Spatial and Temporal Variations of Water Quality of Mateur Aquifer (Northeastern Tunisia): Suitability for Irrigation and Drinking Purposes

Table 2

Statistical summary of hydrochemical parameters of the study area.

	Unit	Wet season (May)			Dry season (October)
		Min	Max	SD	Min	Max	SD
Cl^−	mg/L	67.45	2406.90	524.66	106.50	4402.00	844.89
SO4^−−	mg/L	223.53	2483.48	497.45	221.89	3591.36	583.38
HCO3^−	mg/L	54.92	622.40	150.35	86.65	693.19	146.93
Ca^++	mg/L	20.00	480.00	82.33	10.00	763.40	135.97
Na^+	mg/L	49.00	1728.00	376.45	11.25	170.13	40.30
Mg^++	mg/L	12.70	140.00	27.33	39.33	2576.00	491.23
K^+	mg/L	0.78	101.60	17.84	0.00	169.00	29.88
T	°C	16.20	26.80	2.16	18.20	26.70	1.98
Conductivity	mS/cm	0.54	8.64	1.94	0.72	14.59	2.98
Salinity	g/L	0.41	6.55	1.47	0.54	11.07	2.26
pH		6.18	8.39	0.39	7.13	9.08	0.33
O2	mg/L	1.20	7.60	1.36	0.60	5.20	1.09
NO^−3	mg/L	0	273.15	79.76	0.72	278.6	64.99
NH4^+	mg/L	0	6.63	1.08	0	0.2	0.03
NO2^−	mg/L	0	1.56	0.37	0	0.23	0.06
HPO4^−−	µg/L	10	6.37	1.02	20	4.82	0.82

Standard deviation.