CERTIFIED POOL OPERATOR
HANDBOOK PRACTICE TEST – 2024
QUESTIONS WITH CORRECT ANSWERS
1. rYou roperate ra r120,000-gallon rpool, rand rupon rperforming ryour rhourly rchemical rtests
ryou robserve rthe rfollowing rreadings: rTotal rAvailable rChlorine rreading ris r1.6 rfree ravailable
rchlorine rreading ris r1.5 rpH ris r7.4 rYour rsupervising rlifeguard rhas rjust rinformed ryou rthat
ryou rhave rhad ra rfecal rincident roccur; ra rsolid rstool rhas rbeen rdischarged rinto rthe rpool.
rAccording rto rthe rCenters rfor rDisease rControl, ras rthe rCPO, ryou rshould rdo rthe rfollowing: r-
rCorrect rAnswer r- rclear rthe rpool rand rraise rthe rfree rchlorine rto r2 rppm
2. rAssuming rthat ryour rlocal rhealth rdepartment rrequires ryou rto rraise rthe rfree rchlorine rto r5
rppm, rhow rmuch rsodium rhypochlorite rwould rbe rneeded rto rraise rthe rfree rchlorine rin rthe
rpool rin rquestion r#1 rto rthat rlevel? r- rCorrect rAnswer r- r3.5 rgallons
3. rYou rare rthe rCPO rfor ran rindoor rhealth rclub rpool. rThe rfacility rmanager rinforms ryou rthat
rhe ris rreceiving rcomplaints rabout ra rstrong rchlorine rodor rin rthe rpool rarea, rand rseveral
rmembers rhave rcomplained rof reye rirritation. rThe rmost rlikely rcause rof rthese rcomplaints
ris: r- rCorrect rAnswer r- rhigh rlevels rof rchloramines rin rthe rpool
4. rTo rdetermine rthe rlevel rof rchloramines rin rthe rwater, ryou rshould rdo rwhich rof rthe
rfollowing? r- rCorrect rAnswer r- rtest rfor rtotal rchlorine rand rfree rchlorine, rthen rsubtract rthe
rfree rchlorine rnumber rfrom rthe rtotal rchlorine
5. rYou roperate ra r45,000 rgallon rindoor rpool, rand rupon rdoing ryour rhourly rchemical rtests
ryou robserve rthe rfollowing rreadings:Total ravailable rchlorine ris r2.2 rFree ravailable rchlorine
ris r1.4 rand rpH ris r7.6 rWhat ris rthe rlevel rof rchloramines rin rthis rpool? r- rCorrect rAnswer r- r0.8
7. rYou rare rthe roperator rof ra r330,000 rgallon routdoor rpool. rYour rlocal rhealth rdepartment
rrequires ryou rto rperform ra rwater rbalance rcalculation ronce rmonthly. rUpon rperforming rthe
rwater rtests rnecessary rto rperform rthis rcalculation, ryou robserve rthe rfollowing rreadings rin
ryour rpool: rTotal ralkalinity ris r50 rppm rpH ris r7.2 rCalcium rHardness ris r150 rppm
rTemperature ris r76 rdegrees rF rTotal rDissolved rSolids ris r500 rppm rUsing rthese rreadings,
rwhat ris rthe rSaturation rIndex rfor rthis rpool? r- rCorrect rAnswer r- r-0.8
8. rTo radjust rthe rtested rTotal rAlkalinity rin rthe rpool rin rquestion r#7 rto ran racceptable rlevel,
rwhich rchemical rwould rbe rmost rappropriate? r- rCorrect rAnswer r- rSodium rBicarbonate
9. rTo radjust rthe rtested rpH rin rthe rpool rin rquestion r#7 rto ran racceptable rlevel, rwhich
rchemical rwould rbe rmost rappropriate? r- rCorrect rAnswer r- rSodium rCarbonate
, 10. rYou rare rthe rCPO rfor ra r28,000 rgallon rhotel rpool. rYou rperform ra rwater rbalance
rchemical rtest, rand rto ryour rsurprise, rthe rCalcium rHardness ris ronly r100 rppm. rHow rmuch
rcalcium rchloride r(77%) rwould rbe rrequired rto rincrease rthis rto r400 rppm?" r- rCorrect
rAnswer r- r100.8 rlbs.
