Table 2 A classification of drinking water according to the Water Quality Index ranges6,39,40,41.

From: Integrated groundwater quality assessment using geochemical modelling and machine learning approach in Northern India

WQI Range

Water quality (Type)

> 100

Unfit

76–100

Very poor

51–75

Moderately poor

26–50

Good

0–25

Excellent

Back to article page