AWWA ABC Water Distribution Grades 1 & 2
Study online at https://quizlet.com/_hqhla7
1. Which agency sets legal limits on the concentration levels of harmful conta-
minants in potable water distributed to customers?: US Environmental Protection Agency
2. The number of monthly distributions system bacteriologiacal samples re-
quired is: Based on the population served
3. What is the maximum contaminant level for total trihalomethanes (TTHM) in
the united States?: 0.080 mg/L
4. Under the Surface Water Treatment Rule, disinfection residuals must be
collected at the same location in the distribution system as: coliform samples
5. Iron can cause "red water" and thus customer complaints when its concen-
tration is above its secondary maximum contaminant level of: 0.30 mg/L
6. The goal of the Surface Drinking Water Act is for each ________ to accept
primary enforcement responsibility (primacy) for the operation of the state's
drinking water program.: State
7. What is the objective of Total Coliform Rule?: To promote routine surveillance of distribution
system water quality to search for fecal matter and/or disease-causing bacteria
8. Which agency sets standards on the concentration levels of harmful contam-
inants in drinking water?: EPA
9. Explain the difference between the different tiers of violations. Which tier is
the most serious?: Tier 1 = 24 hours (most severe)
Tier 2= 30 days
Tier 3= 1 year
10. A positive E. Coli test must be reported to the primacy health agency within
what time period?: 24 hours
11. How is the required number of monthly bacteriological samples deter-
mined?: Population served
12. What is the action level for lead in first-draw samples taken from customer
taps?: 0.015 mg/L
13. A water system is designated a community public water system if it serves
how many homes?: 15 or more
14. What authority provides specific water sampling instructions?: The state primacy
agency
1/9
, AWWA ABC Water Distribution Grades 1 & 2
Study online at https://quizlet.com/_hqhla7
15. According to the Lead and Copper Rule, what is the action level for lead?: 0.015
mg/L
16. Head is measured in: Feet
17. A plat is: a map
18. At which time of the day is the age of the water stored in the distribution
system the highest?: Early morning
19. Water mains should primarily be sized based on: adequate fire flow at an appropriate
pressure
20. The most desirable residential pressure ranges from: 50 to 75 psi (345 to 517kPa)
21. Domestic water use includes water that is supplied to residential areas,
____________, and institutional facilities.: commercial districts
22. Riparian doctrine is sometimes called the "rule of: reasonable sharing."
23. During which season is water typically the highest?: summer
24. Of the common types of distribution system, which type is considered least
desirable?: Tree system
25. The velocity of water is calculated as the quantity of water that flows through
a pipe: divided by the cross-sectional area of pipe
26. What is the term for water pressure in a main or in a container that is
measured by a gauge?: Gage pressure
27. In hydraulics, how is head expressed?: ft-pounds per pound
28. What is the term for pressure measured in terms of the height of water ( in
meters or feet)?: Head
29. What are three types of head?: Elevation head
velocity head
pressure head
30. The highest degree of protection for the exterior of a coating steel pipe
is: Cathodic protection
31. The C value is a measure of a pipe wall's: roughness, which retards flow due to friction.
32. Type of joint for ductile iron piping?: Push-on joint
33. What is the term for a sudden repeated increase and decrease in pressure
that continues until dissipated by friction losses?: Water Hammer
2/9
Study online at https://quizlet.com/_hqhla7
1. Which agency sets legal limits on the concentration levels of harmful conta-
minants in potable water distributed to customers?: US Environmental Protection Agency
2. The number of monthly distributions system bacteriologiacal samples re-
quired is: Based on the population served
3. What is the maximum contaminant level for total trihalomethanes (TTHM) in
the united States?: 0.080 mg/L
4. Under the Surface Water Treatment Rule, disinfection residuals must be
collected at the same location in the distribution system as: coliform samples
5. Iron can cause "red water" and thus customer complaints when its concen-
tration is above its secondary maximum contaminant level of: 0.30 mg/L
6. The goal of the Surface Drinking Water Act is for each ________ to accept
primary enforcement responsibility (primacy) for the operation of the state's
drinking water program.: State
7. What is the objective of Total Coliform Rule?: To promote routine surveillance of distribution
system water quality to search for fecal matter and/or disease-causing bacteria
8. Which agency sets standards on the concentration levels of harmful contam-
inants in drinking water?: EPA
9. Explain the difference between the different tiers of violations. Which tier is
the most serious?: Tier 1 = 24 hours (most severe)
Tier 2= 30 days
Tier 3= 1 year
10. A positive E. Coli test must be reported to the primacy health agency within
what time period?: 24 hours
11. How is the required number of monthly bacteriological samples deter-
mined?: Population served
12. What is the action level for lead in first-draw samples taken from customer
taps?: 0.015 mg/L
13. A water system is designated a community public water system if it serves
how many homes?: 15 or more
14. What authority provides specific water sampling instructions?: The state primacy
agency
1/9
, AWWA ABC Water Distribution Grades 1 & 2
Study online at https://quizlet.com/_hqhla7
15. According to the Lead and Copper Rule, what is the action level for lead?: 0.015
mg/L
16. Head is measured in: Feet
17. A plat is: a map
18. At which time of the day is the age of the water stored in the distribution
system the highest?: Early morning
19. Water mains should primarily be sized based on: adequate fire flow at an appropriate
pressure
20. The most desirable residential pressure ranges from: 50 to 75 psi (345 to 517kPa)
21. Domestic water use includes water that is supplied to residential areas,
____________, and institutional facilities.: commercial districts
22. Riparian doctrine is sometimes called the "rule of: reasonable sharing."
23. During which season is water typically the highest?: summer
24. Of the common types of distribution system, which type is considered least
desirable?: Tree system
25. The velocity of water is calculated as the quantity of water that flows through
a pipe: divided by the cross-sectional area of pipe
26. What is the term for water pressure in a main or in a container that is
measured by a gauge?: Gage pressure
27. In hydraulics, how is head expressed?: ft-pounds per pound
28. What is the term for pressure measured in terms of the height of water ( in
meters or feet)?: Head
29. What are three types of head?: Elevation head
velocity head
pressure head
30. The highest degree of protection for the exterior of a coating steel pipe
is: Cathodic protection
31. The C value is a measure of a pipe wall's: roughness, which retards flow due to friction.
32. Type of joint for ductile iron piping?: Push-on joint
33. What is the term for a sudden repeated increase and decrease in pressure
that continues until dissipated by friction losses?: Water Hammer
2/9
