The data on global water usage from 1900 to 2000 illustrates significant trends across various sectors, emphasizing the growing demand for water resources. The table analysis examines these trends alongside a comparative study of water consumption patterns between Brazil and the Democratic Republic of Congo.
The graph reveals that agricultural water consumption is the predominant sector, escalating from approximately 500 km³ in 1900 to around 3000 km³ by 2000. In contrast, industrial and domestic water use remained minimal until mid-century. From 1950 onwards, industrial water consumption rose sharply, reaching nearly 1000 km³, though still lagging behind agricultural usage.
While comparing Brazil and the Democratic Republic of Congo, some disparities are observed. Brazil has an extensive area of irrigated land totaling 26,500 km², leading to substantial agricultural water use and an average 359 m³ of water consumption. Conversely, the Democratic Republic of Congo, with only 100 km² of irrigated land, has a mere of 8 m³ water usage.