In 2025, Cameco conducted an environmental assessment and disclosed corporate waste management data in accordance with recognized sustainability reporting standards.The company provided a breakdown of its waste by type (hazardous vs non-hazardous) and treatment method (recovery vs disposal), enabling greater transparency into its waste handling and environmental practices.
| Metric (tonnes) | 2025 | 2024 | 2023 | 2022-2019 |
|---|---|---|---|---|
Total Waste Generated | 289,721a | 298,495a | 214,481a | |
Total Waste Recovered | N/A | N/A | N/A | |
Total Hazardous Waste Generated | 314a | 297a | 497a | |
Non-Hazardous Waste Disposed | 2,275a | 4,177a | 1,362a |
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In 2025, Cameco generated a total of 289,721 metric tonnes of waste.a
Of this amount, 0.11% of Cameco's total waste generated of was classified as hazardous waste, characterized by properties such as toxicity, flammability, corrosiveness, or reactivity that may pose risks to human health, ecosystems, or the environment.0.95% was identified as non-hazardous waste, generally considered less harmful and subject to lighter regulatory controls.In addition, 2.1% of the total waste was reported as radioactive, requiring specialized handling and long-term containment due to its potential radiological risks.The remaining 98.94% was either treated using unspecified methods or not clearly categorized.a
Since 2023, Cameco's total waste generation rose by 35.08%, but dropped by 2.94% in 2025, indicating a possible turning point driven by improved waste-reduction practices or production slowdowns.a
Over the same period, the share of hazardous waste decreased by 53.23%, yet rose by 8.93% in 2025, potentially signaling operational variability, temporary setbacks, or less effective hazardous waste mitigation in the short term.a
Overall, Cameco's waste and hazardousness trends are mixed or inconclusive. A more detailed review of its materials, industry standards, and operational changes would help clarify the net environmental impact of its waste strategy.a
In 2025, Cameco reported that 314 metric tonnes of its total waste output were classified as hazardous. This represents 0.11% of its overall waste generation.a
The company treated this hazardous waste using a combination of methods.A majority (53.82%) was diverted from disposal through recovery-oriented treatments such as recycling or reuse. This suggests that Cameco has established processes to reduce the environmental burden of its most harmful waste streams.a