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Thornhill Pool - Main Pool

6715 Centre Street N Calgary AB T2K 5C4 · Aquatic Facility

Official record from Alberta →

Inspection summary

Thornhill Pool - Main Pool has been inspected 12 times by Alberta Health Services (Environmental Public Health) since February 26, 2024. The most recent inspection, on July 16, 2026, recorded 1 infraction.

1 of 12 inspections on record found no infractions at all. In the past 12 months there were 3 inspections with 8 infractions recorded. The higher-risk findings here relate to: Pool and spa water quality, Chemicals and toxic substances and Food temperature control.

The number of infractions per inspection has stayed roughly the same over time.

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 20 times across 9 separate inspections, most recently on July 16, 2026. For example: Are the general safety devices and physical conditions in this pool providing a safe environment (Critical)?

  • Chemicals and toxic substancesHigher risk

    Pool chemicals such as chlorine and acid must be labelled, stored apart from each other and handled safely. Mixing them by mistake can release toxic gas, so storage and handling problems are treated seriously.

    Recorded 9 times across 9 separate inspections, most recently on May 4, 2026. For example: Is the chemical quality of the water in this pool satisfactory (Non-Critical)?

  • Food temperature controlHigher risk

    Inspectors check that anything that has to be kept at a set temperature, such as chilled or hot food, or equipment like sterilizers, stays in its safe range and that accurate thermometers are on hand. With food, temperature problems are one of the most common causes of food poisoning.

    Recorded 9 times across 9 separate inspections, most recently on May 4, 2026. For example: Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?

  • 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 9 times across 9 separate inspections, most recently on May 4, 2026. For example: Are proper testing, monitoring, and other records being properly maintained?

About this data

These results come from Alberta Health Services (Environmental 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.

12 inspections

  1. Monitoring Inspection

    1 infraction

    • 12. Are the general safety devices and physical conditions in this pool providing a safe environment (Critical)?
      • Pool water was slightly cloudy. - Ensure that water is adequately clear at all times.- Encourage patrons to shower before using the pool.- Increase free available chlorine and/or add fresh water.- Monitor bather's load - Inspect filtration system and perform backwashing as needed- Keep combined chlorine as long as possible.
  2. Risk Management Inspection

    3 infractions

    • 05. Is the chemical quality of the water in this pool satisfactory (Non-Critical)?
      • Repeat violation cited on August 25,2025:Combined chlorine was measured at 2.36 mg/l. High combined chlorine in pool water can cause discomfort and irritation for bathers.The inspector experienced itching and irritation of the eyes at the time of the inspection.Please keep combined chlorine as low as possible.Previous violation:Combined chlorine was measured at 2.26 ppm. High combined chlorine in pool water can cause discomfort and irritation for bathers.***Increase flow/turnover rate or dilute the basin with fresh water to bring down combined chlorine. Inform bathers about the importance of showering before entering the pool
    • 14. Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?
      • Skimmers were observed to have an excess of debris. Clogged skimmers can result in poor water quality by overworking the pumps, and reducing circulation.***Please routinely remove debris from the skimmers
    • 16. Are proper testing, monitoring, and other records being properly maintained?
      • Did not verify the chemicals used for pool water testing at the time of the inspection.Previous violation:Chemicals used for pool water testing were expired. Expired testing supplies can compromise the accuracy of chemical readings when assessing pool chemistry.***Remove and properly dispose of expired chemicals, and replace them with chemicals that are within their expiration date.
  3. Demand Inspection

    4 infractions

    • 02. Is the bacteriological quality of the water in this pool satisfactory (Critical)?
      • Water sample taken Apr 29 - total coliforms present.-Treat and resample
    • 05. Is the chemical quality of the water in this pool satisfactory (Non-Critical)?
      • Repeat violation cited on August 25,2025:Combined chlorine was measured at 2.36 mg/l. High combined chlorine in pool water can cause discomfort and irritation for bathers.The inspector experienced itching and irritation of the eyes at the time of the inspection.Please keep combined chlorine as low as possible.Previous violation:Combined chlorine was measured at 2.26 ppm. High combined chlorine in pool water can cause discomfort and irritation for bathers.***Increase flow/turnover rate or dilute the basin with fresh water to bring down combined chlorine. Inform bathers about the importance of showering before entering the pool
    • 14. Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?
      • Skimmers were observed to have an excess of debris. Clogged skimmers can result in poor water quality by overworking the pumps, and reducing circulation.***Please routinely remove debris from the skimmers
    • 16. Are proper testing, monitoring, and other records being properly maintained?
      • Did not verify the chemicals used for pool water testing at the time of the inspection.Previous violation:Chemicals used for pool water testing were expired. Expired testing supplies can compromise the accuracy of chemical readings when assessing pool chemistry.***Remove and properly dispose of expired chemicals, and replace them with chemicals that are within their expiration date.
  4. Monitoring Inspection

