The reduction in Colorado River water deliveries poses a significant challenge for Phoenix, which relies on the river for 40% of its drinking water. Residents and businesses may face higher water bills due to the temporary surcharge on excessive usage. The cuts could also strain the city's backup water supplies and increase reliance on conservation efforts. However, most customers are not expected to incur the surcharge if they stay within usage thresholds. The city’s proactive measures aim to mitigate risks and ensure water availability, but the situation underscores the importance of collective conservation efforts.