Assessment of groundwater quality, toxicity and health risk in an industrial area using multivariate statistical methods

Environmental Systems Research

Table 7 Chronic daily intake (CDI) and hazard quotient (HQ) indices for major cations and anions

Parameters	Statistics	Groundwater (CDI)		Groundwater (HQ)
Parameters	Statistics	Summer	Winter	Summer	Winter
Ca²⁺	Min	2.44	0.11	0.06	0.003
	Max	68.9	2.19	1.66	0.053
	Mean	17.95	0.78	0.43	0.019
	SD	11.45	0.43	0.28	0.010
Mg²⁺	Min	0.06	0.005	0.01	0.000
	Max	7.94	0.585	0.72	0.053
	Mean	1.52	0.116	0.14	0.011
	SD	1.81	0.134	0.16	0.012
K⁺	Min	0.02	0.001	0.02	0.001
	Max	0.57	0.006	0.57	0.006
	Mean	0.13	0.003	0.13	0.003
	SD	0.09	0.001	0.09	0.001
Na⁺	Min	0.86	0.033	0.001	0.050
	Max	28.1	0.680	0.043	1.047
	Mean	9.43	0.254	0.015	0.390
	SD	6.83	0.155	0.010	0.239
Cl⁻	Min	0.32	0.009	0.00	0.14
	Max	32.8	0.702	0.49	10.4
	Mean	7.11	0.155	0.11	2.32
	SD	5.34	0.108	0.05	1.61
F⁻	Min	0.00	0.00	0.05	0.002
	Max	0.03	0.034	0.57	0.561
	Mean	0.01	0.001	0.21	0.018
	SD	0.01	0.004	0.13	0.071
NO₃⁻	Min	0.17	0.002	0.10	0.001
	Max	6.17	0.052	3.85	0.033
	Mean	1.14	0.014	0.71	0.009
	SD	1.18	0.012	0.73	0.008
CO₃²⁻	Min	0.89	0.024	0.025	0.001
	Max	8.92	0.249	0.248	0.007
	Mean	4.00	0.113	0.111	0.003
	SD	1.78	0.048	0.045	0.001
HCO₃²⁻	Min	0.86	0.014	0.024	0.000
	Max	21.2	0.348	0.590	0.010
	Mean	7.92	0.102	0.220	0.003
	SD	5.05	0.056	0.140	0.002
SO₄²⁻	Min	0.26	0.004	0.007	0.000
	Max	13.7	0.177	0.380	0.005
	Mean	2.67	0.048	0.074	0.001
	SD	2.23	0.035	0.061	0.001