    3 infractions

    • 05. Is the chemical quality of the water in this pool satisfactory (Non-Critical)?
      • Repeat violation cited on August 25,2025:Combined chlorine was measured at 2.36 mg/l. High combined chlorine in pool water can cause discomfort and irritation for bathers.The inspector experienced itching and irritation of the eyes at the time of the inspection.Please keep combined chlorine as low as possible.Previous violation:Combined chlorine was measured at 2.26 ppm. High combined chlorine in pool water can cause discomfort and irritation for bathers.***Increase flow/turnover rate or dilute the basin with fresh water to bring down combined chlorine. Inform bathers about the importance of showering before entering the pool
    • 14. Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?
      • Skimmers were observed to have an excess of debris. Clogged skimmers can result in poor water quality by overworking the pumps, and reducing circulation.***Please routinely remove debris from the skimmers
    • 16. Are proper testing, monitoring, and other records being properly maintained?
      • Did not verify the chemicals used for pool water testing at the time of the inspection.Previous violation:Chemicals used for pool water testing were expired. Expired testing supplies can compromise the accuracy of chemical readings when assessing pool chemistry.***Remove and properly dispose of expired chemicals, and replace them with chemicals that are within their expiration date.
  5. Demand Inspection

    6 infractions

    • 02. Is the bacteriological quality of the water in this pool satisfactory (Critical)?
      • Water sample result:Total coliforms were present.Sample collected by: Lovedeep S.Date of Collection: August 6, 2025Site of Collection: Main PoolTreat and resample.
    • 05. Is the chemical quality of the water in this pool satisfactory (Non-Critical)?
      • Combined chlorine was measured at 2.26 ppm. High combined chlorine in pool water can cause discomfort and irritation for bathers.***Increase flow/turnover rate or dilute the basin with fresh water to bring down combined chlorine. Inform bathers about the importance of showering before entering the pool
    • 06. Are the filtration, circulation and disinfection systems used to maintain water quality working properly (Critical)?
      • Flow meter was missing from the main pool. Flow meters track the flow rate of the pool to measure correct circulation and identify issues like clogged pumps or inefficient chemical dispersion.Operator has informed PHI that the flow meter was built into their automated system with a reading of 645 gpm. The flow rate is not in compliance with regulation (<6 hours).***Please install a physical flow meter that could be visibly assessed by all operators at all times and add flow meter check to the routine checklist.***Address flow rate to be in compliance with regulation with a turnover of <6 hours
    • 14. Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?
      • Skimmers were observed to have an excess of debris. Clogged skimmers can result in poor water quality by overworking the pumps, and reducing circulation.***Please routinely remove debris from the skimmers
    • 15. Has an owner or owner's agent, if any, been identified and is the pool operated and maintained by a qualified pool operator?
      • Pool operator responsible for day-to-day operation was not sufficiently qualified. Knowledge of the location of the flow meter or procedures relating to the flow meter was inadequate.***Please provide additional training for the pool operators responsible for day-to-day operation
    • 16. Are proper testing, monitoring, and other records being properly maintained?
      • Chemicals used for pool water testing were expired. Expired testing supplies can compromise the accuracy of chemical readings when assessing pool chemistry.***Remove and properly dispose of expired chemicals, and replace them with chemicals that are within their expiration date.
  6. Demand Inspection

