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Beni-Suef University Journal of Basic and Applied Sciences

Table 6 Classification of groundwater based on Na% (Wilcox [82])

From: Geochemistry and assessment of groundwater resource in coastal arid region aquifer (Dahab delta, South Sinai, Egypt)

Water quality

Sodium (%)

Excellent

< 20

Good

20–40

Permissible

40–60

Doubtful

60–80

Unsuitable

> 80

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