When using a CPAP machine, individuals may experience a drying sensation due to the continuous airflow it generates. Many CPAP users have reported discomfort such as nasal and throat irritation, nosebleeds, sinus congestion, and dry mouth. However, incorporating a CPAP humidifier into the setup can significantly alleviate these issues.

By introducing moisture to the pressurized air, a CPAP humidifier enhances the humidity level, making the experience of using a CPAP machine more comfortable. If you frequently wake up with dry breathing passages, it might be beneficial to consider integrating a humidifier into your CPAP system. Furthermore, it is crucial to maintain the cleanliness of your CPAP machine, including the mask and other device components, on a regular basis.
When it comes to selecting water for your CPAP humidifier, it’s important to avoid using tap water despite its accessibility. Tap water often contains mineral deposits and chemicals that could potentially harm your CPAP machine or contribute to the growth of harmful bacteria. Instead, consider the following categories of bottled water options:
Purified Water: Purified water undergoes filtration to remove chemicals and impurities, although it may still contain some mineral content. It is commonly sourced from municipal tap water and may utilize reverse osmosis for purification. Some brands may also add back healthy minerals after filtration.
Spring Water: Spring water is sourced from underground aquifers and naturally filtered as it flows to an above-ground spring. It typically retains a higher mineral content due to its natural filtration process. Artesian water is similar but is sourced from an artesian well tapping into an aquifer.
Mineral Water: To be labeled as mineral water in the U.S., it must come from an underground water source and contain a minimum amount of total dissolved solids (minerals). Mineral water is known for its naturally occurring mineral content.
Distilled Water: Considered the purest form of bottled water, distilled water is produced by boiling water and then condensing the vapor back into liquid form. This process removes virtually all impurities and minerals.

When using water for your CPAP humidifier, distilled water remains the recommended option due to its purity. However, if distilled water is not readily available, purified water (such as those produced through reverse osmosis) can be used as an alternative. It’s important to check the manufacturer’s guidelines for your specific CPAP machine to determine the recommended water type and any additional requirements for optimal performance and hygiene.
Disclaimer: This blog post provides a general overview of medical conditions and potential treatments. It is not intended as medical advice. For personalized medical guidance, please consult your healthcare professional.