This letter written in 2070 describes a dire future with severe water shortages. The writer recalls abundant water in their childhood but warns that nobody listened to conservation messages. Now, water is scarce and pollution is widespread. The population suffers from dehydration, poor health, and early aging. The writer feels guilty for being part of the generation that contributed to environmental destruction and failed to heed warnings, condemning future generations to pay a high price. They believe life on Earth will soon be impossible due to irreversible damage.