11. rYou rare rthe rCPO rfor ra r100 rfoot rlong, r50 rfoot rwide rcountry rclub rpool. rThe raverage
rdepth rof rthis rpool ris r7 rfeet. rYou rreturn rto rthe rpool ron rMonday rmorning, rafter ra rrare
rweekend roff, rand rfind rthat rthe rauto-fill rfeature rhas rfailed rto rwork, rand rthe rpool rwater rlevel
ris rfour rinches rtoo rlow. rHow rmany rgallons rof rwater rmust rbe radded rto rreturn rthe rwater rto
rthe rproper rlevel? r- rCorrect rAnswer r- r12,495 rgallons
12. rYou rare rthe roperator rof ra r3,000 rgallon rhealth rclub rspa, rwhich rhas ran raverage rof r100
rusers rper rday. rAccording rto rthe rCPO rHandbook, rhow roften rshould rthe rwater rin rthis rspa
rbe rchanged? r- rCorrect rAnswer r- r10 rdays
"13. rYou rare rthe rCPO rfor ra rlarge rmunicipal rswimming rpool. rThis rpool rhas ra rvolume rof
r560,000 rgallons rof rwater,and rhas ran raverage rdaily rbather rload rof r1300 rpeople. rThe rpool
ris roperated rusing rhigh rrate rpressure rsand rfilters. rHow roften rshould ryou rbackwash rthe
rfilters?" r- rCorrect rAnswer r- rWhen rthe rinfluent rand reffluent rgauges rare r10 rto r20 rpsi rapart
14. rIn rtesting rfor rChlorine/Bromine rin ra rcommercial rpool, rDPD ris rpreferred rover rOTO
rbecause: r- rCorrect rAnswer r- rOTO ronly rtests rfor rTotal rChlorine
15. rSafety rand rrescue requipment rshould ralways rbe: r- rCorrect rAnswer r- rKept reasily
raccessible raround rthe rpool
16. rWhich rtype rof rfilter rsystem rwill rremove rthe rsmallest rmicron rparticles? r- rCorrect
rAnswer r- rdiatomaceous rearth
17. rIf rthe rpump rfails rto rprime, rwhich rof rthe rfollowing rdoes rnot rhave rto rbe rchecked? r-
rCorrect rAnswer r- rfilter rsystem rpressure ris rtoo rhigh
18. rOxidation rReduction rPotential rtesting r(ORP) ris rmeasured rin? r- rCorrect rAnswer r- rmV
19. rHigh rcalcium rhardness rcan rresult rin rwhat rcondition? r- rCorrect rAnswer r- rcloudy rwater
20. rHead rfirst rentry rdives rare: r- rCorrect rAnswer r- ronly rallowed rin rareas rof rthe rpool rthat
rare rnot rmarked ras r'NO rDIVING'
21. rOpening rand rclosing rchecklists: r- rCorrect rAnswer r- rall rof rthe rabove
22. rYou rcan rbecome rsick rfrom ringesting rwater rinfected rwith rLegionella rbacteria r- rCorrect
rAnswer r- rfalse
23. rChanneling rof rfilters roccurs rwhen: r- rCorrect rAnswer r- rthe rFMR ris rexceeded, rand
rwater rcuts ra rchannel rthrough rthe rmedia
HANDBOOK PRACTICE TEST – 2024
QUESTIONS WITH CORRECT ANSWERS
1. rYou roperate ra r120,000-gallon rpool, rand rupon rperforming ryour rhourly rchemical rtests
ryou robserve rthe rfollowing rreadings: rTotal rAvailable rChlorine rreading ris r1.6 rfree ravailable
rchlorine rreading ris r1.5 rpH ris r7.4 rYour rsupervising rlifeguard rhas rjust rinformed ryou rthat
ryou rhave rhad ra rfecal rincident roccur; ra rsolid rstool rhas rbeen rdischarged rinto rthe rpool.
rAccording rto rthe rCenters rfor rDisease rControl, ras rthe rCPO, ryou rshould rdo rthe rfollowing: r-
rCorrect rAnswer r- rclear rthe rpool rand rraise rthe rfree rchlorine rto r2 rppm
2. rAssuming rthat ryour rlocal rhealth rdepartment rrequires ryou rto rraise rthe rfree rchlorine rto r5
rppm, rhow rmuch rsodium rhypochlorite rwould rbe rneeded rto rraise rthe rfree rchlorine rin rthe
rpool rin rquestion r#1 rto rthat rlevel? r- rCorrect rAnswer r- r3.5 rgallons
3. rYou rare rthe rCPO rfor ran rindoor rhealth rclub rpool. rThe rfacility rmanager rinforms ryou rthat
rhe ris rreceiving rcomplaints rabout ra rstrong rchlorine rodor rin rthe rpool rarea, rand rseveral
rmembers rhave rcomplained rof reye rirritation. rThe rmost rlikely rcause rof rthese rcomplaints
ris: r- rCorrect rAnswer r- rhigh rlevels rof rchloramines rin rthe rpool
4. rTo rdetermine rthe rlevel rof rchloramines rin rthe rwater, ryou rshould rdo rwhich rof rthe
rfollowing? r- rCorrect rAnswer r- rtest rfor rtotal rchlorine rand rfree rchlorine, rthen rsubtract rthe
rfree rchlorine rnumber rfrom rthe rtotal rchlorine
