TCEQ CLASS D WATER OPERATORS
LICENSE EXAM QUESTIONS AND
ANSWERS 2026 VERIFIED.
Water Covers _______ of the earth's Surface - ANS 75%
Humans can only live ________ days without water - ANS 4-5 Days
Maximum Daily Demand can be determined - ANS From monthly operating reports or by
multiplying 2.4 times the average daily demand on the system.
130 - ANS Utilities that provide fire protection have to have a minimum of ____ Gallons per
person per day
75% - ANS Commercial, Industrial, and Agricultural Use makes up _____ % in Texas
57% - ANS Agricultural use accounts for _____% of total water consumed in Texas
97% - ANS _____% of the total volume of water available is saltwater
1% - ANS 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.
@2026/2027 ALLRIGHTS RESERVED.
, Electrodialysis Reversal (EDR) - ANS Electrochemical separation process in which saline water
passes through alternately placed cations and anion membranes.
reverse osmosis - ANS A desalinization process that involves forcing salt-water through a
membrane permeable to water but not to salt
2000 - ANS Excluding outside use, the average household uses about _____ gallons of water
per month on inside use
True - ANS True or False: only about 1 gallon of tap water per person/day is used for drinking
and cooking
demand - ANS Monitoring average and maximum daily water _____ enables us to plan ahead
for growth.
potable - ANS suitable for drinking
Safe Drinking Water Act (1974) - ANS 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 - ANS Providing the public water for human consumption through pipes
or other constructed conveyances
Requirements of a public water system - ANS 1. Have at least 15 service connections or
2. Serve at least 25 individuals at least 60 days out of the year.
Community - ANS System has potential to serve at least 15 residential service connections on
a year-round basis or serve at least 25 full time residents on a year round basis.
@2026/2027 ALLRIGHTS RESERVED.
LICENSE EXAM QUESTIONS AND
ANSWERS 2026 VERIFIED.
Water Covers _______ of the earth's Surface - ANS 75%
Humans can only live ________ days without water - ANS 4-5 Days
Maximum Daily Demand can be determined - ANS From monthly operating reports or by
multiplying 2.4 times the average daily demand on the system.
130 - ANS Utilities that provide fire protection have to have a minimum of ____ Gallons per
person per day
75% - ANS Commercial, Industrial, and Agricultural Use makes up _____ % in Texas
57% - ANS Agricultural use accounts for _____% of total water consumed in Texas
97% - ANS _____% of the total volume of water available is saltwater
1% - ANS 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.
@2026/2027 ALLRIGHTS RESERVED.
, Electrodialysis Reversal (EDR) - ANS Electrochemical separation process in which saline water
passes through alternately placed cations and anion membranes.
reverse osmosis - ANS A desalinization process that involves forcing salt-water through a
membrane permeable to water but not to salt
2000 - ANS Excluding outside use, the average household uses about _____ gallons of water
per month on inside use
True - ANS True or False: only about 1 gallon of tap water per person/day is used for drinking
and cooking
demand - ANS Monitoring average and maximum daily water _____ enables us to plan ahead
for growth.
potable - ANS suitable for drinking
Safe Drinking Water Act (1974) - ANS 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 - ANS Providing the public water for human consumption through pipes
or other constructed conveyances
Requirements of a public water system - ANS 1. Have at least 15 service connections or
2. Serve at least 25 individuals at least 60 days out of the year.
Community - ANS System has potential to serve at least 15 residential service connections on
a year-round basis or serve at least 25 full time residents on a year round basis.
@2026/2027 ALLRIGHTS RESERVED.
