The activated water with low salt content and small water molecule cluster is compounded with pure water with resistivity higher than 0.5 magaohm.cm. It contains Ca2+ in 0.1-0.2 mg/l, Na+ in 0.2-0.3 mg/l, Li+ in 4-6 mcg/l, Sr2+ in 8-9 mcg/l, Zn2+ in 18-20 mcg/l, metasilicic acid in 60-80 mcg/l, Mg2+ in 0.2-0.25 mg/l, Fe2+ in 0.04-0.05 mg/l, K+ in 100-150 mcg/l, total cation of 0.6-1.0 mg/l. It has 17O-NMR peak width at half height in 51-60 Hz stably. The drinking water is safe and healthful.