Effect of Industrial Effluent on Irrigation Water Quality of Choba River in the Niger Delta Region of Nigeria

Table 7.

Degree of toxicity of Choba river water samples at various sections

Parameters	Units	PI values along the sections of CHOBA RIVER
Parameters	Units	A	B	C	D	E
Electrical Conductivity (EC)	µS/cm	0.31	0.17	0.72	2.01	0.23
SAR	-	0.04	0.05	0.05	0.05	0.05
PI	%	0.39	0.47	0.35	0.31	0.56
TPHC	mg/l	0	1.45	17.43	8.04	3.90
Pb	mg/l	0.05	0.07	0.07	0.04	0.02
Fe	mg/l	0.04	0.04	0.07	0.04	0.04
Sum	-	0.83	2.25	18.69	10.49	4.80
CPI	-	0.14	0.38	3.12	1.75	0.80

PI=EHQ; PI is the single factor evaluation index