Modelling of Water Quality: An Application to a Water Treatment Process

Table 3

Variables selected for turbidity using multiple linear regression.

Round	Variables	Correlation coefficient (C)
1	Aluminium dose	0.55
2	Intake from the pikkala reservoir	0.62
3	Turbidity of raw water	0.66
4	Proportion of Lake Humaljärvi/Pikkala reservoir water intake	0.70
5	Colour of raw water	0.71
6	KMnO4 of raw water	0.71
7	Flocculation pH	0.71
8	Water temperature	0.71
9	Aluminium dose/raw water KMnO4	0.71
10	Silicates in raw water	0.71