Water Distro

The conversion of liquid water to gaseous water is known as

Compared with a time period of 1 billion years ago, the amount of water
on earth today is

Essentially the same

1.                 
The movement of water from the surface of the earth into the soil is
called

Percolation

1.                 
What percentage of all the earth’s water is readily available as a
potential drinking water supply in the form of lakes, rivers, and near-surface
groundwater?

0.34%

1.                 
The process by which water changes from the liquid phase to the solid
phase is

Freezing

1.                 
The term for the combined processes which transfer liquid water on the
earth’s surface into water in the gas phase in the atmosphere is

Evapotranspiration

1.                 
The movement of water from the atmosphere to the surface of the earth
is called

Precipitation

1.                 
The process by which water changes from the gas to the liquid phase is
termed

Condensation

1.                 
After the oceans and salt lakes and seas, the largest component of
water storage on earth is

Permanent ice (polar ice caps and glaciers)

1.                 
The three states of matter are

Solid, liquid, and gas

1.                 
The movement of water on the surface of the earth is called

Runoff

1.                 
The freezing point of water is

32oF

Another term for the percolation that transports water from the surface into an aquifer

Recharge

Which
of the following is most susceptible to waterborne disease transmittal?

1.                 
Potable water may be defined as

1.                 
Groundwater is generally characterized by

1.                 
The most significant water quality issue worldwide is

1.                 
A storage tank holds a volume of water measured to be 150,000 cubic
feet.  How many gallons is this?

1.                 
A reservoir holds 400 acre-feet of water.  How many cubic feet are in this reservoir?

1.                 
A pipeline’s volume has been calculated to be 200,000 gallons.  How many cubic feet is this?

A water-bearing formation in the soil is referred to as

1.                 
The safe yield of an aquifer is

1.                 
The elevation of the free surface in a water table well which is not
running is termed

1.                 
An operating well will drain the water from a volume of soil around the
well during pumping.  This volume is
referred to as the

1.                 
The distance between the static water level and the pumping water level
is termed the

1.                 
The height to which water will rise in wells located in an artesian
aquifer is called the

1.                 
An aquifer under pressure is often termed

1.                 
To prevent the entry of surface contamination into a well is the
purpose of the

1.                 
An aquifer that is located underneath an aquiclude is called

1.                 
The free surface of the water in an unconfined aquifer is known as the

1.                 
An aquifer is usually composed of

1.                 
A formation in the soil that resists water movement (such as a clay
layer) is called

1.                 
Prior to starting a well, the depth-to-water is measured at 20
feet.  After pumping for 2 hours, the
depth to water is measured at 60 feet. 
The drawdown is

1.                 
A well is located in an aquifer with a water table elevation 20 feet
below the ground surface.  After
operating for three hours, the water level in the well stabilizes at 50 feet
below the ground surface.  The pumping
water level is

1.                 
A storage tank is 80-feet in diameter and 24-feet tall.  What is the area of the tank’s top, as
measured in square feet?

1.                 
The lowest concentration that can be officially reported for any
constituent in a water sample is known as the

1.                 
Drinking water is an example of a(n)

1.                 
A constituent in
drinking water is normally regulated as a primary drinking water standard
because it

1.                 
Primary Drinking Water Standards include which of the following?

1.                 
All organic compounds contain

Mercury
and Cadmium are examples of

1.                 
Iron and manganese are examples of

1.                 
The odor of drinking water is

1.                 
In drinking water, gross alpha and gross beta emissions are used to
measure

1.                 
Red-colored stains of laundry and porcelain fixtures are likely due to
elevated levels of

1.                 
Disinfection by-products, solvents, and pesticides are examples of

1.                 
The physical analysis of drinking water includes which of the
following?

1.                 
Nitrate concentration in drinking water is regulated because it

1.                 
A pH reading of 6.0 units indicates that the water sample is

1.                 
In terms of actual world-wide deaths, the most dangerous constituents
in water are

1.                 
Constituents in drinking water that are known to present public health
risks have

1.                 
Manganese has a
secondary MCL of 0.050 mg/L, because it may cause

Secondary
Drinking Water Standards are established for which of the following?

1.                 
In drinking water quality, the abbreviation MCL stands for

1.                 
The symbol “μg/L” is equivalent to

1.                 
For water distribution systems, the term “diurnal” refers to demand
patterns that vary

1.                 
A specialized reservoir with the main purpose of diminishing risk from
transient pressure spikes is the

1.                 
The component of reservoir storage that is intended to address fire
flows and main breaks is referred to as

1.                 
A standpipe is a

1.                 
A device that is commonly used to prevent a reservoir from over-filling
and/or over-draining is the

1.                 
A clearwell is a

1.                 
A hydropneumatic tank is a device that

1.                 
Reservoirs
constructed below the ground surface are

1.                 
In addition to
providing sufficient water supply, reservoirs can be used to

Which of the following reservoir types is most
likely to have a large amount of ineffective storage?

