Texas Class D Water Distribution study
guide Questions and Answers
A Groundwater well is currently producing 820 gallons per minute. Convert 820 gpm to Million
Gallons per Day MGD 1.18
In the distribution system where would a person expect to find a valve commonly referred to a
curb stop? At the property line and immediately in front of the water meter
Public water system in Texas are required to compile and maintain reports showing
A. Pumpage and Chemical used
B. Date of Dead end Flushing & storage tanks cleaned
C. Microbiological test and Chemical analysis
D. A & C only
E. A, B & C E. A, B & C
Groundwater is generally well filtered and free of turbidity, color and organics. however it may
be high in Hardness, minerals and inorganics
Livestock and septic tanks must be no closer than __________ to a public well 50 feet
, Feedlots, sewage treatment plants and landfills must at least ______ feet from a public well
500 feet
Red water or red stains may be caused by ______ levels in the water. Iron
A pinging sound or "rocks bouncing" sound coming from the pump typically indicates a pump is
Cavitating
In the distribution system where would you find a corporation stop At the providers main
line
You are treating 21 MGD water. how many gallons per minute is this? 14,583
What is the approximate total volume in gallons of a circular tank if it is 30 feet in diameter and
15 feet deep 79,300
In a groundwater system according to the well drillers report the hole was drilled 338 feet deep -
the static level of water in the well is 108 feet - the pumping level is 171 feet. what is the
drawdown? 63 feet
At the base of an elevated storage tank, a pressure gauge reads 72 psi. How far above the gauge
is the water's surface? 166 feet
guide Questions and Answers
A Groundwater well is currently producing 820 gallons per minute. Convert 820 gpm to Million
Gallons per Day MGD 1.18
In the distribution system where would a person expect to find a valve commonly referred to a
curb stop? At the property line and immediately in front of the water meter
Public water system in Texas are required to compile and maintain reports showing
A. Pumpage and Chemical used
B. Date of Dead end Flushing & storage tanks cleaned
C. Microbiological test and Chemical analysis
D. A & C only
E. A, B & C E. A, B & C
Groundwater is generally well filtered and free of turbidity, color and organics. however it may
be high in Hardness, minerals and inorganics
Livestock and septic tanks must be no closer than __________ to a public well 50 feet
, Feedlots, sewage treatment plants and landfills must at least ______ feet from a public well
500 feet
Red water or red stains may be caused by ______ levels in the water. Iron
A pinging sound or "rocks bouncing" sound coming from the pump typically indicates a pump is
Cavitating
In the distribution system where would you find a corporation stop At the providers main
line
You are treating 21 MGD water. how many gallons per minute is this? 14,583
What is the approximate total volume in gallons of a circular tank if it is 30 feet in diameter and
15 feet deep 79,300
In a groundwater system according to the well drillers report the hole was drilled 338 feet deep -
the static level of water in the well is 108 feet - the pumping level is 171 feet. what is the
drawdown? 63 feet
At the base of an elevated storage tank, a pressure gauge reads 72 psi. How far above the gauge
is the water's surface? 166 feet
