Element

Min µg/L

No. of wells

%No. of wells

Location

Cr

0.44

2

1.2

Rayan, R10, R11

Co

0.0036

2

1.2

Rayan, R8, R11

Cu

0.280

3

1.8

Rayan, R8, R10, R11

As

0.14

1

0.6

Tondobawi, T6

Se

0.350

1

0.6

Rayan, R11

Cd

0.00

35

21

In most wells

Ba

0.08

1

0.6

Raya, R11

Hg

0.00

70

42

In most wells

Pb

0.00

31

19

In most wells