Can acid waters always be traced to the presence of carbon dioxide?

Acid waters are typically associated with a variety of factors, and while the presence of carbon dioxide can contribute to acidity through the formation of carbonic acid, it is not the sole cause. Acid waters can result from other sources, such as the presence of sulfuric acid or organic acids, especially in certain geological or environmental contexts. For instance, acid mine drainage, which originates from the oxidation of sulfide minerals, can lead to high acidity levels independent of carbon dioxide. Additionally, runoff from agricultural areas can introduce various acids into water systems.

Thus, while carbon dioxide is a common factor in many cases of acid water, it is one of several possible contributors, making it clear that acid waters cannot always be traced solely to carbon dioxide. This understanding is important for recognizing the complexity of water chemistry and the various influences that can affect pH levels in aquatic systems.