Agriculture (suitable for crops that prefer slightly acidic conditions). Beverage and food processing (helps control flavor and preservation). Environmental studies (monitoring natural water bodies like rain and streams). Some industrial processes where mild acidity is required.

Helps dissolve and transport nutrients in soil. Maintains conditions for organisms that prefer slightly acidic environments. Aids certain chemical reactions and processing steps. Useful for studying acid-base balance in natural systems.

Mildly acidic. Common in rainwater or water containing dissolved CO2 (forming weak carbonic acid). Still close to neutral not strongly acidic.