TCEQ CLASS C WATER LICENSE EXAM 2026
EXAMINATION TEST COMPLETE Q&A WITH
ACCURATE ANSWERS
◉ 5/8 meters need to be tested at least every _____ to _______ yrs.
Answer: 5, 10
◉ When disinfecting a water line, use ____mg/L of chlorine in the
main and let stand for ____hrs. Answer: 50, 24
◉ When pressure testing the water main, the test pressure should
be ___times as great as the ________ operating pressure. Answer: 1.5,
normal
◉ Distribution systems are usually laid out in ____ and/or circular
designs. Answer: loops
◉ Dead ends in a system are usually located on ____ shaped or ____
designs. Answer: tree, grid
◉ An operator may refer to Piezometric elevation, static head, or
pressure head as ____ height Answer: vertical water column
, ◉ The main purpose of the water storage facility is to provide ____
amount of water to average or equalize the ______ demands plus
provide ______ pressures to fight fires. Answer: sufficient, daily,
minimum
◉ Electrical demand in a wiring system is determined by the
amount of ____ consumed. Answer: watts
◉ Baffling inside a storage facility may be needed to prevent "hot
spots" and ____ flows. Answer: straight through
◉ A mass of concrete placed at bends and valve structures to
prevent pipeline movement is commonly called a _____. Answer:
thrust block
◉ What is the main difference between surface water and
groundwater contamination? Answer: groundwater takes longer to
recover after contamination
◉ A cross-connection is a connection between an _____ and an _______
water supply. Answer: approved, unapproved
◉ According to the CDC, which mechanism or problem has caused
more waterborne disease outbreaks in the US than any other
reported factor? Answer: leaking backflows
EXAMINATION TEST COMPLETE Q&A WITH
ACCURATE ANSWERS
◉ 5/8 meters need to be tested at least every _____ to _______ yrs.
Answer: 5, 10
◉ When disinfecting a water line, use ____mg/L of chlorine in the
main and let stand for ____hrs. Answer: 50, 24
◉ When pressure testing the water main, the test pressure should
be ___times as great as the ________ operating pressure. Answer: 1.5,
normal
◉ Distribution systems are usually laid out in ____ and/or circular
designs. Answer: loops
◉ Dead ends in a system are usually located on ____ shaped or ____
designs. Answer: tree, grid
◉ An operator may refer to Piezometric elevation, static head, or
pressure head as ____ height Answer: vertical water column
, ◉ The main purpose of the water storage facility is to provide ____
amount of water to average or equalize the ______ demands plus
provide ______ pressures to fight fires. Answer: sufficient, daily,
minimum
◉ Electrical demand in a wiring system is determined by the
amount of ____ consumed. Answer: watts
◉ Baffling inside a storage facility may be needed to prevent "hot
spots" and ____ flows. Answer: straight through
◉ A mass of concrete placed at bends and valve structures to
prevent pipeline movement is commonly called a _____. Answer:
thrust block
◉ What is the main difference between surface water and
groundwater contamination? Answer: groundwater takes longer to
recover after contamination
◉ A cross-connection is a connection between an _____ and an _______
water supply. Answer: approved, unapproved
◉ According to the CDC, which mechanism or problem has caused
more waterborne disease outbreaks in the US than any other
reported factor? Answer: leaking backflows
