Great Lakes Water Chemistry at Drinking Water Intakes

Water chemistry and chlorophyll data collected at 22 sampling locations across the Great Lakes-St. Lawrence River and Lake Simcoe. The dataset is maintained by the Government of Ontario and was last updated in March 2026.

Use Cases

• Analyze water chemistry trends across the 22 sampling locations to monitor regional water quality.
• Model chlorophyll concentrations as an indicator of algal biomass in drinking water sources.
• Assess spatial variations in water chemistry between the Great Lakes-St. Lawrence River and Lake Simcoe intakes.

Strengths

• Data covers 22 distinct sampling locations, providing spatial breadth.
• Maintained by a government authority (Government of Ontario), suggesting official oversight.
• Recent update in March 2026 indicates active maintenance.

Limitations

• Unknown sample size and row count limits statistical analysis.
• Data format includes PDF and HTML, which may require extraction for computational use.
• Column schema is unspecified, complicating direct programmatic use.

Provenance

Source

Government of Ontario

Collection Method

Sampling at drinking water intake locations.

Time Range

null

Freshness

Last updated 2026-03 18.

Geography

Great Lakes-St. Lawrence River and Lake Simcoe, Ontario, Canada.