In 2025, Toho Gas 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 | 30,086a | 39,118a | 34,078a | |
Total Waste Recovered | 26,255a | 35,207a | 30,481a | |
Total Hazardous Waste Generated | 20a | 59a | 126a | |
Non-Hazardous Waste Disposed | N/A | N/A | N/A |
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In 2025, Toho Gas generated a total of 30,086metric tonnes of waste.a
Of this amount, 87.27% of Toho Gas's total waste generated was recovered through methods such as recycling, reuse, or composting, while 12.73% was disposed of through landfilling, incineration, or combustion.a
In 2025, Toho Gas reported a total waste generation of 30,086 metric tonnes, of which 87.27% was recovered through recycling, reuse, or composting.This high recovery rate suggests that Toho Gas has implemented strong circular economy practices and actively prioritizes sustainable waste management.a
Since 2021, Toho Gas's total waste generation decreased by 25.97%, including a further 23.09% drop in 2025, highlighting a consistent and deliberate reduction in waste production over time.a
Over the same period, Toho Gas's waste recovery rate declined by 1.09%, with a further 3.04% drop in 2025, underscoring a weakening in waste diversion performance and a potential drift away from circular waste strategies.a
Overall, while Toho Gas has successfully reduced its total waste generation, its waste recovery efforts have also declined. This pattern could suggest a shift in strategy away from circular treatment methods or a lag in recovery infrastructure development.