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

Figure 10

Relationships between SO₄^2- and NO₃^- contents in HAV water samples. The water samples with NO₃^- values lower than detection limit (1.9 mg/l) are not reported. P5 and P7 water samples have higher NO₃^- values. The NO₃^- geogenic level (equal to 4 mg/l) has been drawn. The symbols are as Figure 5.