Inferred Industrial and Agricultural Activities Impact on Groundwater Quality of Skhira Coastal Phreatic Aquifer in Southeast of Tunisia (Mediterranean Region)

Table 3

Saturation indices (SI) of CaCO₃, CaSO₄·2H₂O, and CaF₂ in the Skhira phreatic aquifer.

Samples	SK1	SK2	SK3	SK4	SK5	SK6	SK7	SK8	SK9	SK10	SK11	SK12	SK13	SK14	SK15	SK16	SK17	SK18	SK19	SK20
Is calcite	-0.38	-0.37	-0.28	-0.19	-0.26	-0.31	-0.2	-0.38	-0.16	-0.14	-0.17	-0.13	-0.13	-0.16	-0.17	-0.01	-0.09	0.14	0.03	0.05
Is gypsum	-0.6	-0.58	-0.52	-0.42	-0.49	-0.43	-0.41	-0.44	-0.32	-0.24	-0.2	-0.2	-0.15	-0.2	-0.4	-0.23	0	0.17	-0.02	0.1
Is fluoride	-0.85	-3.24	-2.98	-3.17	-3.46	-3.42	-2.85	-3.18	-3.21	-2.88	-2.77	-3.41	-2.89	-0.58	0.43	0.26	-0.07	1.2	0.78	0.42