Natural Water Stability

Definition

The tendency of rivers, lakes, and groundwater to settle into a consistent pH range because the carbonate system buffers ordinary disturbances.

Carbon dioxide enters from the atmosphere while bicarbonate and carbonate enter from dissolved rocks, and the two sources converge into a natural buffering system that usually holds pH around 6 to 8. Bicarbonate in the middle of the system softens both acid and base disturbances before they become dramatic pH swings. This is why most natural waters are not chemically fragile.

Related concepts

Carbonate Equilibrium · Carbonate Mineral Weathering · Buffering (Bicarbonate Buffer)

---

Part of The Blueprint of Water · 🧪 chemistry