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100+ Free MS Swimming Pools Practice Questions

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2026 Statistics

Key Facts: MS Swimming Pools Exam

70%

Passing Score

PSI MS Contractor Bulletin 4/23/2026

60 Q

Official Exam Questions

PSI MS Contractor Bulletin 4/23/2026

2 hours

Time Allowed

PSI MS Contractor Bulletin 4/23/2026

$120

PSI Exam Fee

PSI MS Contractor Bulletin 4/23/2026

Open book

Exam Format

PSI MS Contractor Bulletin 4/23/2026

MS Swimming Pools PSI trade exam: 60 questions, 70% pass, 2 hours, fee $120. Open-book MSBOC classification (bulletin 4/23/2026).

Sample MS Swimming Pools Practice Questions

Try these sample questions to test your MS Swimming Pools exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Turnover period is best defined as the time required to:
A.Pass a volume of water equal to the entire pool capacity through the circulation and filtration system
B.Raise the free-chlorine residual from zero to the ideal range
C.Backwash a high-rate sand filter until the sight glass runs clear
D.Heat the pool 10°F using the installed heater
Explanation: Turnover is the time needed for a volume of water equal to the pool capacity to pass through the pump, filter, and return inlets. ANSI/NSPI-1 2014 sizes public-pool equipment from this period (Table 8.1.1). Clarity and sanitizer distribution depend on meeting the required turnover, not on heating or a single backwash cycle.
2A public pool holds 36,000 gallons and must turn over in 6 hours. What minimum circulation flow is required?
A.60 gpm
B.80 gpm
C.100 gpm
D.120 gpm
Explanation: Required flow equals pool volume divided by turnover time in minutes. 36,000 gal ÷ (6 hr × 60 min/hr) = 36,000 ÷ 360 = 100 gpm. ANSI/NSPI-1 2014 requires the system to deliver that flow at the filter’s clean-media rating so the pool actually turns over in the design period.
3A circulation pump delivers 80 gpm. If the high-rate sand filter is sized at 20 gpm per square foot of media, what minimum filter area is required?
A.2 sq ft
B.4 sq ft
C.8 sq ft
D.16 sq ft
Explanation: Filter area equals design flow divided by the allowable filtration rate. 80 gpm ÷ 20 gpm/sq ft = 4 sq ft. NSF/ANSI/CAN 50-listed high-rate sand filters are commonly certified in the 15–20 gpm/sq ft range; using the listed rate keeps the filter within its certified loading.
4Circulation-system components such as filters, pumps, and chemical feeders for public pools shall comply with which standard in effect at the time of manufacture?
A.NSF/ANSI/CAN 50
B.ASTM C94
C.ACI 318
D.UL 508A
Explanation: ANSI/NSPI-1 2014 Sections 8.1.3 and 9.1.1 require circulation components and filters to comply with NSF/ANSI 50 (now NSF/ANSI/CAN 50). That standard covers performance, pressure, and health-effects listing for pool and spa equipment. ACI 318 and ASTM C94 address structural concrete, and UL 508A addresses industrial control panels.
5Per ANSI/NSPI-1 2014, the maximum water velocity in suction piping (other than copper) shall not exceed:
A.4 ft per second
B.6 ft per second
C.8 ft per second
D.10 ft per second
Explanation: Section 8.2 limits suction piping to 6 fps and discharge piping to 10 fps (8 fps for copper). The 1.5 fps limit applies through field-fabricated suction grates. Keeping suction velocity down reduces friction, cavitation risk, and the chance of collapsing thin-wall pipe.
6On a pressure-filter circulation system, the cleanable hair-and-lint strainer is installed:
A.On the suction line, upstream of the circulation pump
B.On the return line, downstream of the heater
C.Inside the filter tank above the laterals
D.On the waste line after the backwash valve
Explanation: ANSI/NSPI-1 2014 Section 10.3 requires a cleanable strainer or screen upstream of the pump on pressure-filter systems. The basket intercepts hair, leaves, and debris before they reach the impeller. A strainer after the pump or inside the filter cannot protect the pump.
7ANSI/NSPI-1 2014 requires at least one return inlet for each:
A.100 sq ft of pool surface, or fraction thereof
B.300 sq ft of pool surface, or fraction thereof
C.500 sq ft of pool surface, or fraction thereof
D.1,000 sq ft of pool surface, or fraction thereof
Explanation: Section 11.6 bases the number of return inlets on a minimum of one inlet per 300 sq ft of water surface, or fraction thereof. Enough inlets, properly aimed, produce uniform circulation and sanitizer residual. The 500 sq ft figure is the skimmer spacing rule, not the inlet rule.
8When automatic surface skimmers are the sole overflow system, ANSI/NSPI-1 2014 requires at least one skimmer for each:
A.200 sq ft of water surface
B.300 sq ft of water surface
C.500 sq ft of water surface
D.800 sq ft of water surface
Explanation: Section 12.3 requires at least one surface skimmer per 500 sq ft, or fraction thereof, of water surface. Recessed stairs, swimouts, and spas are omitted from that area. Skimmers must be placed to maintain an effective surface skim, and the overflow system must handle 100 percent of circulation flow.
9A Class B public pool has an average depth of 5 ft. Under ANSI/NSPI-1 2014 Table 8.1.1, what is the maximum permitted turnover period?
A.5 hours
B.6 hours
C.7.5 hours
D.8 hours
Explanation: Table 8.1.1 sets the Class A/B/C turnover at 1-1/2 times the average depth in feet, but not more than 6 hours. 1.5 × 5 ft = 7.5 hours, which exceeds the 6-hour cap, so 6 hours governs. The pump and filter must be sized for that 6-hour flow with clean media.
10On a sand-filter multiport valve, which setting sends water backward through the media and out the waste line?
A.Filter
B.Rinse
C.Backwash
D.Recirculate
Explanation: Backwash reverses flow through the sand bed so trapped dirt lifts and leaves through the waste port. After backwash, rinse resettles the bed before returning to filter. Recirculate bypasses the media entirely, and filter is the normal forward-flow service position.

