Datasets
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Tables of Drinking Water Threats
Ministry: Environment, Conservation and Parks
We've made tables that include the 21 drinking water quality threat activities, set out in O. Reg. 287/07, which may pose a risk to a municipal drinking water supply. The...Resource formats:
- XLSX
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Lake Ontario Downstream Tributary Water Chemistry Monitoring
Ministry: Environment, Conservation and Parks
From 2018 to 2023, ministry staff collected water quality samples year-round from seven rivers that flow into Lake Ontario in the Greater Toronto Area. They did this to...Resource formats:
- XLSX
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Annual Air Pollutant Statistics
Ministry: Environment, Conservation and Parks
This dataset provides a summary of annual air pollution statistics from 1995 to the current available year for six air pollutants: Carbon Monoxide Oxides of Nitrogen (NO, NO2,...Resource formats:
- XLSX
- TXT
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Ontario Typical Range Soil Chemistry
Ministry: Environment, Conservation and Parks
Concentration levels from soil sampled in urban and rural parklands in the province. Data includes: station name and location (rounded to 1 km precision) sample date results...Resource formats:
- SHP
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Environmental Occurrences and Spills
Ministry: Environment, Conservation and Parks
This dataset consists of information from reports received by the Spills Action Centre (SAC). They are generated and completed by SAC following the initial report of a spill....Resource formats:
- CSV
- XLSX
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Well Records
Ministry: Environment, Conservation and Parks
This dataset provides information submitted by well contractors as prescribed by Regulation 903, and is stored in the Water Well Information System (WWIS). Spatial information...Resource formats:
- ZIP
- SHP
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Multi-Watershed Nutrient Study
Ministry: Environment, Conservation and Parks
The Multi-Watershed Nutrient Study collected stream water samples from 11 small agricultural watersheds between 2014 and 2020. Samples were collected during flow events like...Resource formats:
- ZIP
- CSV
- SHP
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Environmental Compliance Reports
Ministry: Environment, Conservation and Parks
Every year, the Ministry of the Environment Conservation and Parks publicly releases the Environmental Compliance Report on the Ontario Data Catalogue. In Ontario, all...Resource formats:
- CSV
- XLSX
- ZIP
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Ontario Cage Aquaculture Water and Sediment Quality
Ministry: Environment, Conservation and Parks
This dataset contains measurements of water (chemistry and algal pigments) and sediment (chemistry and size fraction) quality in nearshore areas of Lake Huron surrounding cage...Resource formats:
- CSV
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Drinking Water Quality and Enforcement
Ministry: Environment, Conservation and Parks
Ontario has a comprehensive set of measures and regulations to help ensure the safety of drinking water. The following dataset contains information about the drinking water...Resource formats:
- ZIP
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Lake Water Quality at Drinking Water Intakes
Ministry: Environment, Conservation and Parks
This data set includes information on sampling locations, water chemistry and chlorophyll collected at 18 locations in the Great Lakes-St. Lawrence River and 4 locations in Lake...Resource formats:
- XLSX
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Water systems that sought regulatory relief due to COVID-19 pandemic
Ministry: Environment, Conservation and Parks
Ministry of the Environment, Conservation and Parks allowed temporary system-specific regulatory relief to address challenges posed by the pandemic such as operational...Resource formats:
- CSV
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Permit to Take Water
Ministry: Environment, Conservation and Parks
Companies or organizations who take over 50,000 litres of water/day from a lake, river, stream or groundwater source, must obtain a Permit to Take Water from the Ministry of the...Resource formats:
- SHP
- XLS
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Industrial Wastewater Discharges
Ministry: Environment, Conservation and Parks
Industrial wastewater monitoring data submitted quarterly to the Ministry of the Environment. This reporting is required by the Effluent Monitoring and Effluent Limits...Resource formats:
- XLS
- XLSX
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Caribou Range Boundary
Ministry: Environment, Conservation and Parks
Shows areas where the health and prevalence of caribou can be linked to the attributes of the land that supports them. Ontario's Woodland Caribou Recovery Strategy (2008)...Resource formats:
- SHP
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Stream Neonicotinoid Monitoring Study
Ministry: Environment, Conservation and Parks
The Ministry of the Environment, Conservation and Parks started the Multi-Media Monitoring Study in 2015, in support of Ontario's Pollinator Health Action Plan, to measure...Resource formats:
- XLSX
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Provincial (Stream) Water Quality Monitoring Network
Ministry: Environment, Conservation and Parks
Provides stream water quality monitoring data for a number of parameters, including total and dissolved nutrients, metals, and chloride. The Provincial (Stream) Water Quality...Resource formats:
- CSV
- XLSX
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Water Chemistry (Great Lakes Nearshore Areas)
Ministry: Environment, Conservation and Parks
Data is collected each year, according to the lake-by-lake cycle. Information includes: water chemistry physical conditions including light profiles approximately 80 index and...Resource formats:
- ZIP
- CSV
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Drinking Water Neonicotinoid Monitoring Study
Ministry: Environment, Conservation and Parks
The Ministry of the Environment, Conservation and Parks started a project to determine the potential levels and occurrence of neonicotinoid insecticides in Ontario source waters...Resource formats:
- XLSX
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Sediment Chemistry (Great Lakes Nearshore Areas)
Ministry: Environment, Conservation and Parks
Data is collected each year, according to the lake-by-lake cycle. Information includes: sediment chemistry approximately 80 index and reference stations throughout the Great...Resource formats:
- CSV