2027 Maryland Pool Operator Guide with
Complete Solutions
2 tasks of sanitizer - ANSWER-1. disinfection of disease organisms
2. oxidation or organic waste
4 basic pool filters used - ANSWER--rapid rate sand
-fiber cartridge
-high rate sand
-diatomaceous earth (DE)
5 types of entrapment - ANSWER-1. hair
2. limb
3. body suction
4. mechanical
5. eciseration
5 types of pool/spa surfacing - ANSWER--paint
-tile
-fiberglassing
-plaster
-delifol (PVC) membrane
5 types of valves - ANSWER-gate
ball
wafer
slide
roatry multiport
9 possible immediate closure items: - ANSWER-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
Any issues with pH or alkalinity or test kit? - ANSWER-high chlorine
at what speed compared to stabilized chlorine does bromine react to UV light -
, ANSWER-faster
at what speed compared to unstabilized chlorine does bromine react to UV light -
ANSWER-slower - cyanuric acid stabilizes chlorine
bromine cant handle UV light
breakpoint chlorination - ANSWER-a procedure used to reduce the inorganic
combined chlorine concentrations
breakpoint chlorination range - ANSWER-10-30 ppm
brominators are what type of chemical feeder - ANSWER-erosion feeders
bromine is much less dependant on what than chlorine for its reactivity? - ANSWER-
pH Br vs. Cl
bromine level pool - ANSWER-3.0-8.0 ppm
bromine level spa, wading/therapy pool - ANSWER-4.0-8.0 ppm
Calcium hardness (CH)? - ANSWER-the measure of calcium ions in the water.
CH ideal range (pool and spa) - ANSWER-pool and spa- 200-400 ppm
CH legal range- - ANSWER-150-400 ppm
CH method/chemical to decrease - ANSWER-dilute the water by adding water that
contains less calcium
CH method/chemical to increase - ANSWER-flake calcium chloride (into water)
chlorine and pH testing frequency - ANSWER-#1: 1/2 hour prior to opening
#2: between noon and 2 pm
#3 after close
what are you testing for?
Chlorine does what to pH? - ANSWER-raises pH
combine chlorine and bromine level - ANSWER-0-0.2 ppm
combined chlorine max - ANSWER-0.3 ppm
cyanuric acid maximum legal level - ANSWER-100 ppm
cyanuric acid minimum accepted level - ANSWER-30 ppm
discharge side of the pump - ANSWER-everything on the return side of the system
pressure side
Complete Solutions
2 tasks of sanitizer - ANSWER-1. disinfection of disease organisms
2. oxidation or organic waste
4 basic pool filters used - ANSWER--rapid rate sand
-fiber cartridge
-high rate sand
-diatomaceous earth (DE)
5 types of entrapment - ANSWER-1. hair
2. limb
3. body suction
4. mechanical
5. eciseration
5 types of pool/spa surfacing - ANSWER--paint
-tile
-fiberglassing
-plaster
-delifol (PVC) membrane
5 types of valves - ANSWER-gate
ball
wafer
slide
roatry multiport
9 possible immediate closure items: - ANSWER-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
Any issues with pH or alkalinity or test kit? - ANSWER-high chlorine
at what speed compared to stabilized chlorine does bromine react to UV light -
, ANSWER-faster
at what speed compared to unstabilized chlorine does bromine react to UV light -
ANSWER-slower - cyanuric acid stabilizes chlorine
bromine cant handle UV light
breakpoint chlorination - ANSWER-a procedure used to reduce the inorganic
combined chlorine concentrations
breakpoint chlorination range - ANSWER-10-30 ppm
brominators are what type of chemical feeder - ANSWER-erosion feeders
bromine is much less dependant on what than chlorine for its reactivity? - ANSWER-
pH Br vs. Cl
bromine level pool - ANSWER-3.0-8.0 ppm
bromine level spa, wading/therapy pool - ANSWER-4.0-8.0 ppm
Calcium hardness (CH)? - ANSWER-the measure of calcium ions in the water.
CH ideal range (pool and spa) - ANSWER-pool and spa- 200-400 ppm
CH legal range- - ANSWER-150-400 ppm
CH method/chemical to decrease - ANSWER-dilute the water by adding water that
contains less calcium
CH method/chemical to increase - ANSWER-flake calcium chloride (into water)
chlorine and pH testing frequency - ANSWER-#1: 1/2 hour prior to opening
#2: between noon and 2 pm
#3 after close
what are you testing for?
Chlorine does what to pH? - ANSWER-raises pH
combine chlorine and bromine level - ANSWER-0-0.2 ppm
combined chlorine max - ANSWER-0.3 ppm
cyanuric acid maximum legal level - ANSWER-100 ppm
cyanuric acid minimum accepted level - ANSWER-30 ppm
discharge side of the pump - ANSWER-everything on the return side of the system
pressure side
