Water Types

Wet Season

No

%

No dominant anion or cation indicates water exhibiting simple dissolution or mixing.

4

40

SO₄ dominant or anion discriminate and Na dominant; is water type not frequently encountered and indicates probable mixing or uncommon dissolution influences.

3

30

This water type is dominated by Ca and HCO₃ ions. Association with dolomite is presumed if Mg is significant. However, those samples in which Na is significant, an important ion exchange is presumed.

1

10

SO₄ dominates, or anion discriminant and Ca dominant, Ca and SO₄ dominant, frequently indicates recharge water in lava and gypsiferous deposits, otherwise mixed water or water exhibiting simple dissolution may be indicated.

1

10

Cl and Na dominant indicate end-point down gradient waters through dissolution.

1

10