Environment in Saint Helena 47 indicators covering environment for Saint Helena. IndicatorLatest Year10-yr change Rank Land use hidden — Other areas 250 Square kilometres 2022 unchanged 162nd Land use hidden — Total area 390 Square kilometres 2022 unchanged 174th Land use hidden — Cropland 40 Square kilometres 2022 unchanged 169th Land use hidden — Land area 390 Square kilometres 2022 unchanged 173rd Land use hidden — Permanent meadows and pastures 80 Square kilometres 2022 unchanged 147th Land use hidden — Naturally regenerating forest 20 Square kilometres 2022 unchanged 167th Land use hidden — Planted Forest 0 Square kilometres 2022 — 155th Land use hidden — Forest 20 Square kilometres 2022 unchanged 179th Exposure to outdoor air pollution 4.1 µg/m³ 2024 up 13.9% 219th Exposure to air pollution from human sources 2.46 micrograms per cubic meter 2024 up 19.4% 218th Using improved drinking water sources vs. GDP per capita 99.3% 2024 down 0.0% 100th Share of population using at least a basic drinking water source 99.3% 2024 down 0.0% 80th People using at least a basic drinking water source 5,200 people 2024 down 4.2% 227th People not using improved drinking water sources 37.13 people 2024 up 2.5% 178th Share of population not using improved drinking water sources 0.7% 2024 up 7.0% 132nd Share of the population using improved water sources 99.3% 2024 down 0.0% 100th Land use 4,000 hectares 2023 unchanged 198th Drinking water service usage 98.4% 2024 up 13.5% 40th People not using safely managed drinking water sources 84.09 people 2024 down 88.4% 149th Share using safely managed drinking water 98.4% 2024 up 13.5% 40th River flooding exposure — Cropland share exposed to river flooding 0 Percentage of agricultural land area 2022 — 142nd Total official financial flows for water supply and sanitation, by recipient 160,000 millions of constant united states dollars 2017 down 36.0% 139th Total donations received for biodiversity conservation 1.24 million millions of constant united states dollars 2024 up 552.6% 121st Protected area coverage of marine key biodiversity areas 54.8% 2025 up 9.6% 75th Share of terrestrial Key Biodiversity Areas that are protected 42.2% 2025 up 9.6% 136th Protected area coverage of mountain key biodiversity areas 33.7% 2025 up 18.0% 124th Average proportion of Mountain Key Biodiversity Areas (KBAs) covered 33.7% 2025 up 18.0% 133rd Average proportion of Terrestrial Key Biodiversity Areas (KBAs) 42.2% 2025 up 9.6% 144th Average proportion of Marine Key Biodiversity Areas (KBAs) covered by 54.8% 2025 up 9.6% 80th Proportion of population using safely managed drinking water 98.4% 2024 up 13.5% 40th Proportion of population using basic drinking water services, by 99.3% 2024 down 0.0% 85th Proportion of population using basic sanitation services, by location 100.0% 2024 up 0.4% 1st People using improved drinking water sources 37.13 people 2024 up 2.5% 175th Drinking water services 0 people 2024 — 119th Total official development assistance (gross disbursement) for water 0.1599 2017 down 36.9% 151st Total official development assistance for biodiversity, by recipient 1.24 2024 up 551.1% 133rd Lakes and rivers seasonal water area 0.3961 2022 up 187.0% 233rd Reservoir minimum water area 0 2022 — 153rd Reservoir maximum water area 0 2022 — 153rd Lakes and rivers permanent water area 0.2 2022 — 232nd Land cover and land cover change — Grassland 84.91 Square kilometres 2022 down 2.2% 124th Lakes and rivers permanent water area change 372.4% 2022 up 472.4% 7th Lakes and rivers seasonal water area change 81.3% 2022 up 321.0% 85th Forest certified for sustainable use 0 thousands of hectares 2024 — 85th Forest area certified under an independently verified certification 0 2024 — 92nd Forest area as a proportion of total land area 5.2% 2025 unchanged 211th Forest area 2.02 2025 unchanged 227th