Which of the following is NOT a rule of water discipline?

The correct choice highlights a key principle of water discipline, which is to use water responsibly and judiciously. The rule against using water for any purpose underscores the importance of conservation and prioritizing its use for essential functions such as drinking, cooking, sanitation, and hygiene.

Using water indiscriminately can lead to depletion of water resources and can potentially compromise water quality. Practices that waste water or divert it to non-essential uses can have negative impacts on both human health and the environment. Therefore, recognizing that water has precious and limited availability is crucial in any field sanitation strategy.

The other options refer to guidelines that emphasize proper water management, which includes sourcing water only from approved locations, practicing water conservation techniques, and protecting water sources to ensure they remain safe and usable. These practices collectively support sustainable water use in various settings, especially in situations where water scarcity is a concern.