| Country | Wales |
| Source | Brecon Beacons National Park |
| Type | Still |
| pH | 7.8 |
| Calcium (Ca) | 47.5 |
| Chloride (Cl−) | 9.0 |
| Bicarbonate (HCO3) | 206 |
| Magnesium (Mg) | 16.5 |
| Nitrate (NO3) | 3.5 |
| Potassium (K) | 0.4 |
| Silica (SiO2) | 5.1 |
| Sodium (Na) | 5.7 |
| Sulfates (SO) | 9.0 |
| TDS | 198 |
| milligrams per liter (mg/l) | |
Brecon Carreg is a brand of Welsh mineral water distributed across the United Kingdom. The water is sourced from the Brecon Beacons National Park. Brecon Beacons Natural Waters (its previous owner) started in 1978 as a cottage industry, in converted barns on Lwyndewi Farm. In 1983 the Spadel Group acquired the company and started expanding the business into a major commercial operation.