5. rYou roperate ra r45,000 rgallon rindoor rpool, rand rupon rdoing ryour rhourly rchemical rtests
ryou robserve rthe rfollowing rreadings:Total ravailable rchlorine ris r2.2 rFree ravailable rchlorine
ris r1.4 rand rpH ris r7.6 rWhat ris rthe rlevel rof rchloramines rin rthis rpool? r- rCorrect rAnswer r- r0.8
7. rYou rare rthe roperator rof ra r330,000 rgallon routdoor rpool. rYour rlocal rhealth rdepartment
rrequires ryou rto rperform ra rwater rbalance rcalculation ronce rmonthly. rUpon rperforming rthe
rwater rtests rnecessary rto rperform rthis rcalculation, ryou robserve rthe rfollowing rreadings rin
ryour rpool: rTotal ralkalinity ris r50 rppm rpH ris r7.2 rCalcium rHardness ris r150 rppm
rTemperature ris r76 rdegrees rF rTotal rDissolved rSolids ris r500 rppm rUsing rthese rreadings,
rwhat ris rthe rSaturation rIndex rfor rthis rpool? r- rCorrect rAnswer r- r-0.8
8. rTo radjust rthe rtested rTotal rAlkalinity rin rthe rpool rin rquestion r#7 rto ran racceptable rlevel,
rwhich rchemical rwould rbe rmost rappropriate? r- rCorrect rAnswer r- rSodium rBicarbonate
9. rTo radjust rthe rtested rpH rin rthe rpool rin rquestion r#7 rto ran racceptable rlevel, rwhich
rchemical rwould rbe rmost rappropriate? r- rCorrect rAnswer r- rSodium rCarbonate
, 10. rYou rare rthe rCPO rfor ra r28,000 rgallon rhotel rpool. rYou rperform ra rwater rbalance
rchemical rtest, rand rto ryour rsurprise, rthe rCalcium rHardness ris ronly r100 rppm. rHow rmuch
rcalcium rchloride r(77%) rwould rbe rrequired rto rincrease rthis rto r400 rppm?" r- rCorrect
rAnswer r- r100.8 rlbs.
11. rYou rare rthe rCPO rfor ra r100 rfoot rlong, r50 rfoot rwide rcountry rclub rpool. rThe raverage
rdepth rof rthis rpool ris r7 rfeet. rYou rreturn rto rthe rpool ron rMonday rmorning, rafter ra rrare
rweekend roff, rand rfind rthat rthe rauto-fill rfeature rhas rfailed rto rwork, rand rthe rpool rwater rlevel
ris rfour rinches rtoo rlow. rHow rmany rgallons rof rwater rmust rbe radded rto rreturn rthe rwater rto
rthe rproper rlevel? r- rCorrect rAnswer r- r12,495 rgallons
12. rYou rare rthe roperator rof ra r3,000 rgallon rhealth rclub rspa, rwhich rhas ran raverage rof r100
rusers rper rday. rAccording rto rthe rCPO rHandbook, rhow roften rshould rthe rwater rin rthis rspa
rbe rchanged? r- rCorrect rAnswer r- r10 rdays
"13. rYou rare rthe rCPO rfor ra rlarge rmunicipal rswimming rpool. rThis rpool rhas ra rvolume rof
r560,000 rgallons rof rwater,and rhas ran raverage rdaily rbather rload rof r1300 rpeople. rThe rpool
ris roperated rusing rhigh rrate rpressure rsand rfilters. rHow roften rshould ryou rbackwash rthe
rfilters?" r- rCorrect rAnswer r- rWhen rthe rinfluent rand reffluent rgauges rare r10 rto r20 rpsi rapart
14. rIn rtesting rfor rChlorine/Bromine rin ra rcommercial rpool, rDPD ris rpreferred rover rOTO
rbecause: r- rCorrect rAnswer r- rOTO ronly rtests rfor rTotal rChlorine
15. rSafety rand rrescue requipment rshould ralways rbe: r- rCorrect rAnswer r- rKept reasily
raccessible raround rthe rpool
16. rWhich rtype rof rfilter rsystem rwill rremove rthe rsmallest rmicron rparticles? r- rCorrect
rAnswer r- rdiatomaceous rearth
17. rIf rthe rpump rfails rto rprime, rwhich rof rthe rfollowing rdoes rnot rhave rto rbe rchecked? r-
rCorrect rAnswer r- rfilter rsystem rpressure ris rtoo rhigh
18. rOxidation rReduction rPotential rtesting r(ORP) ris rmeasured rin? r- rCorrect rAnswer r- rmV
19. rHigh rcalcium rhardness rcan rresult rin rwhat rcondition? r- rCorrect rAnswer r- rcloudy rwater
20. rHead rfirst rentry rdives rare: r- rCorrect rAnswer r- ronly rallowed rin rareas rof rthe rpool rthat
rare rnot rmarked ras r'NO rDIVING'
21. rOpening rand rclosing rchecklists: r- rCorrect rAnswer r- rall rof rthe rabove
22. rYou rcan rbecome rsick rfrom ringesting rwater rinfected rwith rLegionella rbacteria r- rCorrect
rAnswer r- rfalse
23. rChanneling rof rfilters roccurs rwhen: r- rCorrect rAnswer r- rthe rFMR ris rexceeded, rand
rwater rcuts ra rchannel rthrough rthe rmedia
