factors that promote the corrosive behavior of water supplies

10. Municipalities using lime-soda softening can assure their customers of zero hardness water.
a) True
b) False