Water Salinity

Reference data and engineering information about water salinity for miscellaneous applications.

watersalinity

Overview

Engineering reference data for Water Salinity in miscellaneous.

$y = x \cdot k$

Multiply by conversion factor.

$y = y_1 + \frac{(x - x_1)(y_2 - y_1)}{x_2 - x_1}$

Estimate between two known points.

$p = \frac{\text{part}}{\text{whole}} \times 100\%$

Part as fraction of whole.

The following table shows the typical composition of salts dissolved in sea water.

10 rows

Source: engineeringtoolbox.com

Water is classified by its dissolved salt concentration (salinity), typically measured in parts per million (ppm) or milligrams per liter (mg/L).

Water Type	Salinity (ppm or mg/L)
Fresh water (typical US city water)	< 100
Water supply typically restricted to	500
Fresh water - US drinking water limit	1,000
Typical limit for agriculture irrigation	2,000
Brackish water, mildly	1,000 - 5,000
Brackish water, moderately	5,000 - 15,000
Brackish water, heavily	15,000 - 35,000
Seawater	30,000 - 50,000 (≈35,000)
Brine	> 50,000
Dead Sea	330,000