Element | Max µg/L | No. of wells | %No. of wells | Valley names and Well code | Relationship to standards |
Cr | 32 | 3 | 1.8 | Zaher and Shemeisi(SM3, SM7, SM8) | Within standards |
Co | 5.7 | 1 | 1 | WadiNoman, (A2) | Not mentioned in standards |
Cu | 4.8 | 2 | 1.2 | Kakia and Sabahani(S3, S4, S5, S6, S7) | Within standards |
As | 50 | 2 | 1.2 | Zaher and Shemeisi(SM3, SM8) | Exceeds SASO, WHO, and EU standards |
Se | 42 | 2 | 1.2 | WadiNoman(A1, A2) | Exceeds WHO and EU standards |
Cd | 0.31 | 3 | 1.8 | Zaher and Shemeisi(SM5, SM9, L2) | Within standards |
Ba | 44 | 1 | 1 | WadiNoman, (A2) | Within standards |
Hg | 1.2 | 1 | 1 | WadiNoman, (A17) | Exceeds all standards |
Pb | 0.98 | 1 | 1 | Ryan, WadiAlkheif, (F2) | Within standards |