In 2025, NOS 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 | 806a | 749a | 947a | |
Total Waste Recovered | 792a | 745a | 944a | |
Total Hazardous Waste Generated | 21a | 9a | 15a | |
Non-Hazardous Waste Disposed | 13a | N/A | N/A |
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In 2025, NOS generated a total of 806metric tonnes of waste.a
Of this amount, 98.26% of NOS's total waste generated was recovered through methods such as recycling, reuse, or composting, while 1.61% was disposed of through landfilling, incineration, or combustion.a
In 2025, NOS reported a total waste generation of 806 metric tonnes, of which 98.26% was recovered through recycling, reuse, or composting.This high recovery rate suggests that NOS has implemented strong circular economy practices and actively prioritizes sustainable waste management.a
Since 2019, NOS's total waste generation decreased by 5.51%, yet rose by 7.61% in 2025, potentially indicating a temporary operational shift or inconsistency in waste management outcomes.a
Over the same period, NOS's waste recovery rate increased by 5.56%, but declined by 1.21% in 2025, potentially signaling volatility in waste treatment processes or shifting priorities in waste management.a
Overall, NOS’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, NOS generated a total of 806 metric tonnes of waste.a
Of this amount, 2.61% of NOS'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.97.27% was identified as non-hazardous waste, generally considered less harmful and subject to lighter regulatory controls.a
Since 2019, NOS's total waste generation fell by 5.51%, but rose by 7.61% in 2025, potentially reflecting a temporary surge in activity or inconsistency in waste control strategies.a
Over the same period, the share of hazardous waste decreased by 67.79%, yet rose by 116.83% in 2025, potentially signaling operational variability, temporary setbacks, or less effective hazardous waste mitigation in the short term.a
Overall, NOS had improved its waste performance over time, but a recent rise in both waste output and hazardousness may reflect operational volatility or a drift from previously effective strategies.a
In 2025, NOS reported that 21 metric tonnes of its total waste output were classified as hazardous. This represents 2.61% of its overall waste generation.a
The company treated this hazardous waste using a combination of methods.A majority (100%) was diverted from disposal through recovery-oriented treatments such as recycling or reuse. This suggests that NOS has established processes to reduce the environmental burden of its most harmful waste streams.a