TCEQ Class D Water Operators License
Exam 2026 Questions and Answers
Water Covers _______ of the earth's Surface - Answer -75%
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.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, 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 (EPA), which sets the
drinking water quality standards and enforces this standards through a federal law
known as the
Public Water System - Answer -Providing the public water for human consumption
through pipes or other constructed conveyances
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
Exam 2026 Questions and Answers
Water Covers _______ of the earth's Surface - Answer -75%
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.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, 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 (EPA), which sets the
drinking water quality standards and enforces this standards through a federal law
known as the
Public Water System - Answer -Providing the public water for human consumption
through pipes or other constructed conveyances
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
