Canadian Mine Water Quality Monitoring Under Environmental Effects Monitoring

Four times a year, mines depositing effluent under the Metal and Diamond Mining Effluent Regulations must collect water samples from exposure and reference areas. Parameters recorded include water temperature, dissolved oxygen, pH, hardness, alkalinity, electrical conductivity, salinity, and substances like arsenic, copper, cyanide, lead, nickel, radium 226, suspended solids, zinc, and un-ionized ammonia. Environment and Climate Change Canada publishes this data as reported by mines, with the last update recorded on 2026-05-29.

Use Cases

• Analyze seasonal trends in metal concentrations based on quarterly water quality monitoring.
• Model the relationship between effluent discharge and receiving environment parameters like pH and dissolved oxygen.
• Assess regulatory compliance for deleterious substances such as arsenic, copper, and cyanide based on discharge limits.
• Compare water quality in exposure areas versus reference areas to isolate mining impacts.

Strengths

• Monitoring is conducted quarterly, providing regular temporal data points.
• Parameters include a defined list of deleterious substances subject to regulatory limits, such as arsenic and cyanide.
• Data is collected from both exposure and reference areas, allowing for comparative analysis.

Limitations

• Data is published as reported by mines and has not been verified for accuracy and completeness.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Environment and Climate Change Canada

Collection Method

Reported by mines as part of mandatory Environmental Effects Monitoring studies under the Metal and Diamond Mining Effluent Regulations.

Freshness

Last updated 2026-05-29 17:32:57.200292; freshness should be verified.

Geography

Canada, focusing on areas surrounding metal and diamond mine final discharge points.