Table 1.

Physico-chemical parameters of samples.

Sample	Physical parameter			Metal concentration (ppm)
	Temp. (°C)	pH	TDS (ppm)	Total Cr
DW	21.3	7.52	11,800	2.0
ECW 1	21.3	7.76	37	0.30
ECW 2	21.2	7.78	118	0.40
ECW 3	21.3	7.93	574	0.30
CTLW	ND	ND	ND	17,765.0

ND= Not Determined.