Distilled water is a form of highly purified water, created through the process of distillation. This method involves boiling water and then collecting the condensed steam, effectively leaving behind impurities, minerals, and other dissolved solids. Boiling distilled water introduces specific changes to its properties.
The Boiling Process and Distilled Water
When distilled water is heated to its boiling point, it undergoes a physical transformation, converting from a liquid to a gas (steam). This process primarily affects dissolved gases that may have re-entered the water after its initial distillation. Gases like oxygen and carbon dioxide are less soluble in hot water, so boiling causes them to escape into the atmosphere.
The removal of these dissolved gases can alter the water’s taste, often described as “flat” or “bland.” Boiling distilled water does not reintroduce minerals or impurities. Furthermore, it does not provide additional purification for non-volatile contaminants, as the distillation process itself has already handled these.
Safety of Drinking Boiled Distilled Water
Drinking boiled distilled water is generally considered safe for consumption. Since the distillation process removes minerals, the water lacks the electrolytes typically found in tap or spring water, which can contribute to its distinct taste. The absence of these dissolved gases and minerals often gives boiled distilled water a noticeably “flat” taste profile.
While safe for occasional drinking, it is not typically recommended as a primary source for long-term hydration. This is because distilled water does not provide beneficial minerals like calcium, magnesium, and potassium, which are present in other water sources and are important for human health. Consuming it periodically will not cause harm.
Common Uses for Boiled Distilled Water
Boiling distilled water is beneficial in applications where purity is a concern. For medical devices, such as CPAP machines and nebulizers, using boiled distilled water helps prevent the buildup of mineral deposits and ensures the highest level of hygiene. The absence of minerals extends the lifespan of these devices and prevents the inhalation of impurities.
In household appliances like humidifiers and steam irons, boiled distilled water is preferred to avoid scaling and mineral residue. This prevents damage to the heating elements and ensures efficient operation.
In scientific laboratories, boiled distilled water is often used for experiments or to prepare sensitive solutions where any contaminants could skew results. Boiling can also provide an extra layer of sterilization for highly sensitive applications.