LEVEL 1 WATER DISTRIBUTION FINAL
EXAM PAPER 2026 COMPLETE QUESTIONS
AND VERIFIED SOLUTIONS
⩥ Nitrate may not exceed what concentration when tested yearly for a
groundwater treatment plant ? Answer: 10 mg/L
⩥ The minimum number of total coliform samples that must be collected
per month is based on Wich of the following ? Answer: The population
served by the system
⩥ When a distribution bacteriological sample is positive for a total
coliform the procedure is ? Answer: Repeat the sample and take a
sample 5 connections upstream and downstream to confirm total
coliform
⩥ For lead and copper sample the water must be In the pipeline for at
least? Answer: 6 hours
⩥ What is hydraulic grade line ? Answer: A line to which the water level
would rise in a small ,vertical tube,connected to the pipe
⩥ How often should cathodic protection anodes in your system be
inspected? Answer: Every year
, ⩥ Water pipelines are generally designed to carry water at a velocity
below ? Answer: 2.5b FPS. Feet per second
⩥ Energy use in water systems is defined best by ? Answer: Energy use
varies among systems and an energy inventory study would need to be
conducted to determine relationships
⩥ The minimum recommended separation distance between a water
main and a storm sewer is ? Answer: 6 feet
⩥ Which of the following should be in an organization plan ? Answer:
Identifies clear lines ,defines the divisions of labor ,establishes unity of
command
⩥ If pipelines are not restrained using steel rods concrete thrust blocks
can be used at ? Answer: Every bend and transition
⩥ Engineering Drawings that show the depth of pipe, the pipe location
both vertically and horizontally and the correct distance form a reference
point are known as which of the following Answer: Plan and profile
drawings
⩥ Which are the components of directing staff ? Answer: Motivating &
communicating
EXAM PAPER 2026 COMPLETE QUESTIONS
AND VERIFIED SOLUTIONS
⩥ Nitrate may not exceed what concentration when tested yearly for a
groundwater treatment plant ? Answer: 10 mg/L
⩥ The minimum number of total coliform samples that must be collected
per month is based on Wich of the following ? Answer: The population
served by the system
⩥ When a distribution bacteriological sample is positive for a total
coliform the procedure is ? Answer: Repeat the sample and take a
sample 5 connections upstream and downstream to confirm total
coliform
⩥ For lead and copper sample the water must be In the pipeline for at
least? Answer: 6 hours
⩥ What is hydraulic grade line ? Answer: A line to which the water level
would rise in a small ,vertical tube,connected to the pipe
⩥ How often should cathodic protection anodes in your system be
inspected? Answer: Every year
, ⩥ Water pipelines are generally designed to carry water at a velocity
below ? Answer: 2.5b FPS. Feet per second
⩥ Energy use in water systems is defined best by ? Answer: Energy use
varies among systems and an energy inventory study would need to be
conducted to determine relationships
⩥ The minimum recommended separation distance between a water
main and a storm sewer is ? Answer: 6 feet
⩥ Which of the following should be in an organization plan ? Answer:
Identifies clear lines ,defines the divisions of labor ,establishes unity of
command
⩥ If pipelines are not restrained using steel rods concrete thrust blocks
can be used at ? Answer: Every bend and transition
⩥ Engineering Drawings that show the depth of pipe, the pipe location
both vertically and horizontally and the correct distance form a reference
point are known as which of the following Answer: Plan and profile
drawings
⩥ Which are the components of directing staff ? Answer: Motivating &
communicating
