Summary of quantitative results
Guidelines for exceedances are based on:
Canada
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Chemistry tests
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Lake Simcoe in Ontario
East Holland River at Aurora Community Arboretum (AFLC) has data for hardness, oxygen, chlorine, ph, previous_weather, current_weather, water_temperature, air_temperature, conductivity, alkalinity, and current_weather_description from 29 September 2024 to 18 October 2025.