Drink only water: no coffee, tea, milk, soda, juice, or adult beverages. Think about the people throughout the world who have limited access to potable water. Pray for them. Journal about what you missed most. Look at your daily water usage—where are you wasting water? Do you take clean water for granted? Pray to be a better water steward.
Go deeper: Read about one man’s month-long water-only experience. How did your experience compare? https://chrisbailey.com/experiment-top-10-things-learned...
Read about water scarcity: https://www.unicef.org/wash/water-scarcity
Commit to conserving water and/or supporting water missions.