    6 infractions

    • 02. Is the bacteriological quality of the water in this pool satisfactory (Critical)?
      • Water sample collected on 23/07/2025, tested positive for Total Coliforms.Treat and resample.
    • 05. Is the chemical quality of the water in this pool satisfactory (Non-Critical)?
      • Combined chlorine was measured at 2.26 ppm. High combined chlorine in pool water can cause discomfort and irritation for bathers.***Increase flow/turnover rate or dilute the basin with fresh water to bring down combined chlorine. Inform bathers about the importance of showering before entering the pool
    • 06. Are the filtration, circulation and disinfection systems used to maintain water quality working properly (Critical)?
      • Flow meter was missing from the main pool. Flow meters track the flow rate of the pool to measure correct circulation and identify issues like clogged pumps or inefficient chemical dispersion.Operator has informed PHI that the flow meter was built into their automated system with a reading of 645 gpm. The flow rate is not in compliance with regulation (<6 hours).***Please install a physical flow meter that could be visibly assessed by all operators at all times and add flow meter check to the routine checklist.***Address flow rate to be in compliance with regulation with a turnover of <6 hours
    • 14. Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?
      • Skimmers were observed to have an excess of debris. Clogged skimmers can result in poor water quality by overworking the pumps, and reducing circulation.***Please routinely remove debris from the skimmers
    • 15. Has an owner or owner's agent, if any, been identified and is the pool operated and maintained by a qualified pool operator?
      • Pool operator responsible for day-to-day operation was not sufficiently qualified. Knowledge of the location of the flow meter or procedures relating to the flow meter was inadequate.***Please provide additional training for the pool operators responsible for day-to-day operation
    • 16. Are proper testing, monitoring, and other records being properly maintained?
      • Chemicals used for pool water testing were expired. Expired testing supplies can compromise the accuracy of chemical readings when assessing pool chemistry.***Remove and properly dispose of expired chemicals, and replace them with chemicals that are within their expiration date.
  7. Demand Inspection

    6 infractions

    • 03. Is the bacteriological quality of the water in this pool satisfactory (Non-Critical)?
      • Water sample collected on 16/07/2025, had a HPC of 140 CFC/mL.Treat and resample.
    • 05. Is the chemical quality of the water in this pool satisfactory (Non-Critical)?
      • Combined chlorine was measured at 2.26 ppm. High combined chlorine in pool water can cause discomfort and irritation for bathers.***Increase flow/turnover rate or dilute the basin with fresh water to bring down combined chlorine. Inform bathers about the importance of showering before entering the pool
    • 06. Are the filtration, circulation and disinfection systems used to maintain water quality working properly (Critical)?
      • Flow meter was missing from the main pool. Flow meters track the flow rate of the pool to measure correct circulation and identify issues like clogged pumps or inefficient chemical dispersion.Operator has informed PHI that the flow meter was built into their automated system with a reading of 645 gpm. The flow rate is not in compliance with regulation (<6 hours).***Please install a physical flow meter that could be visibly assessed by all operators at all times and add flow meter check to the routine checklist.***Address flow rate to be in compliance with regulation with a turnover of <6 hours
    • 14. Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?
      • Skimmers were observed to have an excess of debris. Clogged skimmers can result in poor water quality by overworking the pumps, and reducing circulation.***Please routinely remove debris from the skimmers
    • 15. Has an owner or owner's agent, if any, been identified and is the pool operated and maintained by a qualified pool operator?
      • Pool operator responsible for day-to-day operation was not sufficiently qualified. Knowledge of the location of the flow meter or procedures relating to the flow meter was inadequate.***Please provide additional training for the pool operators responsible for day-to-day operation
    • 16. Are proper testing, monitoring, and other records being properly maintained?
      • Chemicals used for pool water testing were expired. Expired testing supplies can compromise the accuracy of chemical readings when assessing pool chemistry.***Remove and properly dispose of expired chemicals, and replace them with chemicals that are within their expiration date.
  8. Risk Management Inspection

    6 infractions

    • 03. Is the bacteriological quality of the water in this pool satisfactory (Non-Critical)?
      • Water samples collected on 02/04/2025 at 05:55 had a Heterotrophic Plate Count (HPC) values of 510 CFU/mL.Treat and resample.
    • 05. Is the chemical quality of the water in this pool satisfactory (Non-Critical)?
      • Combined chlorine was measured at 2.26 ppm. High combined chlorine in pool water can cause discomfort and irritation for bathers.***Increase flow/turnover rate or dilute the basin with fresh water to bring down combined chlorine. Inform bathers about the importance of showering before entering the pool
    • 06. Are the filtration, circulation and disinfection systems used to maintain water quality working properly (Critical)?
      • Flow meter was missing from the main pool. Flow meters track the flow rate of the pool to measure correct circulation and identify issues like clogged pumps or inefficient chemical dispersion.Operator has informed PHI that the flow meter was built into their automated system with a reading of 645 gpm. The flow rate is not in compliance with regulation (<6 hours).***Please install a physical flow meter that could be visibly assessed by all operators at all times and add flow meter check to the routine checklist.***Address flow rate to be in compliance with regulation with a turnover of <6 hours
    • 14. Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?
      • Skimmers were observed to have an excess of debris. Clogged skimmers can result in poor water quality by overworking the pumps, and reducing circulation.***Please routinely remove debris from the skimmers
    • 15. Has an owner or owner's agent, if any, been identified and is the pool operated and maintained by a qualified pool operator?
      • Pool operator responsible for day-to-day operation was not sufficiently qualified. Knowledge of the location of the flow meter or procedures relating to the flow meter was inadequate.***Please provide additional training for the pool operators responsible for day-to-day operation
    • 16. Are proper testing, monitoring, and other records being properly maintained?
      • Chemicals used for pool water testing were expired. Expired testing supplies can compromise the accuracy of chemical readings when assessing pool chemistry.***Remove and properly dispose of expired chemicals, and replace them with chemicals that are within their expiration date.
  9. Demand Inspection

