MARYLAND POOL OPERATOR STUDY EXAMS
GUIDE QUESTIONS AND ANSWERS SET A+
✔✔low pH does what for HOCl and HOBr - ✔✔more avaliable
✔✔high pH does what for HOCl and HOBr - ✔✔less avaliable
✔✔Chlorine does what to pH? - ✔✔raises pH
✔✔Pressure differential high rate sand filter - ✔✔15 psi
✔✔Pressure differential cartridge filer, DE filter - ✔✔10 psi
✔✔How does water return to the pool? - ✔✔return lines
✔✔How do you make a record official? - ✔✔sign it CPO
✔✔Why vacuum port closed? - ✔✔prevent suction entrapment
must be flush to the wall
✔✔How do you clean a sand or DE filter? - ✔✔Backwash
✔✔Why are spas more prone to bacteria? - ✔✔smaller amount of water
warmer water
higher bather load
✔✔Temperature of indoor pool - ✔✔88 max
✔✔temperature of spa - ✔✔104 max
✔✔temperature of therapy pool - ✔✔96 max
, ✔✔bromine level pool - ✔✔3.0-8.0 ppm
✔✔bromine level spa, wading/therapy pool - ✔✔4.0-8.0 ppm
✔✔combine chlorine and bromine level - ✔✔0-0.2 ppm
✔✔superchlorination range - ✔✔10-15 ppm
✔✔breakpoint chlorination range - ✔✔10-30 ppm
✔✔ operational public pool - ✔✔open for general admission; open to the public.
✔✔semi-public pool - ✔✔a pool at a facility that has pool use restricted to individuals.
usually members
✔✔how often do you need to fill out daily/weekly operation form - ✔✔every two hours or
more (operation form)
✔✔how often do you need to fill out pool and spa entrapment hazard checklist -
✔✔daily
✔✔how long do you need to keep your records for? what's an exception? - ✔✔3 years.
exception: minor gets injured. they can file until they turn 18. ex: 8 y/o has 10 years to
file.
✔✔9 possible immediate closure items: - ✔✔1. staff has improper credentials
2. disinfection levels aren't in legal ranges
3. pH isn't in legal range
4. poor clarity
5. loose, damaged, or missing suction outlet covers
6. fecal, vomit, or blood
7. recirculation/ disinfection systems not properly working
8. high/low water temp.
9. dangers
✔✔staffing requirements for public pool (Operator and lifeguard) - ✔✔operator- on site
at all times
lifeguard- always
✔✔staffing requirements for semi-public pool (Operator and lifeguard) - ✔✔operator- on
site/within 15 minutes call
lifeguard- not required
GUIDE QUESTIONS AND ANSWERS SET A+
✔✔low pH does what for HOCl and HOBr - ✔✔more avaliable
✔✔high pH does what for HOCl and HOBr - ✔✔less avaliable
✔✔Chlorine does what to pH? - ✔✔raises pH
✔✔Pressure differential high rate sand filter - ✔✔15 psi
✔✔Pressure differential cartridge filer, DE filter - ✔✔10 psi
✔✔How does water return to the pool? - ✔✔return lines
✔✔How do you make a record official? - ✔✔sign it CPO
✔✔Why vacuum port closed? - ✔✔prevent suction entrapment
must be flush to the wall
✔✔How do you clean a sand or DE filter? - ✔✔Backwash
✔✔Why are spas more prone to bacteria? - ✔✔smaller amount of water
warmer water
higher bather load
✔✔Temperature of indoor pool - ✔✔88 max
✔✔temperature of spa - ✔✔104 max
✔✔temperature of therapy pool - ✔✔96 max
, ✔✔bromine level pool - ✔✔3.0-8.0 ppm
✔✔bromine level spa, wading/therapy pool - ✔✔4.0-8.0 ppm
✔✔combine chlorine and bromine level - ✔✔0-0.2 ppm
✔✔superchlorination range - ✔✔10-15 ppm
✔✔breakpoint chlorination range - ✔✔10-30 ppm
✔✔ operational public pool - ✔✔open for general admission; open to the public.
✔✔semi-public pool - ✔✔a pool at a facility that has pool use restricted to individuals.
usually members
✔✔how often do you need to fill out daily/weekly operation form - ✔✔every two hours or
more (operation form)
✔✔how often do you need to fill out pool and spa entrapment hazard checklist -
✔✔daily
✔✔how long do you need to keep your records for? what's an exception? - ✔✔3 years.
exception: minor gets injured. they can file until they turn 18. ex: 8 y/o has 10 years to
file.
✔✔9 possible immediate closure items: - ✔✔1. staff has improper credentials
2. disinfection levels aren't in legal ranges
3. pH isn't in legal range
4. poor clarity
5. loose, damaged, or missing suction outlet covers
6. fecal, vomit, or blood
7. recirculation/ disinfection systems not properly working
8. high/low water temp.
9. dangers
✔✔staffing requirements for public pool (Operator and lifeguard) - ✔✔operator- on site
at all times
lifeguard- always
✔✔staffing requirements for semi-public pool (Operator and lifeguard) - ✔✔operator- on
site/within 15 minutes call
lifeguard- not required
