Table 2 Physical parameters of the analyzed groundwater samples.

From: Spatial variations and health risk assessment of heavy metal levels in groundwater of Qatar

Physical parameter

Min

Max

Average

WHO standards

Kahramaa standards

pH

6.03 ± 0.235

7.92 ± 0.22

7.4 ± 0.48

6.5–8

6.5–8

EC (µS/cm)

1082 ± 51

45,300 ± 259

7885.4 ± 6641.7

500

150–500

TDS (mg/L)

703.3 ± 146

31,710 ± 715

5454 ± 4664

100

110–250