1.                 
A booster pump
station’s effluent flow totalizer reads 205478 at midnight on Sunday.  The following Sunday at midnight, the same
totalizer reads 208898.  This totalizer
is graduated in 1000’s of gallons.  How
many gallons of water were pumped this week?

1.                 
How many gallons
of water are currently stored in a cylindrical tank that is 60 feet in diameter
and 25 feet tall, if the water level is 18 feet?

1.                 
What is the
volume in cubic feet of two miles of 18-inch pipe?

1.                 
A reservoir holds
2,500,000 gallons, and the average flow rate in the community is 4500 gpm.  How many cubic feet of water are in this
reservoir?

1.                 
The surest
indicator that any single tube in a multiple tube fermentation test has
positive results is

1.                 
The time period
required to complete both the presumptive and confirmed steps (combined) of the
multiple tube fermentation test is

1.                 
In the ColiLert
test, a blue colored test vial under UV light indicates the

1.                 
The multiple tube
fermentation analysis consists of

1.                 
What steps must
be taken when a single routine sample tests positive for total coliform?

For drinking water distribution systems with
over 40 routine coliform samples per month, the maximum amount of
coliform-positive samples permitted is

1.                 
The maximum
disinfectant residual allowed in a distribution system is

1.                 
An alternative
coliform measurement technique to multiple tube fermentation is

1.                 
The standard
indicator of potential fecal contamination of a water supply is

1.                 
Which of the
following is NOT a characteristic of coliform organisms?

1.                 
The presence of
coliform bacteria in a distribution system

1.                 
A bacteriological
test that measures only the presence or absence of coliforms is

1.                 
What percentage
of the routine samples in a distribution system must have a detectable residual
disinfectant?

The unique ingredient in the confirmed test of
the MPN method is

1.                 
The result of the
Multiple Tube Fermentation test is reported as

1.                 
In the ColiLert
method, the presence of E. coli can
be detected

1.                 
The bubbles
formed in a positive multiple tube fermentation test are

1.                 
In the membrane
filtration test, the appearance of E. coli colonies exhibits

The regulation that establishes standards for
microbiological quality in drinking water

1.                 
Rank these three
groups of bacteria from the largest number of members to the smallest.

1.                 
A lightweight type of pipe that has a very smooth interior, is
essentially corrosion-free, and which is difficult to locate when buried is

1.                 
The lowest point of the inside of a pipe is known as the

1.                 
An example of a pipe material that is difficult to locate underground
is

1.                 
If possible, a water main leak should be repaired under pressure to

1.                 
Pipe with a “C” factor of 140 is regarded as having a(n)





>

Extremely smooth interior

1.                 
A connection made into a main that is full or under pressure is called
a

1.                 
The purpose of installing air and vacuum relief valves on pipelines is
to

1.                 
A valve that is used to facilitate tapping is the

1.                 
The pipe system layout that is most likely to have water quality
degradation is the

1.                 
The measurement of a pipe material’s resistance to pulling is called
its

1.                 
Uniform corrosion of distribution system pipelines is most likely due
to

1.                 
Which of the following metals is least likely to corrode?

1.                 
Which of the following may alter water quality in the distribution
system?

a.                  
Disinfectant residual levels

b.                 
Water age

c.                  
Low system pressures

d.                 
Biofilm formation

All of the above

All of the above

1.                 
Which of the following metals is commonly used in cathodic protection?

a.                  
Brass

b.                 
Copper

c.                  
Lead

d.                 
Iron

e.                  
Zinc

1.                 
The valve type most commonly used for isolation in a water distribution
system is the

1.                 
When fully open, which of the following will have the highest friction
loss?

The effects of trapped gas in pipelines can be minimized with

1.                 
The minimum pressure that should be present in distribution system mains
during fire flow conditions is

1.                 
Magnetic flow meters and ultrasonic flow meters are well suited to measure
flow rates of water with a large concentration of suspended solids, because
they have

1.                 
Dry-barrel fire hydrants have their operating valves

1.                 
A venturi is a device used to

1.                 
The most commonly used meter on small diameter domestic service is the

1.                 
The drain hole in a fire hydrant is designed to

1.                 
A compound meter is a device which

1.                 
Which of the following is a device used to measure flow?

An
example of a pressure-differential type water meter is a

1.                 
When closing a hydrant, it should be

1.                 
What category of meters is exemplified by propeller and turbine types?

A
nutating disk is found in certain

1.                 
A residential meter measures hundreds of cubic feet of water use.  If this meter reads 0044567 on April 1, and
0044600 on May 1, how many cubic feet of water were delivered to this
residence?

how many feet verticle = one psi

9.5 psi would equal how many vertical ft