Environment in China, Hong Kong Special Administrative Region 36 indicators covering environment for China, Hong Kong Special Administrative Region. IndicatorLatest Year10-yr change Rank Average proportion of Freshwater Key Biodiversity Areas (KBAs) 16.6% 2025 unchanged 8th Average proportion of Mountain Key Biodiversity Areas (KBAs) covered 57.0% 2025 unchanged 2nd Average proportion of Terrestrial Key Biodiversity Areas (KBAs) 48.9% 2025 unchanged 2nd Average proportion of Marine Key Biodiversity Areas (KBAs) covered by 32.5% 2025 unchanged 6th Proportion of population using safely managed drinking water 100.0% 2024 up 0.4% 1st Proportion of population using safely managed sanitation services, by 94.8% 2024 up 22.1% 5th Proportion of population using basic drinking water services, by 100.0% 2024 up 0.3% 1st Proportion of population using basic sanitation services, by location 94.8% 2024 down 1.3% 8th Reservoir maximum water area 0 kmsq 2022 — 12th Lakes and rivers permanent water area 18.12 kmsq 2022 down 8.0% 12th Lakes and rivers seasonal water area 1.9% 2022 up 41.9% 2nd Lakes and rivers permanent water area 1.6% 2022 down 8.0% 9th Lakes and rivers seasonal water area 20.88 kmsq 2022 up 41.9% 12th Reservoir minimum water area 0.0% 2022 — 12th Reservoir minimum water area 0 kmsq 2022 — 12th Reservoir maximum water area 0.0% 2022 — 12th Forest area certified under an independently verified certification 0 ha th 2024 — 12th Lakes and rivers permanent water area change -0.9% 2022 down 111.6% 12th Lakes and rivers seasonal water area change 49.6% 2022 up 811.2% 7th Beach litter originating from national land-based sources that ends 5,219 tonnes 2021 — 9th Beach litter originating from national land-based sources that ends 17.5% 2021 — 11th Municipal waste collected 5.94 million tonnes 2023 up 8.2% 1st Municipal waste recycled 1.97 million tonnes 2023 down 2.0% 2nd Hazardous waste generated, per capita 26.81 kg 2023 up 20.6% 3rd Hazardous waste generated 27,765 tonnes 2023 down 15.1% 2nd Hazardous waste exported 5,398 tonnes 2023 up 181.7% 1st Electronic waste collected 67,000 tonnes 2023 down 4.3% 11th Electronic waste collected, per capita 9 kg 2023 down 5.9% 5th Proportion of municipal waste recycled 28.9% 2019 down 41.4% 1st Electronic waste recycled 67,000 tonnes 2023 down 4.3% 10th Electronic waste recycled, per capita 9 kg 2023 down 5.9% 4th Hazardous waste treated or disposed 22,367 tonnes 2023 down 27.3% 1st Hazardous waste imported 0 tonnes 2023 down 100.0% 1st Total waste generation, by activity 22.74 million tonnes 2023 down 24.2% 1st Hazardous waste treated, by type of treatment 3,939 tonnes 2023 down 38.2% 1st Proportion of hazardous waste treated or disposed 80.6% 2023 down 14.4% 2nd