Class D Water License CERTIFICATION
PAPER 2026 FULL SOLUTION GRADED A+
● Humans can only live ________ days without water. Answer: 4-5
Days
● Maximum Daily Demand can be determined. Answer: From monthly
operating reports or by multiplying 2.4 times the average daily demand
on the system.
● 130. Answer: Utilities that provide fire protection have to have a
minimum of ____ Gallons per person per day
● 75%. Answer: Commercial, Industrial, and Agricultural Use makes up
_____ % in Texas
● 57%. Answer: Agricultural use accounts for _____% of total water
consumed in Texas
● 97%. Answer: _____% of the total volume of water available is
saltwater
, ● 1%. Answer: 3% of total volume of water available is considered
fresh water. 2% is locked in polar icecaps and glaciers. ____% of all
water on earth is accessible fresh water.
● Electrodialysis Reversal (EDR). Answer: Electrochemical separation
process in which saline water passes through alternately placed cations
and anion membranes.
● reverse osmosis. Answer: A desalinization process that involves
forcing salt-water through a membrane permeable to water but not to salt
● 2000. Answer: Excluding outside use, the average household uses
about _____ gallons of water per month on inside use
● True. Answer: True or False: only about 1 gallon of tap water per
person/day is used for drinking and cooking
● demand. Answer: Monitoring average and maximum daily water
_____ enables us to plan ahead for growth.
● potable. Answer: suitable for drinking
● Safe Drinking Water Act (1974). Answer: The federal regulation of
drinking water is done by the U.S. Environmental Protection Agency
PAPER 2026 FULL SOLUTION GRADED A+
● Humans can only live ________ days without water. Answer: 4-5
Days
● Maximum Daily Demand can be determined. Answer: From monthly
operating reports or by multiplying 2.4 times the average daily demand
on the system.
● 130. Answer: Utilities that provide fire protection have to have a
minimum of ____ Gallons per person per day
● 75%. Answer: Commercial, Industrial, and Agricultural Use makes up
_____ % in Texas
● 57%. Answer: Agricultural use accounts for _____% of total water
consumed in Texas
● 97%. Answer: _____% of the total volume of water available is
saltwater
, ● 1%. Answer: 3% of total volume of water available is considered
fresh water. 2% is locked in polar icecaps and glaciers. ____% of all
water on earth is accessible fresh water.
● Electrodialysis Reversal (EDR). Answer: Electrochemical separation
process in which saline water passes through alternately placed cations
and anion membranes.
● reverse osmosis. Answer: A desalinization process that involves
forcing salt-water through a membrane permeable to water but not to salt
● 2000. Answer: Excluding outside use, the average household uses
about _____ gallons of water per month on inside use
● True. Answer: True or False: only about 1 gallon of tap water per
person/day is used for drinking and cooking
● demand. Answer: Monitoring average and maximum daily water
_____ enables us to plan ahead for growth.
● potable. Answer: suitable for drinking
● Safe Drinking Water Act (1974). Answer: The federal regulation of
drinking water is done by the U.S. Environmental Protection Agency
