W.H.O. SUGGESTED SPECIFICATION FOR DOMESTIC WATER

1. pH Value : 6.5 - 8.5
2. Turbidity (NTU) : Max 5
3. Dissolved Solids (mg/l) : Max 100
4. Suspended Solids (mg/l) : Nil
5. Nitrate Nitrogen (as N) (mg/l) : Max 10
6. Nitrite Nitrogen (as N) (mg/l) : Nil
7. Hardness (as CaCO3) (mg/l) : Max 500
8. Arsenic (as As) (mg/l) : Max 0.05

Source : Consolidated Laboratory (M) Sdn. Bhd.