The document discusses the growing threat of a global fresh water shortage. It proposes solutions to reduce fresh water usage such as dual water supply systems, storm water filtration, drip irrigation in agriculture, and dual-flush toilets. The goals are to significantly decrease the percentage of total accessible fresh water used by humanity and prevent worsening water scarcity. Regions already experiencing shortages could receive more water. The solutions aim to make cities more self-sustainable and conserve fresh water for future generations.