In 2025, Costain Group 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 | 660,713.47a | 811,146a | 340,789a | |
Total Waste Recovered | 643,603.24a | 786,546a | 339,641a | |
Total Hazardous Waste Generated | 31,440.68a | N/A | N/A | |
Non-Hazardous Waste Disposed | N/A | N/A | N/A |
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In 2025, Costain Group generated a total of 660,713metric tonnes of waste.a
Of this amount, 97.41% of Costain Group's total waste generated was recovered through methods such as recycling, reuse, or composting, while 2.59% was disposed of through landfilling, incineration, or combustion.a
In 2025, Costain Group reported a total waste generation of 660,713 metric tonnes, of which 97.41% was recovered through recycling, reuse, or composting.This high recovery rate suggests that Costain Group has implemented strong circular economy practices and actively prioritizes sustainable waste management.a
Since 2021, Costain Group's total waste generation increased by 24.7%, but declined by 18.55% in the year 2025, suggesting a potential shift toward more efficient material use or the early impact of waste reduction strategies.a
Over the same period, Costain Group's waste recovery rate remained stable both in the long term and in 2025, suggesting limited progress, or consistent recovery performance, without major shifts in strategy.a
Overall, Costain Group’s waste generation and recovery data show a mixed and inconsistent trend. A deeper analysis of the company's activities, industry benchmarks, and operational changes is needed to assess its sustainability performance more precisely.
In 2025, Costain Group generated a total of 660,713 metric tonnes of waste.a
Of this amount, 4.76% of Costain Group'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.95.24% was identified as non-hazardous waste, generally considered less harmful and subject to lighter regulatory controls.a
Since 2021, Costain Group's total waste generation rose by 24.7%, but dropped by 18.55% in 2025, indicating a possible turning point driven by improved waste-reduction practices or production slowdowns.a
Overall, Costain Group'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