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Mona Lisa

191 Nonquon Rd, Oshawa ON L1G 6Z2 · Pool - Class B

Official record from Durham Region →

Inspection summary

Mona Lisa has been inspected 5 times by Durham Region Health Department since July 15, 2025. The most recent inspection, on July 3, 2026, recorded 1 infraction.

None of the 5 inspections on record were free of infractions. In the past 12 months there were 4 inspections with 10 infractions recorded. The higher-risk findings here relate to: Pool and spa water quality.

Recent inspections have recorded fewer infractions than earlier ones, so the record is improving.

What these findings mean

Health authorities word their findings differently, so we group them by what they mean for the people using the facility. Higher-risk findings are the ones that could directly cause illness or injury, such as water that is not properly treated.

  • Pool and spa water qualityHigher risk

    For pools, spas and splash pads, inspectors test disinfectant levels, pH and water clarity, and check safety equipment. Water that is not properly treated can spread skin, ear and stomach infections.

    Recorded 4 times across 4 separate inspections, most recently on July 3, 2026. For example: pH is within range of 7.2 to 7.8

  • Building, plumbing and upkeepLower risk

    Decks, ladders, fencing, drains, washrooms and signage must be in good repair. Damaged drain covers or broken fencing can be real safety hazards, while most other upkeep issues are lower risk.

    Recorded 3 times across 3 separate inspections, most recently on July 3, 2026. For example: Premises is maintained free from every serious condition that may be a health hazard

  • Permits, records and postingLower risk

    Operating permits, water-test logs, posted bather rules and emergency procedures. Daily test logs are how operators show the water was checked and treated between inspections.

    Recorded once on July 3, 2026. For example: Shower signs posted at each shower and every entrance to the deck used by bathers

  • Other findingsLower risk

    Findings that do not fit the categories above, such as follow-ups that confirm an earlier violation was corrected, or requirements specific to this type of facility.

    Recorded 3 times across 2 separate inspections, most recently on July 2, 2026. For example: Water clarity satisfactory

About this data

These results come from Durham Region Health Department, which inspects food premises and other public facilities in this area. We republish the authority's public disclosure data and refresh it regularly; the official record is the final word.

5 inspections

  1. Re-Inspection

    1 infraction

    • Shower signs posted at each shower and every entrance to the deck used by bathers
      • Fail to post shower signs at every entrance to the deck used by bathers
      • Operator to ensure correct wording of the signs are as follows: "Each bather shall take a shower using warm water and soap and thoroughly rinse off all soap before entering / re-entering the deck"
  2. Re-Inspection

    2 infractions

    • pH is within range of 7.2 to 7.8
      • CLOSE POOL
      • Fail to maintain pH within acceptable range
      • Operator to ensure pH is maintained within range of 7.2 to 7.8
    • Premises is maintained free from every serious condition that may be a health hazard
      • CLOSE POOL
      • Fail to ensure public pool is free from every serious condition that may be a health hazard
      • Operator to ensure public pool is free from every serious condition that may be a health hazard
  3. Re-Inspection

    3 infractions

    • Water clarity satisfactory
      • CLOSE POOL
      • Fail to ensure black disc is clearly visible 9 m away
      • Operator to ensure black disc is clearly visible 9 m away
    • Stabilized free available chlorine (FAC) within range of 1-10 ppm (Outdoor Pools Only)
      • CLOSE POOL
      • Fail to maintain stabilized FAC within range of 1-10 ppm
      • Operator to ensure stabilized FAC is maintained within range of 1-10 ppm
    • Premises is maintained free from every serious condition that may be a health hazard
      • CLOSE POOL
      • Fail to ensure public pool is free from every serious condition that may be a health hazard
      • Operator to ensure public pool is free from every serious condition that may be a health hazard
  4. Routine

    4 infractions

    • Recirculation system of water facility is in good working condition (including automatic dosing device)
      • Fail to ensure water not less than three times the pool capacity is filtered and disinfected daily
      • Operator to provide a method to demonstrate that 3 times the total capacity of the pool is filtered and disinfected daily.
    • pH is within range of 7.2 to 7.8
      • CLOSE POOL
      • Fail to maintain pH within acceptable range
      • Operator to ensure pH is maintained within range of 7.2 to 7.8
    • Emergency telephone is present and operational
      • CLOSE POOL
      • Fail to ensure telephone is operational
      • Operator to ensure emergency telephone is operational
    • Premises is maintained free from every serious condition that may be a health hazard
      • CLOSE POOL
      • Fail to ensure public pool is free from every serious condition that may be a health hazard
      • Operator to ensure public pool is free from every serious condition that may be a health hazard
  5. Routine

    1 infraction

    • Pool, deck and walls maintained in a sanitary condition, safe and free from hazards
      • Fail to ensure deck surfaces free from hazards
      • Operator to maintain deck surfaces free from hazards

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