From: Pollution evaluation, sources and risk assessment of heavy metals in hand-dug wells from Ejisu-Juaben Municipality, Ghana
Heavy metals
Oral RfD (mg/kg/day)
Cd
5.0 × 10−4
Cu
4.0 × 10−2
Pb
3.5 × 10−3
Zn
0.3
Fe
0.7
Mn
0.014