Hydrogeochemistry and Groundwater Quality Assessment in the High Agri Valley (Southern Italy)

Table 4

Drinking water quality standard of WHO [60] and Italian legislation (D. Lgs. 31/2001, [58]).

Parameter/element	WHO (2004)		D. Lgs. 31/2001
	Desirable limit (DL)	Maximum permissible limit (MPL)	Maximum admissible concentrations (MAC)
pH	7-8.5	9	-
EC (μS/cm)	500	1500	-
TDS (mg/l)	500	1500	-
Cl^- (mg/l)	200	600	250
SO4^2- (mg/l)	200	400	250
HCO3^- (mg/l)	-	240	-
NO3^- (mg/l)	-	50	50
NO2^- (mg/l)	-	3	0.5
Ca^2+ (mg/l)	75	200	-
Mg^2+ (mg/l)	50	150	-
Na^+ (mg/l)	-	200	200
K^+ (mg/l)	-	12.0	-
Cu (mg/l)	-	1.0	1.0
Ba (mg/l)	-	2.0	-
B (mg/l)	-	0.5	1.0
Sr (mg/l)	-	0.5	-
V (mg/l)	-	-	0.05

-: no data.