Common Symbols Used in Water Treatment

CATIONS	ANIONS
Calcium, Ca^++	Nitrate, NO3^-
Magnesium, Mg^++	Chloride, Cl^-
Iron, Fe^++	Sulfate, SO4^-
Manganese, Mn^++	Bicarbonate, HCO3^-
Sodium, Na^+	Calcium Carbonate, CaCO3^-
Copper, Cu^++	Hydroxide, OH^-
Hydrogen Sulfide, H2S
Carbon Dioxide, CO2
Oxygen, O2