Assessment of a Physicochemical Indexing Method for Evaluation of Tropical River Water Quality

Table 2

Values of parameters after normalization for (Pesce and Wunderlin, 2000).

Class	Normalization factor (Ci)
	I		II		III		IV		V
	100	90	80	70	60	50	40	30	20	10	0
Cond (μS/cm)	<750	<1000	<1250	<1500	<2000	<2500	<3000	<5000	<8000	≤12,000	>12,000
DO (mg/L)	≥7.5	>7.0	>6.5	>6.0	>5.0	>4.0	>3.5	>3.0	>2.0	≥1.0	<1.0
Turb (NTU)	<5	<10	<15	<20	<25	<30	<40	<60	<80	≤100	>100