Na/(Na + Cl) | Conclusion | Number of samples |
<0.5, TDS > 500 | Reverse Softening, seawater | 7 |
<0.5, 50 < TDS < 500 | Analysis Error | 0 |
<0.5, TDS < 50 | Rainwater | 0 |
>0.5 | Sodium source other than halite-albite, ion exchange | 0 |
0.5 | Halite solution | 10 |