Yes. In Jainism, hinsha (violence/harm) includes harm to all living beings, even microorganisms. Boiling water kills microscopic life, so it is technically a form of hinsha.

Key points to keep in mind:

• Intent matters. If boiling is needed for safety or to prepare food, many Jains accept it as a pragmatic, necessary action while trying to minimize harm in other ways.
• Both Digambara and Śvetāmbara traditions recognize that microorganisms are living beings, so they generally view boiling as involving harm, though practical necessity in daily life is acknowledged.
• To minimize harm, some people prefer using water that has been boiled only as much as needed, or using methods that reduce exposure to living beings, while still meeting their needs.

If you’d like, I can share the precise Jain sources or stotras that discuss ahimsa and subtle life in water.