No, rainwater is not 100% pure. While it is considered one of the purest forms of water due to the evaporation process that leaves behind impurities, it can still contain various contaminants. These contaminants can include:
- Dissolved gases: Rainwater absorbs carbon dioxide from the atmosphere, resulting in a slightly acidic pH.
- Atmospheric particles: Rainwater carries down dust, pollen, and other airborne particles, which can be harmful to human health.
- Industrial pollutants: Factories and other industrial facilities can release pollutants into the atmosphere, which can be absorbed by rainwater.
- Agricultural runoff: Fertilizers and pesticides used in agriculture can be washed into waterways and eventually end up in rainwater.
Therefore, even though rainwater is largely free from the minerals and salts found in tap water, it is not entirely free of contaminants.
