TCEQ Class D Water Operators License Exam-Questions with
Correct Answers|Verified
Water Covers _______ of the earth's Surface - ✔✔75%
Humans can only live ________ days without water - ✔✔4-5 Days
Maximum Daily Demand can be determined - ✔✔From monthly operating reports or by
multiplying 2.4 times the average daily demand on the system.
130 - ✔✔Utilities that provide fire protection have to have a minimum of ____ Gallons per
person per day
75% - ✔✔Commercial, Industrial, and Agricultural Use makes up _____ % in Texas
57% - ✔✔Agricultural use accounts for _____% of total water consumed in Texas
97% - ✔✔_____% of the total volume of water available is saltwater
1% - ✔✔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) - ✔✔Electrochemical separation process in which saline water
passes through alternately placed cations and anion membranes.
reverse osmosis - ✔✔A desalinization process that involves forcing salt-water through a
membrane permeable to water but not to salt
2000 - ✔✔Excluding outside use, the average household uses about _____ gallons of water
per month on inside use
, True - ✔✔True or False: only about 1 gallon of tap water per person/day is used for drinking
and cooking
demand - ✔✔Monitoring average and maximum daily water _____ enables us to plan ahead
for growth.
potable - ✔✔suitable for drinking
Safe Drinking Water Act (1974) - ✔✔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 - ✔✔Providing the public water for human consumption through pipes
or other constructed conveyances
Requirements of a public water system - ✔✔1. Have at least 15 service connections or
2. Serve at least 25 individuals at least 60 days out of the year.
Community - ✔✔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.
nontransient noncommunity - ✔✔System serves at least 25 of the SAME people who do not
live at that location at least 6 months out of the year.
Transient non-community - ✔✔Public water system serves at least 25 persons of a transient
nature at least 60 days out of the year.
2 years - ✔✔Records Kept Required: amount of chemicals used, volume of water treated,
complaint log, dead-end line flushing, cleaning records of water storage tanks
Correct Answers|Verified
Water Covers _______ of the earth's Surface - ✔✔75%
Humans can only live ________ days without water - ✔✔4-5 Days
Maximum Daily Demand can be determined - ✔✔From monthly operating reports or by
multiplying 2.4 times the average daily demand on the system.
130 - ✔✔Utilities that provide fire protection have to have a minimum of ____ Gallons per
person per day
75% - ✔✔Commercial, Industrial, and Agricultural Use makes up _____ % in Texas
57% - ✔✔Agricultural use accounts for _____% of total water consumed in Texas
97% - ✔✔_____% of the total volume of water available is saltwater
1% - ✔✔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) - ✔✔Electrochemical separation process in which saline water
passes through alternately placed cations and anion membranes.
reverse osmosis - ✔✔A desalinization process that involves forcing salt-water through a
membrane permeable to water but not to salt
2000 - ✔✔Excluding outside use, the average household uses about _____ gallons of water
per month on inside use
, True - ✔✔True or False: only about 1 gallon of tap water per person/day is used for drinking
and cooking
demand - ✔✔Monitoring average and maximum daily water _____ enables us to plan ahead
for growth.
potable - ✔✔suitable for drinking
Safe Drinking Water Act (1974) - ✔✔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 - ✔✔Providing the public water for human consumption through pipes
or other constructed conveyances
Requirements of a public water system - ✔✔1. Have at least 15 service connections or
2. Serve at least 25 individuals at least 60 days out of the year.
Community - ✔✔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.
nontransient noncommunity - ✔✔System serves at least 25 of the SAME people who do not
live at that location at least 6 months out of the year.
Transient non-community - ✔✔Public water system serves at least 25 persons of a transient
nature at least 60 days out of the year.
2 years - ✔✔Records Kept Required: amount of chemicals used, volume of water treated,
complaint log, dead-end line flushing, cleaning records of water storage tanks
