Questions Flashcards
True/ False
Each utility and, in turn, each operator working for that utility is responsible for the quality of water served to its customers
True
True/False
Drinking water quality standards cover all potential chemicals that could enter a water supply.
False (Doesn’t cover all)
True/False
Coliform bacteria are considered pathogenic organisms
False
Most Coliform bacteria themselves are not pathogenic organisms
True/False
Ground waters are more susceptible to contamination than surface waters.
False
Groundwaters are less susceptible to Contamination
Once groundwaters are contaminated, they normally take considerably less time to recover than surface waters.
False
It normally takes a considerable time before they recover
True/False
Improved corrosion control improves biofilm disinfection.
True
True/False
As water mains and reservoirs become older, they require less and less maintenance.
False
they require more and more maintenance
True/False
The lack of trained, qualified, and adequately paid distribution system operators can contribute to water quality degradation in the distribution system.
True
True/False
Distribution system water quality can be adversely affected by improperly constructed or poorly located blowoffs or vacuum/air Relief valves.
True
True/False
In many case the water quality of a storage facility is related to water Clarity and surface debris.
True
Best Answer
What is the primary responsibility of a water treatment plant?
1) To apply a minimum cost mode of operation
2) To keep consumers happy with their water
3) To meet all demands for water at all time
4) To produce a safe and palatable water.
To produce a safe and palatable water
Best Answer
Why have drinking water quality standards been prepared and used?
- To determine capacity of water storage facilities.
- To ensure that pumps deliver water at all times.
- To provide the needed quality control and to ensure quality of the product. 4. To require Laboratories to develop detail procedures.
- To provide the needed quality control and to ensure quality of the product.
Best Answer What are pathogens? 1. Disease-causing organisms. 2. Insect larvae. 3. Iron bacteria. 4. Slime growth.
- Disease-causing organisms.
Best Answer
What is back siphonage?
1. A form of backflow caused by negative below atmospheric pressure in the water supply piping
2. A form of flow created by higher than normal pressures in the water supply piping.
3. A form of reverse flow caused by excessive contamination of the water supply piping.
4. A form of siphonage water out of containers or tanks into the water mains.
- A form of backflow caused by negative (below atmospheric) pressure in the water supply piping
Best Answer
What causes backflow?
- Back pressure that occurs when the user’s water system is at a high higher pressure than the public water system.
- Negative (below atmospheric) pressure in the water supply piping.
- Reverse flow caused by excessive contamination of the water supply piping.
- Siphoning water out of containers or tanks into the water mains.
- Back pressure that occurs when the user’s water system is at a high higher pressure than the public water system.