AWWA WATER EFFICIENCY EXAM 2025/2026 — VERIFIED PRACTICE
VERSION WITH CORRECT ANSWERS (100% VERIFIED, GRADED A+)
Audit (end use) - CORRECT ANSWERS-a systematic accounting of water uses conducted to
identify opportunities for improved efficiency.
Authorized consumption - CORRECT ANSWERS-the annual volume of metered and/or
unmetered water taken by registered customers, the water supplier and others who are authorized to do
so.
Baseline - CORRECT ANSWERS-an established value or trend used for comparison when
conditions are altered
Benefit cost ration - CORRECT ANSWERS-benefits and costs measured in terms of money and
expressed as a ratio with divided by costs; typically used as an evaluation tool for different water
conservation measures and programs.
Best management practice (BMP) - CORRECT ANSWERS-a set of practices, measures, or
procedures that are beneficial, empirically proven, cost-effective, and widely accepted by the
professional community.
Block rate pricing - CORRECT ANSWERS-a method of charging for water based on the volume
used. As more water is used, the price increases (or decreases) through a series of blocks. These pricing
structures are designed to encourage efficient use of a resource.
Catch-can test - CORRECT ANSWERS-a measurement of precipitation from a sprinkler system
in which water is collected in graduated containers (catch cans) placed at evenly spaced intervals for a
specific period of times.
Central Irrigation control - CORRECT ANSWERS-a computerized system that programs
sprinkler clocks from a centralized location using a computer.
,Closed-loop cooling tower - CORRECT ANSWERS-water conserving cooling tower system in
which water used for cooling is recycled through a piping system that cools the water' the water is
cooled as air exchanges heat with the pipes.
Codes and standards - CORRECT ANSWERS-a set of requirements governing the design and
performance of water using fixtures or devices, adopted by a nationally or internationally recognized
code setting standard setting organizations.
Conservation pricing - CORRECT ANSWERS-water rate structures that increase the price of
water as more water is used with the goal of encouraging more efficient use.
Consumptive use (evapotranspiration) - CORRECT ANSWERS-combined amounts of water
needed for transpiration by vegetation and for evaporation from adjacent soil, snow, or intercepted
precipitation. Also called crop requirement, crop irrigation requirement, and consumptive use
requirement.
Continuous flow system - CORRECT ANSWERS-the continuous use, by an industry, of
deionized water to remove contaminants from products and equipment.
Cooling tower makeup - CORRECT ANSWERS-water added to the recirculating cooling tower
water stream to compensate for water evaporation losses.
Cooling water - CORRECT ANSWERS-water typically used to cool heat-generating equipment
or to condense gases in a thermodynamic cycle.
Cooling water blowdown - CORRECT ANSWERS-procedure used to reduce total dissolved
solids by removing a portion of low quality recirculating water
Cool-season grass - CORRECT ANSWERS-turf grass varieties that are typically not damaged by
subfreezing temperatures. Includes bluegrass, Kentucky bluegrass, perennial rye grass, red fescue, and
tall fescue.
, Decreasing block rate - CORRECT ANSWERS-pricing that reflects per-unit costs of production
and delivery that go down as customers consume more water.
Demand management - CORRECT ANSWERS-the practice of systematically reducing water use
for a broad spectrum of utility customers through efficiency measures and conservation, often as an
alternative to purchasing new water or expanding water treatment facilities.
Demand Scheduling - CORRECT ANSWERS-method of irrigation scheduling whereby water is
delivered to users as needed and which may vary in flow rate, frequency, and duration. Considered a
flexible form of scheduling.
Device - CORRECT ANSWERS-a physical item of hardware, such as a new toilet, or specific
action by individuals, such as commercial audits, that would save water if the recommendations are
implemented or carried out by the water utility or some other group.
Discount Rate - CORRECT ANSWERS-a value used to annualize costs or bring a future cost to
today's cost, often defined to be the cost of borrowed money minus the inflation rate, expressed as a
percent.
Distribution efficiency - CORRECT ANSWERS-measure of the uniformity of irrigation water
distribution over a field
Drawdown - CORRECT ANSWERS-the depth (from the top of the well) to the water in a well
when the pump is operating. The water level typically drops when the pump is running.
Dual-flush toilet - CORRECT ANSWERS-a toilet designed to use a lower volume of water to
flush liquid wastes and a higher volume of water to flush solid wastes.
Early-closure flapper - CORRECT ANSWERS-a toilet flapper valve that closes sooner than
normal to reduce the volume of water flushed.
