Correlation, Regression Analysis, and Spatial Distribution Mapping of WQI for an Urban Lake in Noyyal River Basin in the Textile Capital of India

Table 1

Weighted arithmetic and CCME WQI.

Weighted arithmetic WQI		CCME WQI
WQI value	Water quality rating	WQI value	Water quality rating
0–25	Excellent	0–44	Poor
26–50	Good	45–59	Marginal
51–75	Poor	60–79	Fair
76–100	Very Poor	80–94	Good
Above 100	Unsuitable for drinking purposes	95–100	Excellent