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Table 2 Classes of salinity and EC (1 dS/m = 1 mmhos/cm; adapted from NRCS Soil Survey Handbook)

From: Chemical indicators for pollution detection in terrestrial and aquatic ecosystems

EC (dS/m)StatusReference
0 < 2Non-salineWatson et al. (2000)
2 < 4Very slightly saline
4 < 8Slightly saline
8 < 16Moderately saline
> 16Strongly saline