VERSION WITH CORRECT ANSWERS (100% VERIFIED, GRADED A+)
Audit (end use) - CORRECT ANSWERS-a systematic accounting of water uses conducted to
identify opportunities for improved efficiency.
Authorized consumption - CORRECT ANSWERS-the annual volume of metered and/or
unmetered water taken by registered customers, the water supplier and others who are authorized to do
so.
Baseline - CORRECT ANSWERS-an established value or trend used for comparison when
conditions are altered
Benefit cost ration - CORRECT ANSWERS-benefits and costs measured in terms of money and
expressed as a ratio with divided by costs; typically used as an evaluation tool for different water
conservation measures and programs.
Best management practice (BMP) - CORRECT ANSWERS-a set of practices, measures, or
procedures that are beneficial, empirically proven, cost-effective, and widely accepted by the
professional community.
Block rate pricing - CORRECT ANSWERS-a method of charging for water based on the volume
used. As more water is used, the price increases (or decreases) through a series of blocks. These pricing
structures are designed to encourage efficient use of a resource.
Catch-can test - CORRECT ANSWERS-a measurement of precipitation from a sprinkler system
in which water is collected in graduated containers (catch cans) placed at evenly spaced intervals for a
specific period of times.
Central Irrigation control - CORRECT ANSWERS-a computerized system that programs
sprinkler clocks from a centralized location using a computer.
,Closed-loop cooling tower - CORRECT ANSWERS-water conserving cooling tower system in
which water used for cooling is recycled through a piping system that cools the water' the water is
cooled as air exchanges heat with the pipes.
Codes and standards - CORRECT ANSWERS-a set of requirements governing the design and
performance of water using fixtures or devices, adopted by a nationally or internationally recognized
code setting standard setting organizations.
Conservation pricing - CORRECT ANSWERS-water rate structures that increase the price of
water as more water is used with the goal of encouraging more efficient use.
Consumptive use (evapotranspiration) - CORRECT ANSWERS-combined amounts of water
needed for transpiration by vegetation and for evaporation from adjacent soil, snow, or intercepted
precipitation. Also called crop requirement, crop irrigation requirement, and consumptive use
requirement.
Continuous flow system - CORRECT ANSWERS-the continuous use, by an industry, of
deionized water to remove contaminants from products and equipment.
Cooling tower makeup - CORRECT ANSWERS-water added to the recirculating cooling tower
water stream to compensate for water evaporation losses.
Cooling water - CORRECT ANSWERS-water typically used to cool heat-generating equipment
or to condense gases in a thermodynamic cycle.
Cooling water blowdown - CORRECT ANSWERS-procedure used to reduce total dissolved
solids by removing a portion of low quality recirculating water
Cool-season grass - CORRECT ANSWERS-turf grass varieties that are typically not damaged by
subfreezing temperatures. Includes bluegrass, Kentucky bluegrass, perennial rye grass, red fescue, and
tall fescue.
, Decreasing block rate - CORRECT ANSWERS-pricing that reflects per-unit costs of production
and delivery that go down as customers consume more water.
Demand management - CORRECT ANSWERS-the practice of systematically reducing water use
for a broad spectrum of utility customers through efficiency measures and conservation, often as an
alternative to purchasing new water or expanding water treatment facilities.
Demand Scheduling - CORRECT ANSWERS-method of irrigation scheduling whereby water is
delivered to users as needed and which may vary in flow rate, frequency, and duration. Considered a
flexible form of scheduling.
Device - CORRECT ANSWERS-a physical item of hardware, such as a new toilet, or specific
action by individuals, such as commercial audits, that would save water if the recommendations are
implemented or carried out by the water utility or some other group.
Discount Rate - CORRECT ANSWERS-a value used to annualize costs or bring a future cost to
today's cost, often defined to be the cost of borrowed money minus the inflation rate, expressed as a
percent.
Distribution efficiency - CORRECT ANSWERS-measure of the uniformity of irrigation water
distribution over a field
Drawdown - CORRECT ANSWERS-the depth (from the top of the well) to the water in a well
when the pump is operating. The water level typically drops when the pump is running.
Dual-flush toilet - CORRECT ANSWERS-a toilet designed to use a lower volume of water to
flush liquid wastes and a higher volume of water to flush solid wastes.
Early-closure flapper - CORRECT ANSWERS-a toilet flapper valve that closes sooner than
normal to reduce the volume of water flushed.
