Which of these is NOT a significant challenge to the Greater Phoenix water supply?

Technological advancement is not typically considered a significant challenge to the Greater Phoenix water supply. In fact, advancements in technology often provide solutions to water resource management, conservation, and efficiency. Innovations in irrigation techniques, water recycling, and desalination have the potential to enhance water supply and mitigate challenges associated with over-drafting, climate change, and population growth.

In contrast, over-drafting refers to the excessive withdrawal of groundwater, which can lead to negative consequences such as reduced aquifer levels and land subsidence. Climate change poses risks such as altered precipitation patterns and increased evaporation rates, fundamentally impacting water availability. Population growth puts additional stress on existing water resources as demand for water rises with an expanding population. These issues represent significant challenges to ensuring a sustainable water supply for the Greater Phoenix area.