Treatment methods & devices

Boiling tap water for 1 minute (or 3 minutes if above 6,500 ft) can make it suitable for sinus rinse and CPAP. It's important to cool it down sufficiently before using it to avoid burning oneself. The CDC has more detailed guidelines on this and other treatment options: https://www.cdc.gov/naegleria/prevention/sinus-rinsing.html