Marzia has a high minerality of 1372 mg/L — far above the typical 250–800 mg/L found in other mineral waters. Its pH of 6.7 gives it neutral-acidic properties. Scientifically classified as a bicarbonate-sulphate-calcium-magnesium water, it carries therapeutic properties backed by medical research. Uniquely, it emerges from the source as still (non-sparkling) water — rare for water of this minerality.