WISCONSIN DNR MUNICIPAL WATERWORKS
DISTRIBUTION EXAM 2025-2026
State the water quality significance for the following:
Alkalinity - answer-Buffering capacity of the water to
absorb or deposit
State the water quality significance for the following: Iron
Bacteria - answer-Slime, taste, odor, stains
Describe the major components of a distribution system. -
answer-Piping network, storage, pumping station, wells,
hydrants, towers.
Discuss the reasons for metering water. - answer-
Accurate billing, promoting conservation, detecting leaks,
detecting city wide usage.
Define pathogenic and coliform bacteria. - answer-
Pathogenic is microorganisms that can cause disease in a
host.
Coliform: Come back to add this.
,State the water quality significance for the following: pH -
answer-Acidic= Corrosive
Basic= Scaling
State the water quality significance for the following:
Oxygen - answer-Higher Dissolved oxygen improves taste
State the water quality significance for the following:
Manganese - answer-Black Water, tastes, odors
State the water quality significance for the following: Iron -
answer-Brown/red water, stains, odors
State the water quality significance for the following:
Hardness - answer-Calcium deposits, coating of pipes
State the water quality significance for the following:
Natural Organic Matter - answer-Naturally occurring
elements that may interact with disinfectants to form
harmful materials
Define the following storage facilities: Stand Pipes -
answer-used for above ground storage, larger in height
than diameter
, Define the following storage facilities: Reservoirs - answer-
Stores water, can be closed or open surface H2O
Define the following storage facilities: Elevated Tanks -
answer-large storage container that is elevated on a
supporting structure
Describe the functions that elevated water storage serves
in a distribution system - answer-Provides constant
pressure, balances fluctuating daily demand, supply's
water in peak usage, supply in emergencies
Discuss the properties of the following types of pipe:
Ductile Iron - answer-long life, corrosion resistance,
strong, can be thawed electrically
Discuss the properties of the following types of pipe: Cast
Iron - answer-heavy, hard, rigid but brittle, sound
dampening
Discuss the properties of the following types of pipe:
Asbestos Cement - answer-light, rigid, nonconductive
DISTRIBUTION EXAM 2025-2026
State the water quality significance for the following:
Alkalinity - answer-Buffering capacity of the water to
absorb or deposit
State the water quality significance for the following: Iron
Bacteria - answer-Slime, taste, odor, stains
Describe the major components of a distribution system. -
answer-Piping network, storage, pumping station, wells,
hydrants, towers.
Discuss the reasons for metering water. - answer-
Accurate billing, promoting conservation, detecting leaks,
detecting city wide usage.
Define pathogenic and coliform bacteria. - answer-
Pathogenic is microorganisms that can cause disease in a
host.
Coliform: Come back to add this.
,State the water quality significance for the following: pH -
answer-Acidic= Corrosive
Basic= Scaling
State the water quality significance for the following:
Oxygen - answer-Higher Dissolved oxygen improves taste
State the water quality significance for the following:
Manganese - answer-Black Water, tastes, odors
State the water quality significance for the following: Iron -
answer-Brown/red water, stains, odors
State the water quality significance for the following:
Hardness - answer-Calcium deposits, coating of pipes
State the water quality significance for the following:
Natural Organic Matter - answer-Naturally occurring
elements that may interact with disinfectants to form
harmful materials
Define the following storage facilities: Stand Pipes -
answer-used for above ground storage, larger in height
than diameter
, Define the following storage facilities: Reservoirs - answer-
Stores water, can be closed or open surface H2O
Define the following storage facilities: Elevated Tanks -
answer-large storage container that is elevated on a
supporting structure
Describe the functions that elevated water storage serves
in a distribution system - answer-Provides constant
pressure, balances fluctuating daily demand, supply's
water in peak usage, supply in emergencies
Discuss the properties of the following types of pipe:
Ductile Iron - answer-long life, corrosion resistance,
strong, can be thawed electrically
Discuss the properties of the following types of pipe: Cast
Iron - answer-heavy, hard, rigid but brittle, sound
dampening
Discuss the properties of the following types of pipe:
Asbestos Cement - answer-light, rigid, nonconductive
