The Groundwater Geochemistry and the Human Health Risk Assessment of Drinking Water in an Area with a High Prevalence of Chronic Kidney Disease of Unknown Etiology (CKDu), Sri Lanka

Table 2

Status of water quality based on [83].

		Status	Grade
1	0–25	Excellent	A
2	26–50	Good	B
3	51–75	Poor	C
4	76–100	Very poor	D
5	100 and above	Unsuitable for drinking	E