Wet

Dry

SN

Description of Water Types

No

%

No

%

1

HCO₃ and Ca dominant, frequently indicates recharging waters in limestone, sandstone, and many other aquifers

10

50

0

0

2

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 exchanged is presumed

5

25

1

5

3

HCO₃ and Na are dominant, normally indicates ion exchanged water, although the generation of CO₂ at depth can produce HCO₃ where Na is dominant under certain circumstances

1

5

3

15

5

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

1

5

5

25

6

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

1

5

11

55

7

Cl and Na dominant are frequently encountered or the water may have resulted from reverse ion exchange of Na-Cl waters

2

10

0

0