About the MS Swimming Pools Exam

Mississippi Swimming Pools Contractor Examination is a classification trade examination administered by PSI for the Mississippi State Board of Contractors. The official open-book exam has 60 questions, a 70% passing standard, and 2 hours allowed. PSI examination fee is $120 per portion (bulletin updated 4/23/2026). This English-language MCQ bank is a study aid for the official content outline; it is not an official PSI form, does not replace the required Law and Business Management exam, and is not a substitute for MSBOC application review or the official open-book examination.

Questions

60 scored questions

Time Limit

2 hours

Passing Score

70%

Exam Fee

$120 (PSI Services LLC (for Mississippi State Board of Contractors))

MS Swimming Pools Exam Content Outline

23%

Filtration/Circulation Systems

Pool circulation and filtration

20%

Maintenance and Operation

Pool maintenance and operation

13%

Accessories and Associated Trades

Pool accessories

17%

Concrete, Shotcrete and Gunite

Pool shells

27%

Design

Pool and spa design standards

How to Pass the MS Swimming Pools Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 60 questions
  • Time limit: 2 hours
  • Exam fee: $120

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

MS Swimming Pools Study Tips from Top Performers

1Study only the approved references listed for this classification in the current PSI Mississippi Contractor bulletin (updated 4/23/2026)
2Practice open-book navigation with permanent tabs and indexes before test day
3Drill OSHA 29 CFR 1926 topics that appear across nearly every trade outline
4Confirm MSBOC classification scope and eligibility at msboc.us before scheduling with PSI
5All applicants must also pass Law and Business Management unless it is waived

Frequently Asked Questions

How many questions are on the MS Swimming Pools exam?

The official PSI examination has 60 scored questions (plus possible unscored experimental items). Passing is 70% within 2 hours.

How much does the MS Swimming Pools exam cost?

PSI lists $120 per examination portion (Candidate Information Bulletin updated 4/23/2026). MSBOC application fees are separate: $400 commercial or $50 residential. Additional classifications are $100 each.

Is the Mississippi contractor exam open book?

Yes. PSI administers MSBOC classification exams as open book. Only bulletin-listed approved references are allowed; temporary tabs such as Post-it notes are prohibited.

Do I still need the Law and Business Management exam?

Yes. MSBOC requires the Mississippi Law and Business Management exam (50 questions, 70%, 2 hours) of all applicants. Reciprocity may waive a trade exam in some cases but does not waive Law and Business.