TEST ASSESSMENTS & QUIZZES
WITH CORRECT SOLUTIONS A+
GRADED
K
C
LO
YC
D
U
ST
, What do water distribution system operators have the responsibility for?
The health and well-being of the community they serve
Frequently the water supplier tries to maintain a specific minimum target __________________
throughput the distribution system.
Water pressure (20 PSI minimum)
All trenches and excavations are unsafe until...
K
Proper shoring, used, and back filled
C
Can the quality of water coming out of the consumer's tap be affected by what happens to the
water as it travels through the consumer's own system?
Yes
LO
Biofilms will grow more easily on materials that supply...
Nutrients
YC
Operators should be required to follow a prepared _________ schedule and document the work
they do
PM (preventative maintenance)
D
A lack of chlorine residual in a distribution system could indicate?
The presence of heavy contamination
U
What is necessary to do when a new well, pump, or screen is completed
Disinfect
ST
The chlorine injection should never be due to causing corrosion problems
On the intake side of the pump
What must be done before excavation can begin?
Location of underground installations (811 locates)
When must a confined space permit be renewed?