1
EARHT SCIENCE ILLINOIS CLASS D
WATER LICENSE EXAM
Two Towers are both 125 feet Both will be equal
high, when full, contain
122 feet of water. Tower 1
holds 150,000
gallons. Tower 2 holds
500,000 gallons. Each
has a pressure gauge at
the base. Which will
register the most
pressure in psi?
If the water level in tower 1 is 51.1 psi
118 feet what will the
pressure reading be at the
base
What is the definition of Water that does not contain objectable pollution,
potable water contamination, or infective agents and is
considered safe for drinking
What is the first item used Corporation stop
when installing a service
line to a customer?
If a meter to a curb stop
residence is located in
the basement what
should be located
between the water
main and the house
, 2
A 5/8" x 3/4" water meter Decreases
serves a residence. Over
a period of years the
meter ________ in
recording actual water used
To isolate part of a Gate valve
distribution system what
type of valve is commonly
used?
Trihalomethanes (THMs) are Reaction of chlorinated water with numeric materials
caused by? found in surface water sources
EARHT SCIENCE ILLINOIS CLASS D
WATER LICENSE EXAM
Two Towers are both 125 feet Both will be equal
high, when full, contain
122 feet of water. Tower 1
holds 150,000
gallons. Tower 2 holds
500,000 gallons. Each
has a pressure gauge at
the base. Which will
register the most
pressure in psi?
If the water level in tower 1 is 51.1 psi
118 feet what will the
pressure reading be at the
base
What is the definition of Water that does not contain objectable pollution,
potable water contamination, or infective agents and is
considered safe for drinking
What is the first item used Corporation stop
when installing a service
line to a customer?
If a meter to a curb stop
residence is located in
the basement what
should be located
between the water
main and the house
, 2
A 5/8" x 3/4" water meter Decreases
serves a residence. Over
a period of years the
meter ________ in
recording actual water used
To isolate part of a Gate valve
distribution system what
type of valve is commonly
used?
Trihalomethanes (THMs) are Reaction of chlorinated water with numeric materials
caused by? found in surface water sources
