Resistivity [Ohm/m] | Label | TDS [mg/l] |
>3 | Fresh | 1000 - 2000 mg/l TDS, |
3 to 2 | Brackish | 2000 - 10000 mg/l TDS, |
<2 | Saline | >10000 mg/l TDS, |
<1 | Brines | Dead Sea saltwater intrusion. |