Thornlea Place - YCC 351
180 Dudley Avenue, Markham, Thornhill, ON L3T 4X2 · Class B
Inspection summary
Thornlea Place - YCC 351 has been inspected 4 times by York Region Public Health since June 2, 2025. The most recent inspection, on July 21, 2026, recorded 1 infraction.
1 of 4 inspections on record found no infractions at all. In the past 12 months there were 2 inspections with 1 infraction recorded. The higher-risk findings here relate to: Pool and spa water quality and Chemicals and toxic substances.
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 2 times across 2 separate inspections, most recently on July 22, 2025. For example:
pH is within required range
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 once on July 22, 2025. For example:
Chemical feeder is provided to administer chlorine, chlorine compound or a bromine compound
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 21, 2026. For example:
Other tests and records completed and signed
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.
4 inspections
- Compliance Inspection
1 infraction
- Other tests and records completed and signed
- Fail to determine and record concentration of cyanuric acid at least once a week, where applicable
- Other tests and records completed and signed
- Compliance Inspection
0 infractions
- Compliance Inspection
2 infractions
- pH is within required range
- Fail to maintain pH within range of 7.2 to 7.8
- Chemical feeder is provided to administer chlorine, chlorine compound or a bromine compound
- Fail to provide a chemical feeder to administer chlorine, chlorine compound or a bromine compound
- pH is within required range
- Compliance Inspection
1 infraction
- Free available chlorine (FAC) residual is within required range
- Fail to maintain free available chlorine (FAC) residual between 0.5 - 10 ppm (Pool, Spray/Splash Pad, Receiving Basin)
- Free available chlorine (FAC) residual is within required range
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