AWWA WATER DISTRIBUTION GRADE 1 AND 2 EST WITH
LATEST UPDATED (QUESTIONS AND ANSWERS) ALREADY
PASSED!!
Backflow Correct Answers Reverse flow of non-potable water into the
potable water supply
Cross Connection Correct Answers Physical connection between potable
water and non-potable water
High Carbon Steel Correct Answers Material used for cleaning pipes
Pressure Head Correct Answers Vertical distance from the point of
pressure measurement to the hydraulic grade line
Oversized Meters Correct Answers Cause low flows and inaccurate
measurements
Mechanical Seals Correct Answers Used on pump shafts to prevent
water leakage into the pump
Effective Height Correct Answers Total feet of head against which a
pump must work
Fire Hydrant Accessibility Correct Answers Should be accessible to a
15-inch wrench for repair and replacement
,Concrete Pressure Pipes Correct Answers Best for maintaining water
quality
Water Age Control Correct Answers Operating storage facilities to
promote good mixing and control water age
Axial Pumps Correct Answers Pumps with no volute or diffuser vanes
Distribution Systems Correct Answers Can be arterial loop, grid, or tree
systems
Calcium Carbonate Undersaturation Correct Answers Weakens cement
mortar
Water Pressure Impact Correct Answers May cause leaks, appliance
failures, and hot water tank leaks
Magnetic Meters Correct Answers Type of velocity meter good for
measuring flow of dirty and corrosive liquid
Organic Compounds Correct Answers Can permeate plastic pipes
Nitrates and Nitrites Correct Answers Can cause 'blue baby syndrome' if
they enter the system from a cross connection
,Water Hammer Correct Answers Caused by shutting a butterfly valve
too quickly
Packing Leakage Correct Answers Should be inspected daily with the
rest of the pump
Bituminous and Polyethylene Wraps Correct Answers Used to protect
the exterior of ductile iron pipe
Fabricated Tapping Sleeves Correct Answers Made out of steel or
stainless steel
Grid System Correct Answers Consists of 6-8 inch lines reinforced by
larger arterial mains
Composite Plastic Pipe Correct Answers Typically reinforced with
fiberglass
Throttling Discharge Valve Correct Answers Should be done when
elevated storage is not available to approximate system flow
Compound Meters Correct Answers Used for customers with a wide
variation in water usage
Water System Pressure Loss Correct Answers Could cause reduced
firefighting capabilities and bacterial contamination
, Hydrant Inspection Correct Answers Should be done yearly, especially
in freezing climates
Double Check Valves Correct Answers Not recommended for situations
where backflows may present a health hazard
Pressure Reducing Valves Correct Answers Use a globe valve-like
design to reduce pressure in a distribution zone
Throttling a Pump Correct Answers Against a gate valve can damage the
gate valve and reduce the pump's efficiency
Power Correct Answers The rate of doing work
Reasonable Use Rule Correct Answers Property owner's right to pump
groundwater, unless it interferes with their neighbor's use and is
unreasonable
Riparian Doctrine Correct Answers States all property owners with land
abutting a source of water have equal rights to this water
Correlative Rights Correct Answers Requires sharing when there is not
enough groundwater to satisfy all users
LATEST UPDATED (QUESTIONS AND ANSWERS) ALREADY
PASSED!!
Backflow Correct Answers Reverse flow of non-potable water into the
potable water supply
Cross Connection Correct Answers Physical connection between potable
water and non-potable water
High Carbon Steel Correct Answers Material used for cleaning pipes
Pressure Head Correct Answers Vertical distance from the point of
pressure measurement to the hydraulic grade line
Oversized Meters Correct Answers Cause low flows and inaccurate
measurements
Mechanical Seals Correct Answers Used on pump shafts to prevent
water leakage into the pump
Effective Height Correct Answers Total feet of head against which a
pump must work
Fire Hydrant Accessibility Correct Answers Should be accessible to a
15-inch wrench for repair and replacement
,Concrete Pressure Pipes Correct Answers Best for maintaining water
quality
Water Age Control Correct Answers Operating storage facilities to
promote good mixing and control water age
Axial Pumps Correct Answers Pumps with no volute or diffuser vanes
Distribution Systems Correct Answers Can be arterial loop, grid, or tree
systems
Calcium Carbonate Undersaturation Correct Answers Weakens cement
mortar
Water Pressure Impact Correct Answers May cause leaks, appliance
failures, and hot water tank leaks
Magnetic Meters Correct Answers Type of velocity meter good for
measuring flow of dirty and corrosive liquid
Organic Compounds Correct Answers Can permeate plastic pipes
Nitrates and Nitrites Correct Answers Can cause 'blue baby syndrome' if
they enter the system from a cross connection
,Water Hammer Correct Answers Caused by shutting a butterfly valve
too quickly
Packing Leakage Correct Answers Should be inspected daily with the
rest of the pump
Bituminous and Polyethylene Wraps Correct Answers Used to protect
the exterior of ductile iron pipe
Fabricated Tapping Sleeves Correct Answers Made out of steel or
stainless steel
Grid System Correct Answers Consists of 6-8 inch lines reinforced by
larger arterial mains
Composite Plastic Pipe Correct Answers Typically reinforced with
fiberglass
Throttling Discharge Valve Correct Answers Should be done when
elevated storage is not available to approximate system flow
Compound Meters Correct Answers Used for customers with a wide
variation in water usage
Water System Pressure Loss Correct Answers Could cause reduced
firefighting capabilities and bacterial contamination
, Hydrant Inspection Correct Answers Should be done yearly, especially
in freezing climates
Double Check Valves Correct Answers Not recommended for situations
where backflows may present a health hazard
Pressure Reducing Valves Correct Answers Use a globe valve-like
design to reduce pressure in a distribution zone
Throttling a Pump Correct Answers Against a gate valve can damage the
gate valve and reduce the pump's efficiency
Power Correct Answers The rate of doing work
Reasonable Use Rule Correct Answers Property owner's right to pump
groundwater, unless it interferes with their neighbor's use and is
unreasonable
Riparian Doctrine Correct Answers States all property owners with land
abutting a source of water have equal rights to this water
Correlative Rights Correct Answers Requires sharing when there is not
enough groundwater to satisfy all users
