Fiuggi
Fiuggi is a natural mineral water bottled in the Lazio region of central Italy, approximately 80 km south-east of Rome. The source is volcanic in origin; groundwater percolates through ancient volcanic terrain in the Ernici mountains before emerging at the Fonte Bonifacio and Fonte Anticolana springs. The town of Fiuggi has been a recognised spa destination since the medieval period.
Mineral composition
| mg/L | |
|---|---|
| Calcium | 21 |
| Magnesium | 7 |
| Sodium | 6 |
| Sulfate | 2 |
| Chloride | 7 |
| Bicarbonate | 98 |
Compositions can vary by season and source. Read our methodology.
Mineral character
Fiuggi is classified as an oligomineral water. Calcium is 21 mg/L, magnesium 7 mg/L, sodium 6 mg/L, sulphate 2 mg/L, chloride 7 mg/L, and bicarbonate 98 mg/L. Hardness is 81 mg/L as CaCO₃ and TDS is approximately 148 mg/L. The profile is characterised by low values across all ions, with bicarbonate as the dominant contributor. The volcanic provenance contributes trace humic and fulvic compounds not captured in the standard six-ion profile.
Documented use and context
Pope Boniface VIII is recorded as having used the Fiuggi spring for its attributed therapeutic properties in the late 13th century; the town’s thermal associations derive substantially from this period. A letter attributed to Michelangelo, dated around 1549, refers to travel to Fiuggi in connection with kidney stones, though the precise context of this document has been subject to scholarly discussion. Therapeutic attributions in classical Italian medical literature centre on the water’s low mineralisation and its historically claimed effects on renal lithiasis.
Use-case suitability
- CoffeeAppears in blends for Melbourne and Portland.
- TeaNot used in any current tea recipe. Hardness 81 mg/L is above the 37–59 mg/L range of these targets.
- BrewingNot used in any current brewing recipe, but hardness 81 mg/L sits within the 26–922 mg/L range typical for these targets.
- BakingNot used in any current baking recipe, but hardness 81 mg/L sits within the 46–390 mg/L range typical for these targets.
- AquariumUsed neat for Betta Splendens, Discus, and Planted Tank (CO2). Also appears in blends for African Cichlids, General Community Tropical, and Neocaridina Shrimp.
- HorticultureNot used in any current horticulture recipe. Hardness 81 mg/L is above the 12–54 mg/L range of these targets.
Used in these recipes
African Cichlids
Lake Malawi / Tanganyika
60% in blend
IT
Betta Splendens
Freshwater tropical
neat
IT
Discus
Amazon basin
neat
IT
General Community Tropical
Mixed freshwater
33% in blend
IT
Melbourne
Melbourne, AU
33% in blend
IT
Neocaridina Shrimp
Freshwater shrimp
26% in blend
IT
Planted Tank (CO2)
Freshwater planted
neat
IT
Portland
Portland, US
20% in blend
IT
Where to buy
IT
Esselunga, Conad, Coop IT, Carrefour IT, Lidl IT
€0.30-0.50 per litre
Available in Italian supermarkets including Esselunga, Conad, Coop IT, Carrefour IT, and Lidl IT. Limited availability outside Italy. As of March 2026.