Question 1 of 6
Intermediate

In a drinking system, what temperature should the water in the taps be?

Question 2 of 6
Intermediate

Which method is the most efficient for water disinfection?

Question 3 of 6
Intermediate

Where is Chlorine dioxide injected into the water system?

Question 4 of 6
Intermediate

In which applications are the following four areas important to focus on to avoid legionella bacteria: 1) Water temperature, 2) Tank and pipe sizing, 3)Tank and pipe material, 4)Tank and pipe insulation

Question 5 of 6
Intermediate

Which living organisms in water can Chlorine dioxide kill, besides Legionella pneumophila?

Question 6 of 6
Intermediate

Where does the bacteria Legionella pneumophila live and breed?

Question 6 of 6
Intermediate

Happy with your answers?

Submit your current answers and get the final test result.

Test results

Congratulations. You have passed the test and completed the 2 - Water Disinfection
Sorry. You did not pass the 2 - Water Disinfection test this time
Achieved badges:
How would you rate this course?
1: In a drinking system, what temperature should the water in the taps be?
60°C / 140°F.
You can find the answer here >
1: In a drinking system, what temperature should the water in the taps be?
At least 55°C / 131°F
1: In a drinking system, what temperature should the water in the taps be?
At least 50°C / 122°F
You can find the answer here >
2: Which method is the most efficient for water disinfection?
Ozone
You can find the answer here >
2: Which method is the most efficient for water disinfection?
Thermal treatment
You can find the answer here >
2: Which method is the most efficient for water disinfection?
Chlorine dioxide
3: Where is Chlorine dioxide injected into the water system?
In every container with stagnant warm water
You can find the answer here >
3: Where is Chlorine dioxide injected into the water system?
Where the municipal water main enters the building
3: Where is Chlorine dioxide injected into the water system?
In the water system’s main pump
You can find the answer here >
4: In which applications are the following four areas important to focus on to avoid legionella bacteria: 1) Water temperature, 2) Tank and pipe sizing, 3)Tank and pipe material, 4)Tank and pipe insulation
Water fountains
You can find the answer here >
4: In which applications are the following four areas important to focus on to avoid legionella bacteria: 1) Water temperature, 2) Tank and pipe sizing, 3)Tank and pipe material, 4)Tank and pipe insulation
Rooftop cooling towers
You can find the answer here >
4: In which applications are the following four areas important to focus on to avoid legionella bacteria: 1) Water temperature, 2) Tank and pipe sizing, 3)Tank and pipe material, 4)Tank and pipe insulation
Drinking water systems
5: Which living organisms in water can Chlorine dioxide kill, besides Legionella pneumophila?
Fungi, viruses and algae
5: Which living organisms in water can Chlorine dioxide kill, besides Legionella pneumophila?
Algae
You can find the answer here >
5: Which living organisms in water can Chlorine dioxide kill, besides Legionella pneumophila?
Fungi and algae
You can find the answer here >
6: Where does the bacteria Legionella pneumophila live and breed?
In stagnant warm water
6: Where does the bacteria Legionella pneumophila live and breed?
In warm water without ventilation
You can find the answer here >
6: Where does the bacteria Legionella pneumophila live and breed?
In floating water which is constantly being infected with dirt
You can find the answer here >