    6 infractions

    • 03. Is the bacteriological quality of the water in this pool satisfactory (Non-Critical)?
      • Water samples collected on 02/04/2025 at 05:55 had a Heterotrophic Plate Count (HPC) values of 510 CFU/mL.Treat and resample.
    • 05. Is the chemical quality of the water in this pool satisfactory (Non-Critical)?
      • Combined chlorine was measured at 2.26 ppm. High combined chlorine in pool water can cause discomfort and irritation for bathers.***Increase flow/turnover rate or dilute the basin with fresh water to bring down combined chlorine. Inform bathers about the importance of showering before entering the pool
    • 06. Are the filtration, circulation and disinfection systems used to maintain water quality working properly (Critical)?
      • Flow meter was missing from the main pool. Flow meters track the flow rate of the pool to measure correct circulation and identify issues like clogged pumps or inefficient chemical dispersion.Operator has informed PHI that the flow meter was built into their automated system with a reading of 645 gpm. The flow rate is not in compliance with regulation (<6 hours).***Please install a physical flow meter that could be visibly assessed by all operators at all times and add flow meter check to the routine checklist.***Address flow rate to be in compliance with regulation with a turnover of <6 hours
    • 14. Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?
      • Skimmers were observed to have an excess of debris. Clogged skimmers can result in poor water quality by overworking the pumps, and reducing circulation.***Please routinely remove debris from the skimmers
    • 15. Has an owner or owner's agent, if any, been identified and is the pool operated and maintained by a qualified pool operator?
      • Pool operator responsible for day-to-day operation was not sufficiently qualified. Knowledge of the location of the flow meter or procedures relating to the flow meter was inadequate.***Please provide additional training for the pool operators responsible for day-to-day operation
    • 16. Are proper testing, monitoring, and other records being properly maintained?
      • Chemicals used for pool water testing were expired. Expired testing supplies can compromise the accuracy of chemical readings when assessing pool chemistry.***Remove and properly dispose of expired chemicals, and replace them with chemicals that are within their expiration date.
  10. Monitoring Inspection

    5 infractions

    • 05. Is the chemical quality of the water in this pool satisfactory (Non-Critical)?
      • Combined chlorine was measured at 2.26 ppm. High combined chlorine in pool water can cause discomfort and irritation for bathers.***Increase flow/turnover rate or dilute the basin with fresh water to bring down combined chlorine. Inform bathers about the importance of showering before entering the pool
    • 06. Are the filtration, circulation and disinfection systems used to maintain water quality working properly (Critical)?
      • Flow meter was missing from the main pool. Flow meters track the flow rate of the pool to measure correct circulation and identify issues like clogged pumps or inefficient chemical dispersion.Operator has informed PHI that the flow meter was built into their automated system with a reading of 645 gpm. The flow rate is not in compliance with regulation (<6 hours).***Please install a physical flow meter that could be visibly assessed by all operators at all times and add flow meter check to the routine checklist.***Address flow rate to be in compliance with regulation with a turnover of <6 hours
    • 14. Is the pool maintained in a clean and sanitary condition, good repair and are temperatures being properly regulated?
      • Skimmers were observed to have an excess of debris. Clogged skimmers can result in poor water quality by overworking the pumps, and reducing circulation.***Please routinely remove debris from the skimmers
    • 15. Has an owner or owner's agent, if any, been identified and is the pool operated and maintained by a qualified pool operator?
      • Pool operator responsible for day-to-day operation was not sufficiently qualified. Knowledge of the location of the flow meter or procedures relating to the flow meter was inadequate.***Please provide additional training for the pool operators responsible for day-to-day operation
    • 16. Are proper testing, monitoring, and other records being properly maintained?
      • Chemicals used for pool water testing were expired. Expired testing supplies can compromise the accuracy of chemical readings when assessing pool chemistry.***Remove and properly dispose of expired chemicals, and replace them with chemicals that are within their expiration date.
  11. Demand Inspection

    1 infraction

    • 02. Is the bacteriological quality of the water in this pool satisfactory (Critical)?
      • TC Present Treat and resubmit sample.
  12. Monitoring Inspection

    0 infractions

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