WATER DISTRIBUTION PRACTICE TEST
D1 /D2 QUESTIONS WITH CORRECT
ANSWERS 2026
The Jonly Jabsolutely Jreliable Jmethod Jof Jbackflow Jprevention Jis Jthe Juse Jof J- JCORRECT JANSWER J-
Air JGap
The Jbubbles Jformed Jin Ja Jpositive Jmultiple Jtube Jfermentation Jtest Jare J-RCORRECT
JANSWER J- JCarbon JDioxide
The Jmaximum Jrate Jof Jwithdrawal Jof Jgas Jfrom Ja J150lb Jchlorine Jcylinder Jin J24-hours Jis
J- JCORRECT JANSWER J-40 Jlbs
If Jyou Jencounter Ja Jliquid Jchlorine Jleak Jin Ja Jone Jtone Jcontainer, Jwhat Jaction Jshould Jyou Jtake
Jfirst, Jto Jredu Jce Jthe Jseverity Jof Jthe Jleak? J- JCORRECT JANSWER J-Rotate Jthe Jcontainer Jto Jplace
Jthe JleakRat Jthe Jtop
The Jmost Jcommonly Jused Jwater Jdisinfectant Jin Jthe JUnited JStates Jis J- JCORRECT JANSWER J-Chlorine
When Jcollecting Ja Jdistribution Jsystem Jsample, Jthe Jwater Jshould Jbe Jallowed Jto Jrun Jfor Ja Jperiod
Jof Jtime Jp Jrior Jto Jsample Jcollection. JHow Jlong J- JCORRECT JANSWER J-
As Jlong Jas Jnecessary Jto Jpermit Jcleaning Jof Jservice Jline
, Sample Jbottles Jwich Jare Jfurnished Jby Ja Jcertified Jlaboratory Jfor Jcollection Jof Jbacteriological
Jsamples J- JCORRECT JANSWER J-Are Jready Jto Juse
The Jdifference Jbetween Jwater Jpressure Jupstream Jand Jdownstream Jof Ja Jpump Jwhen Jit Jis Jnot Jin
Joperatio Jns Jis Jknow Jas Jthe J- JCORRECT JANSWER J-Total Jstatic Jhead
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Jthe Jtank Jr Jeache Ja Jpreset Jlevel Jis Jtermed Ja J- JCORRECT JANSWER J-Altitude Jvalve
In Jan Joccupied Jtrench Jrequiring Jpersonal Jegress Jwhat Jis Jthe Jmaximum Jallowable Jdistance
Jbetween Ja Jwo Jrker Jand Jan Jexit Jletter J- JCORRECT JANSWER J-25 Jfeet
D1 /D2 QUESTIONS WITH CORRECT
ANSWERS 2026
The Jonly Jabsolutely Jreliable Jmethod Jof Jbackflow Jprevention Jis Jthe Juse Jof J- JCORRECT JANSWER J-
Air JGap
The Jbubbles Jformed Jin Ja Jpositive Jmultiple Jtube Jfermentation Jtest Jare J-RCORRECT
JANSWER J- JCarbon JDioxide
The Jmaximum Jrate Jof Jwithdrawal Jof Jgas Jfrom Ja J150lb Jchlorine Jcylinder Jin J24-hours Jis
J- JCORRECT JANSWER J-40 Jlbs
If Jyou Jencounter Ja Jliquid Jchlorine Jleak Jin Ja Jone Jtone Jcontainer, Jwhat Jaction Jshould Jyou Jtake
Jfirst, Jto Jredu Jce Jthe Jseverity Jof Jthe Jleak? J- JCORRECT JANSWER J-Rotate Jthe Jcontainer Jto Jplace
Jthe JleakRat Jthe Jtop
The Jmost Jcommonly Jused Jwater Jdisinfectant Jin Jthe JUnited JStates Jis J- JCORRECT JANSWER J-Chlorine
When Jcollecting Ja Jdistribution Jsystem Jsample, Jthe Jwater Jshould Jbe Jallowed Jto Jrun Jfor Ja Jperiod
Jof Jtime Jp Jrior Jto Jsample Jcollection. JHow Jlong J- JCORRECT JANSWER J-
As Jlong Jas Jnecessary Jto Jpermit Jcleaning Jof Jservice Jline
, Sample Jbottles Jwich Jare Jfurnished Jby Ja Jcertified Jlaboratory Jfor Jcollection Jof Jbacteriological
Jsamples J- JCORRECT JANSWER J-Are Jready Jto Juse
The Jdifference Jbetween Jwater Jpressure Jupstream Jand Jdownstream Jof Ja Jpump Jwhen Jit Jis Jnot Jin
Joperatio Jns Jis Jknow Jas Jthe J- JCORRECT JANSWER J-Total Jstatic Jhead
ARdevice Jthat Jautomatically Jshuts Joff Jflow Jin Jan Jelevated Jstorage Jtank Jwhen Jthe Jwater Jlevel Jin
Jthe Jtank Jr Jeache Ja Jpreset Jlevel Jis Jtermed Ja J- JCORRECT JANSWER J-Altitude Jvalve
In Jan Joccupied Jtrench Jrequiring Jpersonal Jegress Jwhat Jis Jthe Jmaximum Jallowable Jdistance
Jbetween Ja Jwo Jrker Jand Jan Jexit Jletter J- JCORRECT JANSWER J-25 Jfeet
