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Sonesta ES Suites

355 South Park Rd, Thornhill, ON, L3T 7W2 · Class B

Official record from York Region →

Inspection summary

Sonesta ES Suites has been inspected 9 times by York Region Public Health since November 1, 2024. The most recent inspection, on August 7, 2026, found no infractions.

7 of 9 inspections on record found no infractions at all. In the past 12 months there were 4 inspections with 0 infractions recorded. The higher-risk findings here relate to: Pool and spa water quality.

The last 6 inspections in a row found no infractions. 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 2 separate inspections, most recently on May 6, 2025. For example: Total alkalinity is within required range

  • 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 November 1, 2024. For example: Emergency and operational procedures are implemented where required

  • Equipment and utensilsLower risk

    Pumps, filters, chemical feeders and safety equipment such as lifebuoys, reaching poles and first-aid kits must be present and working. Missing safety equipment can matter a great deal in an emergency.

    Recorded once on November 1, 2024. For example: Safety equipment available and in good repair (Pool, Spa > 3 m, Wading Pool)

  • 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 May 6, 2025. For example: Water clarity is satisfactory

About this data

These results come from York Region Public Health, 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.

9 inspections

  1. Compliance Inspection

    0 infractions

  2. Compliance Inspection

    0 infractions

  3. Compliance Inspection

    0 infractions

  4. Compliance Inspection

    0 infractions

  5. Compliance Inspection

    0 infractions

  6. Re-inspection

    0 infractions

  7. Compliance Inspection

    4 infractions

    • Total alkalinity is within required range
      • Fail to maintain total alkalinity within range of 60 mg/L to 180 mg/L
    • pH is within range of 7.2 to 7.8
      • Fail to maintain pH within range of 7.2 to 7.8
    • Water clarity is satisfactory
      • Fail to ensure pool water clear enough to permit black disc at deepest point to be clearly visible from a point on the deck 9 meters away
    • The premise appears to be free from conditions that might be a health hazard
      • Fail to maintain facility in safe condition
  8. Compliance Inspection

    0 infractions

  9. Compliance Inspection

    5 infractions

    • Total alkalinity is within range of 80 mg/L to 120 mg/L
      • Fail to maintain total alkalinity within range of 80 mg/L to 120 mg/L
    • pH is within range of 7.2 to 7.8
      • Fail to maintain pH within range of 7.2 to 7.8
    • Facility conducts required tests at appropriate intervals, as required
      • Fail to check TA, pH, FAC, TC or TBr, water clarity and water temperature (Spa) at least every 4 hours during daily use period where automatic sensing device is used
    • Emergency and operational procedures are implemented where required
      • Fail to ensure written emergency procedures are implemented at public pool
    • Safety equipment available and in good repair (Pool, Spa > 3 m, Wading Pool)

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